I'd like to point out again, that speed DOES have something to do with stalls. Saying speed has nothing to do with stalls is like saying speed has nothing to do with car crashes. Yes, they happen whether the car is moving or not, but they do happen more often if you are speeding. If a plane was to stop moving in the sky what would happen....it would stall, and fall ergo speed must have something to do with it. I understand that you can stall the wing going any speed, BUT speed is the main reason
the plane was climbing, see the relative alt with the second one...
-Just back your Gravity Center of 2 meters (Skydivers moving to the tail and outiside.. )in a small airplaine it is enormous.
-You are way of CG limit enveloppe
-Congratulation your are in total unstability, Trim doesn't help any more. Any variation of AOA will increase to max, and over AOA but it didn't get that far in the video.
(Note to self - Do not stoop to an all-time low of engaging in this ridiculous and fundamental conversation about what causes an airplane wing to stall.)
@gowill2 Thank you for your scientific explanation of stall and spin. Please note that there are many variables involved for stall conditions of a wing. However, the reason for stall of a wing is the shortage of airflow over the wing, causing turbulence i.s.o. lift. Try it in a glider: very dramatic. The reasons for the lack of airflow can be numerous.
Looked to me like when the six people jumped off the aircraft, the immediate removal of between 900 - 1200 pounds of cargo caused the plane to climb. The pilot could have merely left the controls at the same position and the power at the same position and the plane would have gained altitude. However, it also appears he also pitched up to make sure nobody got caught on the airplane.
Ok, first off, Im not an expert(unlike everyone else on youtube). Second off, if all the skydivers are near the back of the plane, that can create a tail heavy situation, causing a stall similar to this. When the skydivers realized it and bailed, the situation could have self corrected. Not all stalls are dramatic occurences. Once again, just my non expert take.
The plane took off with peeps sitting nicely near the wing.
Now it's in thin high level air, slowed down (Flaps are lowered) and all surfaces produce only little force. Some ~500lbs of passengers now move far behind the centre of gravity, and adding to that, cast a wind shadow on the horizntal tail, which makes it lose a good bit of its lifting area. Thus there's no chance for keeping the nose down with the elevator. The tail probably stalled, yepp.
Stall: The point in which the critical angle of attack is reached. The critical angle of attack is specific to each aircraft, mostly based on the shape of its airfoil. When the critical angle of attack is reached (when the nose is pitched up beyond the critical angle of attack) the airfoil can no longer produce lift, as air is flowing under the wing at a much higher rate than it is over the top. IT HAS NOTHING TO DO WITH SPEED.
a stall is something when a plane goes to slow, then the wings can,t catch enough air to stay fling and yhe plane fals like a brick out of the sky and this plane is not falling out of the sky.
@blackninjamoh thats not true... stall has nothing to do with speed. it has everything to do with AoA and relative airflow over the wing. i can fly a plane mofricken slow so long as i dont exceed the maximum angle of attack... and you can also stall going max speed if you pull up and increase the load factor on the wings while also exceeding aoa... i've stalled going as slow as 40 knots.. and as fast as 80 knots... (which is fast for the planes i fly in! lol)
@gowill2 no, a stall has everything to do with speed, if you go to slow, the windflow over the wing isn't enough for the wings to create a vacuüm above the wing, thereby creating lift, wich results in what @blackninjamoh says, the plane falling out of the sky like a brick, and yes, you are correct, you can stall an airplane by increasing the AoA over it's limit, but you can also stall by going to slow. wich aircraft do you fly in?
@doudy009 my point i'm making is that your speed doesnt have anything to do with a stall.... cause it doesnt... i've flown under the "stall speed" of a plane. you just have be pitched up, it is all about relative airflow. you can stall at any speed. all that matters is the AoA is exceeded. too slow going straight and level you lose Relative airflow.. therefore exceeding the critical angle of attack. so my point stands.
You can stall at any groundspeed, but airspeed is measured by a pitot facing forward. It's getting the same speed reading as the air over your wings, so will show how close to stalling you are. (Assuming you're not a heli)
@adzer45 when i said you can stall at any airspeed, unless a plane has greater than 1:1 thrust to weight ratio, i could fly at 100 knots 200 knots 150 knots.... if i pitch up and exceed the critical aoa and change the relative airflow over the wing the plane is stalled.. that is what i meant by "stall at any speed"
With all due respect, how do you fly under the stall speed? If you have not stalled, then you are not under the stall speed, regardless of what the book says, right? I under stand AoA and stalling at any airspeed speed, any attitiude, but not completely sure I understand flying below the stall speed (unless you are refering to flying in ground effects)
The answer is you either can't - or your ASI is marked incorrectly. The stall speed is the IAS at which the aircraft will stall in level flight. So if your ASI is marked correctly, and you are flying straight and level, then you can't fly below the stall speed (be it S0 or S1 - it's still not possible beyond maybe 1 or 2 kts). If you hadn't stalled, and you were below eith S0 or S1 then you would be decreasing altitude.
@ssouthur a plane with zero IAS is not stalled. stew on that. a stall has everything to do with relative airflow. nothing to do with speed. the speeds they tell you are just from testing... but a stall itself has nothing to do with it. once again... a plane with zero IAS is not stalled. your obviously not stupid. so think about the theory of relativity and then apply it to the flow of air relative to the movement of the aircraft....i know exactly what you guys are all saying im just saying its
@gowill2 You've flown "under" stall speed? Not unless you had a powerplant capable of keeping you up in a post stall condition, and I'm going to guess you aren't flying a jet fighter, or a purpose built aerobatic plane. If you aren't flying something that has better than 1:1 thrust:weight ratio, then anything "under" stall speed you are falling out of the sky. You might call that flying. I call it falling.
@dunhillsupramk3 no i havnt... but if you have. i bet it was a pretty good rush, i have however had a near miss when i was in training. tell you what, i learned to scan a whooooole lot better and i probably broke the stick cause of the kung foo grip i had on it.
@gowill2 Your point is flawed. If your wing's critical alpha is 15 degrees, your stall speed is the speed when you are in level flight with 15 deg AOA. Exceed that and wings are stalled. If you pitch up, it will cause more flow seperation, and even more decrease in lift. Pitching up allows your engine thrust to counter drag and weight forces. Surely you will fly, but that doesnt change the fact the wings are in post stall condition.
@gowill2 It turns out that critical AOA for a specific plane in a determined configuration occurs always at a determined airspeed. I believe your statement that speed having nothing to do with stall is not correct.
@Arkthurius i am not saying that anyone here is wrong, i am saying there is a more correct answer. and the definition revolves around AoA aka, slowing down at straight and level actually increases your AoA. pilots classes as far as i know dont tell you that they just teach you a definiton and train you to recognize certain speeds in certain configurations. but its not based on a speed. its NOT BASED OFF A SPEED. thats what im saying. the speed does not determine a stall. slow OR fast.
@Arkthurius maybe i should just make a 1 min video and show what im trying to say. cause i know it would just be an aha moment for people as it was for me. and then you go "welll duuuuhhh of course that makes sense" its just you never thought about it that way.
@eclipse245 you ever heard of high alpha? its kind of like that (i hope my vocabulary is right) its where the wings are essentially turning into giant flaps because while your nose is facing upwards, you are still moving straight and horizontally and so your stall speeds are much lower.
@KibblyCheese But that's because the thrust of the engines exceeds the force of weight, hence the horizontal flight in a high alpha pass. That's the ONLY occasion that would happen.
@Sjoerd9314 a factor that determines the characteristics of a stall.. not the stall itself. if i could right up on a board and show you all what i mean, you would all go "aaaaaaaaaaaaahhhhh i see what he means" and you all would 100% understand what im saying. its just i cant do that.
@gowill2 i am a student pilot so i know what you mean but speed definitely is a factor! you can level off, and without speed you will stall... when you level off and slow down and maintain attitude, you will stall faster as you increase your angle of attack, which might reach the critical angle and then you also stall.
@m1leswilliams funny that im not even a pilot and ive read so many pilots on youtube saying shit about stalls.
you just need to understand the LIFT formula and everything makes sense. simple as L=(1/2) d v2 s CL
the 2 its a small one dont know how to put that on here. D = density of the air, V2 = speed , S= size of the wing (amount of air particles that attach to the wing depending on size), and CL = ANGLE OF ATTACK.
simple put, if you go fast but ur angle of attack sucks = Stall
@josebrid Cheers for that it makes a lot more sense. I'm going to keep winding people up though, because they are getting all high and mighty and deserve a slightly elevated blood pressure.
@llanbo I haven't read it, but I do know that it should not say maximum... it should say maneuvering. Since between maneuvering speed and never exceed speed, you will not stall the plane, you will do structural damage to the aircraft.... so whatever book that is... if that is a direct quote... is WRONG
You should read it, then you'd understand why YOU'RE wrong ;-)
Simply put: Exceed the critical angle of attack (at any speed) and your wing will stall, as many others have pointed out here. If you do so by making ham-fisted control movements above Va, you have a good chance of damaging the aircraft as you say, but there are ways of stalling that don't require you to do that..
It is clearly visible that few seconds before the launch the airpline climbs (just look to the plane on the left). With a stall the plane dives, doesn't stall!
@Tundraboy05 Stall: departure of aircraft from normal flight due to the airflow over one or both wings reducing so much that those wings can no longer produce lift. An aircraft does not have to be "in one place" for it to be stalled..
Recovery from a straight ahead stall is about as dificult as opening a soft drink can. Stalls are a non-event if you have the altitude. The basic premiss of a good landing is to stall the plane as the wheels touch the tarmac. As far as this vid is concerned I am not sure anybody stalled anything.
@hammerogod You're right! I can't see any stall, too. In addition to your comment there are 2 kinds of stall were recovery is in most cases impossible. The first is flat spin which means a loss of control of yaw rudder while aircraft spins and the second is deep stall. Deep stall means a stall of the elevator of an airplane with a T-tail.
@svennoair Aerobatic Training offers additional training on Stalls. I highly recommend extensive Stall Recovery training. Under all normal circumstances Stalls are to be avoided unless you are Patty Wagstaff and flying a 400 HP Pitts Special or something equally capable of powering out of exotic attitudes. Even Bob Hoover would have avoided any situation that was likely to put him in a Flat Spin.
The nose pitches up when the airspeed dropped due to the excessive drag caused by all the bodies hanging off the airframe. A stall doesn't mean a crash, just that the air flow over the wing has decreased sufficiently to cause a temporary loss of lift. It can be corrected by dropping the nose, or if sky divers drop off.
Look at the angle of attack with respect to the horizon, at 23 seconds the nose pitches up. that would indicate that the pilot was either an idiot trying to shake the sky divers lose, or he stalled.
@bmkay Can you name such an airplane? If the nose rises in a stall the center of pressure would have to be ahead of the center of gravity. That is normally a deadly situation and is why pilots perform a balance calculation in addition to verifying weight. The plane would be unstable in flight and would have low control effectiveness, in addition to having this poor stall characteristic.
@Iris421989 you must not know what a stall actually is.... it isnt always easy to tell from the outside looking in. the sudden up of the AoA could easily cause the plane to stall. and pilots train to recover from these pretty mofricken quick. if it was a stall or wasnt you and i wont ever know... but its pretty likely
@gowill2 you don't know anything about me, interesting that you're ready to claim i dont know what a stall is.
by the sound of it you're a pilot, so am i. your description of what a stall is very accurate, its pure AOA.
all i'm saying is that there isn't enough evidence in this video to claim that either of the planes are stalling. sure the plane that the cameraman is onboard climbs sharply but that doesnt mean it is stalled.
no u do not feel anything in your stomach.. well maybe pain if u have a hard opening but the stomach 'flop' that u get while riding on a roller coaster is produced by seeing things go past you fast or dropping fast.. however u drop at pretty much the same speed while skydiving and there is nothing to see up there bar clouds if your unlucky.
The plane simply does not stall. As the jumpers are all aft of the wing the plane's cg is thrown off and raises the nose becuase the tail becomes too heavy. Proof that there is no stall is that the plane climbs above the other plane in view. If the plane stalled it would lose altitude reguardless of the pitch. There is no stall recovery either. The camera looks up after the jump and the plane is in level flight. If it stalled it would be sinking nose up, or be nose down for a stall recovery.
yeh, people are dumb and don't watch the video, aren't a skydiver, aren't a pilot, or like to see their name in writing on a youtube page (Hi mom!) Just found out today we're getting a PAC 750 to jump for the summer. Woot!
BigAirJ: "The plane simply does not stall. As the jumpers are all aft of the wing the plane's cg is thrown off and raises the nose becuase the tail becomes too heavy."
This means an increase of the angle of attack and this could cause a stall. But to me it is not visible if they are stalling...
In fact, a training maneuver denoted the "accelerated stall" can demonstrate this. This is one of the reasons airplanes have "maneuvering airspeeds." It is the speed, below which, a wing would stall as opposed to break during an abrupt input. This means, no matter what your flight path, you can stall a wing (an airplane too!) by simply forcing it into a climb faster than the wing will maintain lift. This happens often in aircraft used for skydiving. Good guess.
This comment has received too many negative votesshow
yup you are... stall means when the aircraft is gaining altitude at a too high vertical speed, then the aircraft finally stalls and turns down, this takes some time though it has to decrease its speed first
This is incorrect, too. A stall occurs when the aircraft exceeds its critical angle of attack. This can occur at any airspeed and pitch attitude (e.g., if you pull out of a dive too rapidly and exceed the critical angle of attack, you will stall). An easier way to think of it, as mentioned in "Stick and Rudder," is that an aircraft stalls when the difference between where it is pointing and where it is actually going is too great (think of a skidding car). Hope this helped clear things up.
@SkyWayMan90 an airplane stalls when the airplane hits a certain airspeed as well. a cessna 152 will stall at under 20 MPH and i know this because practicing stalls i was up to about 18 degrees for my 1st airspeed hit about 24 and we stalled. then the second time we got to about 27 degrees hit about 20 MPH and stalled. it depends on airspeed ans pitch not just one or the other.
@N617A You are wrong. That airplane didn't stall because you were at 24 or 20 mph...it stalled because you exceeded the critical angle of attack. This can happen at ANY airspeed...20 in level flight, 130 in a vertical dive when you try to pull out...ANY speed. The reason they mark airspeeds on the ASI is because exceeding CAOA at a low airspeed is the most COMMON way of stalling. St
@tburns7v Actually your wrong, you can stall at any airspeed.
TheMeslava 21 hours ago
Was the second plane a GAF Nomad?
matube73 3 days ago
thats not a stall... LOL
people...
sirlaps 1 week ago
Add 800lbs to the tail of a plane and its gonna wanna go up and stall.
andgate2000 1 week ago
I probably shit my pants if this were to happen to me!
SlickSpencer8live 1 month ago
shit, forgot my parachute.
MrRuzo214 1 month ago
how HIGH is that?
SuperChadiX 1 month ago
another crazy para
ciuventus 2 months ago
I'd like to point out again, that speed DOES have something to do with stalls. Saying speed has nothing to do with stalls is like saying speed has nothing to do with car crashes. Yes, they happen whether the car is moving or not, but they do happen more often if you are speeding. If a plane was to stop moving in the sky what would happen....it would stall, and fall ergo speed must have something to do with it. I understand that you can stall the wing going any speed, BUT speed is the main reason
m1leswilliams 2 months ago
Stall ? What Stall ?
the plane was climbing, see the relative alt with the second one...
-Just back your Gravity Center of 2 meters (Skydivers moving to the tail and outiside.. )in a small airplaine it is enormous.
-You are way of CG limit enveloppe
-Congratulation your are in total unstability, Trim doesn't help any more. Any variation of AOA will increase to max, and over AOA but it didn't get that far in the video.
-Skydivers jump : back to normal.
pc6pilot 2 months ago
Amazing audio. Matches the video
ten8goa 2 months ago
rip to all the survivors
Maverick747uk 2 months ago
Has anyone mentioned Centre of gravity. Low speed, People climbing into the airflow.
Easy thng to do next time, Start pitching nos down to start of with, or get a bigger aeroplane.
Nice clip
bogit1966 3 months ago
Why did the plane gain altitude when it stalled, or are my eyes playing tricks on me?
emp29 3 months ago
(Note to self - Do not stoop to an all-time low of engaging in this ridiculous and fundamental conversation about what causes an airplane wing to stall.)
viruslived 3 months ago
Looks like a fairly strange stall to me - pitching up and gaining altitude.
Wouldn't a stall always result in an immediate loss of altitude irrespective of pitch?
jagara1 4 months ago
It becomes rare so see a still flying G.A.F 'Nomad' by our times
bombcat91 4 months ago
@gowill2 Thank you for your scientific explanation of stall and spin. Please note that there are many variables involved for stall conditions of a wing. However, the reason for stall of a wing is the shortage of airflow over the wing, causing turbulence i.s.o. lift. Try it in a glider: very dramatic. The reasons for the lack of airflow can be numerous.
WimAlberts 5 months ago
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Looked to me like when the six people jumped off the aircraft, the immediate removal of between 900 - 1200 pounds of cargo caused the plane to climb. The pilot could have merely left the controls at the same position and the power at the same position and the plane would have gained altitude. However, it also appears he also pitched up to make sure nobody got caught on the airplane.
Nza420 5 months ago
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Ok, first off, Im not an expert(unlike everyone else on youtube). Second off, if all the skydivers are near the back of the plane, that can create a tail heavy situation, causing a stall similar to this. When the skydivers realized it and bailed, the situation could have self corrected. Not all stalls are dramatic occurences. Once again, just my non expert take.
vetitoe362 5 months ago
"oh shit i dropped the camera!"
"then go get it"
DeadminiMau5 6 months ago
Where's the stall? The white plane's aoa never changed... the one with the cameraman on it simply pulled up after the divers jumped...
nano4288 6 months ago
the jump plane pulls up before they bail out, the chase plane definitely doesn't stall. it's attitude never changes. this video's dumbbbb.
kosnow11 6 months ago
If it had stalled it would have fallen way further.
chanctonbury63 6 months ago
he just pull up and no stall happend , at least in this video stall not happen
mirzayousef 6 months ago
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No top rated comment? Now's my chance!
alientruth13 7 months ago
i stalled for about a half second before i left this and went to a better video.
dayradio65 7 months ago 24
@dayradio65 guess you clicked 'zero gravity flying at 8,000 part 2'
phantomfireNL 2 months ago
@phantomfireNL Just did. And I feel dirty now.
dayradio65 2 months ago
The plane took off with peeps sitting nicely near the wing.
Now it's in thin high level air, slowed down (Flaps are lowered) and all surfaces produce only little force. Some ~500lbs of passengers now move far behind the centre of gravity, and adding to that, cast a wind shadow on the horizntal tail, which makes it lose a good bit of its lifting area. Thus there's no chance for keeping the nose down with the elevator. The tail probably stalled, yepp.
eotunun 7 months ago
What'd you say?
dew12u 7 months ago
Looks like the jump plane started to climb just before they jumped.
PowerWagonMatt 8 months ago
If you look closely, the black plane pitches up before the skydivers jump making it appear the white one is stalling. 0:23
ifyouwantblood97 8 months ago
Stall: The point in which the critical angle of attack is reached. The critical angle of attack is specific to each aircraft, mostly based on the shape of its airfoil. When the critical angle of attack is reached (when the nose is pitched up beyond the critical angle of attack) the airfoil can no longer produce lift, as air is flowing under the wing at a much higher rate than it is over the top. IT HAS NOTHING TO DO WITH SPEED.
idontcarewatuthink 8 months ago 2
@idontcarewatuthink ty:)
gowill2 2 months ago
a stall is something when a plane goes to slow, then the wings can,t catch enough air to stay fling and yhe plane fals like a brick out of the sky and this plane is not falling out of the sky.
blackninjamoh 10 months ago
@blackninjamoh thats not true... stall has nothing to do with speed. it has everything to do with AoA and relative airflow over the wing. i can fly a plane mofricken slow so long as i dont exceed the maximum angle of attack... and you can also stall going max speed if you pull up and increase the load factor on the wings while also exceeding aoa... i've stalled going as slow as 40 knots.. and as fast as 80 knots... (which is fast for the planes i fly in! lol)
gowill2 10 months ago
@gowill2 no, a stall has everything to do with speed, if you go to slow, the windflow over the wing isn't enough for the wings to create a vacuüm above the wing, thereby creating lift, wich results in what @blackninjamoh says, the plane falling out of the sky like a brick, and yes, you are correct, you can stall an airplane by increasing the AoA over it's limit, but you can also stall by going to slow. wich aircraft do you fly in?
doudy009 9 months ago
@doudy009 my point i'm making is that your speed doesnt have anything to do with a stall.... cause it doesnt... i've flown under the "stall speed" of a plane. you just have be pitched up, it is all about relative airflow. you can stall at any speed. all that matters is the AoA is exceeded. too slow going straight and level you lose Relative airflow.. therefore exceeding the critical angle of attack. so my point stands.
gowill2 9 months ago 43
@gowill2 It depends on AIRSPEED.
You can stall at any groundspeed, but airspeed is measured by a pitot facing forward. It's getting the same speed reading as the air over your wings, so will show how close to stalling you are. (Assuming you're not a heli)
adzer45 8 months ago
@adzer45 when exactly did i say that it depended on groundspeed? oh.. i didnt.
gowill2 8 months ago
@adzer45 when i said you can stall at any airspeed, unless a plane has greater than 1:1 thrust to weight ratio, i could fly at 100 knots 200 knots 150 knots.... if i pitch up and exceed the critical aoa and change the relative airflow over the wing the plane is stalled.. that is what i meant by "stall at any speed"
gowill2 5 months ago
@gowill2 I've always wanted to see a plane in a wind tunnel, with 350Km.h-1 wind, just hanging in the air, because of sufficient relative air speed !
iloveairfrance 7 months ago
@gowill2
With all due respect, how do you fly under the stall speed? If you have not stalled, then you are not under the stall speed, regardless of what the book says, right? I under stand AoA and stalling at any airspeed speed, any attitiude, but not completely sure I understand flying below the stall speed (unless you are refering to flying in ground effects)
mybad67 7 months ago
@mybad67 "how do you fly under the stall speed"
The answer is you either can't - or your ASI is marked incorrectly. The stall speed is the IAS at which the aircraft will stall in level flight. So if your ASI is marked correctly, and you are flying straight and level, then you can't fly below the stall speed (be it S0 or S1 - it's still not possible beyond maybe 1 or 2 kts). If you hadn't stalled, and you were below eith S0 or S1 then you would be decreasing altitude.
ssouthur 6 months ago
@ssouthur
Exactly
mybad67 6 months ago
@ssouthur a plane with zero IAS is not stalled. stew on that. a stall has everything to do with relative airflow. nothing to do with speed. the speeds they tell you are just from testing... but a stall itself has nothing to do with it. once again... a plane with zero IAS is not stalled. your obviously not stupid. so think about the theory of relativity and then apply it to the flow of air relative to the movement of the aircraft....i know exactly what you guys are all saying im just saying its
gowill2 5 months ago
@gowill2 A plane (a wing) with zero airspeed is not flying either. You can't have a stall unless you have lift to begin with.
denhou1974 4 months ago
@gowill2 You've flown "under" stall speed? Not unless you had a powerplant capable of keeping you up in a post stall condition, and I'm going to guess you aren't flying a jet fighter, or a purpose built aerobatic plane. If you aren't flying something that has better than 1:1 thrust:weight ratio, then anything "under" stall speed you are falling out of the sky. You might call that flying. I call it falling.
PhrynosomaTexas 5 months ago 2
@PhrynosomaTexas I agree. If he was flying under the stall speed, then that means it actually wasnt the stall speed.
Arkthurius 2 months ago
@PhrynosomaTexas You not falling your descending
TheFr3sh1 1 day ago
@gowill2 ever stall and went into a spin only to recover 200ft above sea level?
dunhillsupramk3 5 months ago
@dunhillsupramk3 no i havnt... but if you have. i bet it was a pretty good rush, i have however had a near miss when i was in training. tell you what, i learned to scan a whooooole lot better and i probably broke the stick cause of the kung foo grip i had on it.
gowill2 2 months ago
@gowill2 although isn't there a point in the flight envelope where you would actually overstress the airplane before hitting the critical AOA?
Scote1992 5 months ago
@Scote1992 you can increase the load factor in a climb and turn.... pulling G's decreases the AoA that the plane will stall at.
gowill2 5 months ago
@gowill2 Your point is flawed. If your wing's critical alpha is 15 degrees, your stall speed is the speed when you are in level flight with 15 deg AOA. Exceed that and wings are stalled. If you pitch up, it will cause more flow seperation, and even more decrease in lift. Pitching up allows your engine thrust to counter drag and weight forces. Surely you will fly, but that doesnt change the fact the wings are in post stall condition.
AndraxxusNephilem 4 months ago
@gowill2 It turns out that critical AOA for a specific plane in a determined configuration occurs always at a determined airspeed. I believe your statement that speed having nothing to do with stall is not correct.
Arkthurius 3 months ago
@Arkthurius i am not saying that anyone here is wrong, i am saying there is a more correct answer. and the definition revolves around AoA aka, slowing down at straight and level actually increases your AoA. pilots classes as far as i know dont tell you that they just teach you a definiton and train you to recognize certain speeds in certain configurations. but its not based on a speed. its NOT BASED OFF A SPEED. thats what im saying. the speed does not determine a stall. slow OR fast.
gowill2 2 months ago
@Arkthurius maybe i should just make a 1 min video and show what im trying to say. cause i know it would just be an aha moment for people as it was for me. and then you go "welll duuuuhhh of course that makes sense" its just you never thought about it that way.
gowill2 2 months ago
@gowill2 ever read john denker's book?
Arkthurius 2 months ago
@Arkthurius nope. do tell.
gowill2 2 months ago
@gowill2 You should take a look at it. To me, technically speaking, AOA and airspeed, are 'the same', they are two sides of the same coin.
Arkthurius 2 months ago
@gowill2 why would you pitch up while flying at an IAS below the stall speed. You mean pitch down..?
eclipse245 3 months ago
@eclipse245 you ever heard of high alpha? its kind of like that (i hope my vocabulary is right) its where the wings are essentially turning into giant flaps because while your nose is facing upwards, you are still moving straight and horizontally and so your stall speeds are much lower.
KibblyCheese 3 months ago
@KibblyCheese But that's because the thrust of the engines exceeds the force of weight, hence the horizontal flight in a high alpha pass. That's the ONLY occasion that would happen.
eclipse245 3 months ago
@eclipse245 thats what i mean :)
KibblyCheese 3 months ago
@gowill2 speed is a factor..
Sjoerd9314 3 months ago
@Sjoerd9314 a factor that determines the characteristics of a stall.. not the stall itself. if i could right up on a board and show you all what i mean, you would all go "aaaaaaaaaaaaahhhhh i see what he means" and you all would 100% understand what im saying. its just i cant do that.
gowill2 2 months ago
@gowill2 i am a student pilot so i know what you mean but speed definitely is a factor! you can level off, and without speed you will stall... when you level off and slow down and maintain attitude, you will stall faster as you increase your angle of attack, which might reach the critical angle and then you also stall.
Sjoerd9314 2 months ago
Comment removed
m1leswilliams 2 months ago
If "your speed doesnt have anything to do with a stall" then you should be able to stall a plane at its maximum airspeed....
m1leswilliams 2 months ago
@m1leswilliams you can stall an airplane going maximum speed quite easily.
gowill2 2 months ago
@m1leswilliams funny that im not even a pilot and ive read so many pilots on youtube saying shit about stalls.
you just need to understand the LIFT formula and everything makes sense. simple as L=(1/2) d v2 s CL
the 2 its a small one dont know how to put that on here. D = density of the air, V2 = speed , S= size of the wing (amount of air particles that attach to the wing depending on size), and CL = ANGLE OF ATTACK.
simple put, if you go fast but ur angle of attack sucks = Stall
josebrid 2 months ago
@josebrid Cheers for that it makes a lot more sense. I'm going to keep winding people up though, because they are getting all high and mighty and deserve a slightly elevated blood pressure.
m1leswilliams 2 months ago
@m1leswilliams If you want to have some fun, bring up the subject of stalling due to u-turning from headwind to tailwind!
winterka100 2 months ago
@m1leswilliams
"you should be able to stall a plane at its maximum airspeed...."
And indeed you can. "Stick and Rudder" is a great book that explains all this rather well.
llanbo 1 month ago
@llanbo I haven't read it, but I do know that it should not say maximum... it should say maneuvering. Since between maneuvering speed and never exceed speed, you will not stall the plane, you will do structural damage to the aircraft.... so whatever book that is... if that is a direct quote... is WRONG
tburns7v 1 month ago
@tburns7v
You should read it, then you'd understand why YOU'RE wrong ;-)
Simply put: Exceed the critical angle of attack (at any speed) and your wing will stall, as many others have pointed out here. If you do so by making ham-fisted control movements above Va, you have a good chance of damaging the aircraft as you say, but there are ways of stalling that don't require you to do that..
llanbo 4 weeks ago
@llanbo You are right!
40joel 1 week ago
It is clearly visible that few seconds before the launch the airpline climbs (just look to the plane on the left). With a stall the plane dives, doesn't stall!
Senseimatty 10 months ago
AMAZING
GeorgeChucher 11 months ago
looks like fun untill u find out u forgot ur parashut
313bruce 11 months ago
stall: plane simply stays in one place during flying, and begins to fall.
Tundraboy05 1 year ago
@Tundraboy05 Stall: departure of aircraft from normal flight due to the airflow over one or both wings reducing so much that those wings can no longer produce lift. An aircraft does not have to be "in one place" for it to be stalled..
frankplummer 11 months ago
It did not stall.. it has a really high angle of attack.. but it didn't stall..
MagnesiumAlloy 1 year ago
Ah, the fabled "climbing stall".
blueb0g 1 year ago 2
@blueb0g you clearly dont know what a stall actually is. i've had climbing stalls. (on purpose... for training)
gowill2 10 months ago
there were no any stalls here i thing
bekemiki 1 year ago
i wanna skydive.. but i would probably poop myself in the process.
airsoftbro123 1 year ago
OOOOOOOOOOOOOOOOMG i soo wana do that
MrFlyahh 1 year ago
WORT WORT WORT
fredvonnothing 1 year ago
Not a stall, but cool footage
RobscoRC 1 year ago 2
holy shit!!! those 6 got balls!!
migueyeah123 1 year ago
Recovery from a straight ahead stall is about as dificult as opening a soft drink can. Stalls are a non-event if you have the altitude. The basic premiss of a good landing is to stall the plane as the wheels touch the tarmac. As far as this vid is concerned I am not sure anybody stalled anything.
hammerogod 1 year ago
@hammerogod You're right! I can't see any stall, too. In addition to your comment there are 2 kinds of stall were recovery is in most cases impossible. The first is flat spin which means a loss of control of yaw rudder while aircraft spins and the second is deep stall. Deep stall means a stall of the elevator of an airplane with a T-tail.
svennoair 1 year ago
@svennoair Aerobatic Training offers additional training on Stalls. I highly recommend extensive Stall Recovery training. Under all normal circumstances Stalls are to be avoided unless you are Patty Wagstaff and flying a 400 HP Pitts Special or something equally capable of powering out of exotic attitudes. Even Bob Hoover would have avoided any situation that was likely to put him in a Flat Spin.
hammerogod 1 year ago
This stall is balls!
Aeden17 1 year ago
i dont see any change in the attitude or speed in the airplane.
atariocero 1 year ago
salty balls :)
pazimpinlord 1 year ago
Its not a stall and it has nothing to do with the cg from the jumpers..... The pilot just yanked on the stick. nothing more
parawhat1 1 year ago
lol it was funny how he just fell out the plane
TheRonnieCool 1 year ago
That would be SO MUCH FUN
XxL33ZOxX 1 year ago
The second plane was the one that stalled. It stalled for a slight second but managed to regain control.
SakuChanofthesand 1 year ago
what if a skydiver landed on that plane!! haha
kahone0909 1 year ago
@kahone0909 shoot a 180-200 pound object at 120 mph at an airplane and find out.
playstationrox999 1 year ago
the AoA seems fine, its the plane that they're jumping off looks like its climbing...
75flossie 1 year ago
or because the center of gravity moved so far aft he didn't have enough elevator authority to counteract the weight shift.
awilliams60 2 years ago
0:30 look at the world the islands
bomcool 2 years ago 2
very high
sinan9393 2 years ago 2
pish
dandies1903 2 years ago
it looks Freaking awesome to Sky Dive its Yust I Dont Have The guts or Whatever to Do IT !!! I'm Afraid of It !! Too High Arrrrgggg!
nikthepilot 2 years ago 2
Uuugh that gave me chills
LianzThe1337 2 years ago
Amazing, got to do this some day!
DavidSlagter 2 years ago
Nice video bro!!!!
McDawCa 2 years ago
why? why does it stall on purpose?
unatriscuitagain 2 years ago
to get slow
dieoma100 2 years ago
how is this a stall?
Iris421989 2 years ago 46
The nose pitches up when the airspeed dropped due to the excessive drag caused by all the bodies hanging off the airframe. A stall doesn't mean a crash, just that the air flow over the wing has decreased sufficiently to cause a temporary loss of lift. It can be corrected by dropping the nose, or if sky divers drop off.
bmkay 2 years ago 2
i know what a stall is
all im asking is how does this video show a plane stalling?
Iris421989 2 years ago 14
Look at the angle of attack with respect to the horizon, at 23 seconds the nose pitches up. that would indicate that the pilot was either an idiot trying to shake the sky divers lose, or he stalled.
bmkay 2 years ago
i think that perhaps they were both straight and level, and just prior to the skydivers jumping off he suddenly put the plane 20 degrees nose up.
but that still doesnt mean a stall. maybe he just wanted to make the skydivers feel a little more funny in their tummy.
for me to believe this is a stall id have to see the plane stall, not simply put the nose up.
Iris421989 2 years ago
This comment has received too many negative votes show
The nose would drop if he stalled, not rise.
RobertGary1 2 years ago
@RobertGary1 Lol.. yes it can rise when stall..
choosymoosy 2 years ago
Only if its loaded extreamly aft. That would be very illegal and dangerous.
-Robert, FAA Certified Flight Instructor
RobertGary1 2 years ago
@RobertGary1 I suppose it could depend on the aircraft, but most aircraft I'm familiar with the nose will rise in a stall.
bmkay 1 year ago
@bmkay Can you name such an airplane? If the nose rises in a stall the center of pressure would have to be ahead of the center of gravity. That is normally a deadly situation and is why pilots perform a balance calculation in addition to verifying weight. The plane would be unstable in flight and would have low control effectiveness, in addition to having this poor stall characteristic.
RobertGary1 1 year ago
dude,dont play hawx...
aleksandarfriscic 1 year ago
I agree. As a flight instructor I can't see anything that tells me the airplane stalled.
RobertGary1 2 years ago
Agreed, just piss poor piloting. Looks like he realized he was low then over reacted.
childsca 2 years ago
@Iris421989 if you look at the other plane right before they jump it drops quickly for a couple of seconds
floaterHD 6 months ago
Actually, dropping the nose would not cause a stall ( as seen in many steep dives ), but pitch the nose too high & stall.
sphinxrising58 2 years ago
Not to mention a sudden shift of weight toward the aft. "Aft CG".
SenorSpode 2 years ago
@Iris421989 the other plane stalled
bajesus666 1 year ago
@bajesus666 no it didnt moron
joshuan542 1 year ago
@Iris421989 you must not know what a stall actually is.... it isnt always easy to tell from the outside looking in. the sudden up of the AoA could easily cause the plane to stall. and pilots train to recover from these pretty mofricken quick. if it was a stall or wasnt you and i wont ever know... but its pretty likely
gowill2 10 months ago
@gowill2 you don't know anything about me, interesting that you're ready to claim i dont know what a stall is.
by the sound of it you're a pilot, so am i. your description of what a stall is very accurate, its pure AOA.
all i'm saying is that there isn't enough evidence in this video to claim that either of the planes are stalling. sure the plane that the cameraman is onboard climbs sharply but that doesnt mean it is stalled.
Iris421989 10 months ago
@Iris421989 this is true what you say and i did jump to the notion you didnt. my bad.
gowill2 10 months ago
@Iris421989 i believe the other aircraft stalled, unsure though
bajesus666 7 months ago
@Iris421989 it is a stall. 42 people like your comment because they want to prove others wrong even if they are 100% right!!
flight77711 7 months ago
I don't think it's a stall . Notice the horizon rise , not still its position . More like his plane was climbing , not the other one stalling .
TheMephisto1995 2 years ago
fucking A. load of bullshit
unhingeddavo 2 years ago
how did he get there!
alsayed20 2 years ago
i doubt there was a stall, you don't see a decrease in the AOA
dube85 2 years ago
What those guys doing on this plane. ? o.0'
Arturp96 2 years ago
jumping off
StinkyCheeser 2 years ago
playing chess, thats what it says in the description isnt it???
abhiginimav 2 years ago
if i were them id be like omg!!!!!!! am i going to live!!
suzyq314 2 years ago
This comment has received too many negative votes show
BOOOOOOOOOOOORING!
Diiig0 2 years ago
cessna grand caravan? FFTW
GamingDude12 2 years ago
it looks like a PAC
Bullit20 2 years ago
yeah i think so.
hogey74 2 years ago
wen we jump like that does a person feel anything in the stomach?- i know it may be a yes
dragonscape99 2 years ago
There's not much of a falling sensation like a when riding a roller coaster.
hoppurr 2 years ago
no u do not feel anything in your stomach.. well maybe pain if u have a hard opening but the stomach 'flop' that u get while riding on a roller coaster is produced by seeing things go past you fast or dropping fast.. however u drop at pretty much the same speed while skydiving and there is nothing to see up there bar clouds if your unlucky.
joshbanford 2 years ago
If a stall actually happens....its not in the film. The airplane may have stalled after the jumpers got out. But it simply started to climb.
flyinbrian87 2 years ago
if thats the NZ jump plane...ive jumped from that sucker
Blind648 2 years ago
you guys are crazy doing that omg,.
jjtc100 2 years ago
our pac 750 does the same thing with alot of jumpers on the back.
sayernmorgan 2 years ago
The plane simply does not stall. As the jumpers are all aft of the wing the plane's cg is thrown off and raises the nose becuase the tail becomes too heavy. Proof that there is no stall is that the plane climbs above the other plane in view. If the plane stalled it would lose altitude reguardless of the pitch. There is no stall recovery either. The camera looks up after the jump and the plane is in level flight. If it stalled it would be sinking nose up, or be nose down for a stall recovery.
BigAirJ 3 years ago 5
yeh, people are dumb and don't watch the video, aren't a skydiver, aren't a pilot, or like to see their name in writing on a youtube page (Hi mom!) Just found out today we're getting a PAC 750 to jump for the summer. Woot!
BeaversAreInsane 2 years ago
BigAirJ: "The plane simply does not stall. As the jumpers are all aft of the wing the plane's cg is thrown off and raises the nose becuase the tail becomes too heavy."
This means an increase of the angle of attack and this could cause a stall. But to me it is not visible if they are stalling...
Th0111 2 years ago 52
There is no way the Co G change in an XL would cause the nose to pitch up like that, the pilot pulled up quite clearly-
kiwipilot84 2 years ago
so, what would you call a maneuver in which an airplane's critical angle of attack is exceeded in a climb?
chasteh 2 years ago
stall?
burt2800 2 years ago 2
yep.
In fact, a training maneuver denoted the "accelerated stall" can demonstrate this. This is one of the reasons airplanes have "maneuvering airspeeds." It is the speed, below which, a wing would stall as opposed to break during an abrupt input. This means, no matter what your flight path, you can stall a wing (an airplane too!) by simply forcing it into a climb faster than the wing will maintain lift. This happens often in aircraft used for skydiving. Good guess.
chasteh 2 years ago
it wasn't a guess really. i knew it but i thought you didn't XD. well thank for the exact explanation.
burt2800 2 years ago
Quite right
dalequarmby 2 years ago
lol exactly
scubadiver75 2 years ago
Comment removed
BigAirJ 3 years ago
I don't see a stall there. Just a high rate of climb...
netlord 3 years ago 4
Taupo??
NZ500D 3 years ago
was that other plane a GAF nomad?
givinguptheghost1988 3 years ago
nomad indeed, we like to call it the slowmad though lol
jetteflat 2 years ago
usually when you stall the airplane goes downwards ive never heard of a upward stall but i could be wrong
JailNiggaUGay 3 years ago 3
This comment has received too many negative votes show
yup you are... stall means when the aircraft is gaining altitude at a too high vertical speed, then the aircraft finally stalls and turns down, this takes some time though it has to decrease its speed first
Sjoerd9314 3 years ago
This is incorrect, too. A stall occurs when the aircraft exceeds its critical angle of attack. This can occur at any airspeed and pitch attitude (e.g., if you pull out of a dive too rapidly and exceed the critical angle of attack, you will stall). An easier way to think of it, as mentioned in "Stick and Rudder," is that an aircraft stalls when the difference between where it is pointing and where it is actually going is too great (think of a skidding car). Hope this helped clear things up.
SkyWayMan90 3 years ago 22
@SkyWayMan90 an airplane stalls when the airplane hits a certain airspeed as well. a cessna 152 will stall at under 20 MPH and i know this because practicing stalls i was up to about 18 degrees for my 1st airspeed hit about 24 and we stalled. then the second time we got to about 27 degrees hit about 20 MPH and stalled. it depends on airspeed ans pitch not just one or the other.
N617A 1 year ago
@N617A You are wrong. That airplane didn't stall because you were at 24 or 20 mph...it stalled because you exceeded the critical angle of attack. This can happen at ANY airspeed...20 in level flight, 130 in a vertical dive when you try to pull out...ANY speed. The reason they mark airspeeds on the ASI is because exceeding CAOA at a low airspeed is the most COMMON way of stalling. St