@gpgab971 Yup it sure does...even a limestone strip...Hercy Birds come in now and then too. nothing much bigger though. There are pads for a for a few helicopters..not too bad of an area now....as long as scirmishes with indiginous personel remain at minimums lol
@jaymzedge1 Thats nuts, i remember waking up in a dirt field every morning and filling Hesco barriers for months. There a was a main building and a small Hajji mart but that was it. Do they still sell Spider monkeys for $20?
@gpgab971 was only there for a couple weeks flying missions...didnt get alot of sight seeing in from the ground lol...though I did hear about it never actually saw them.
@jaymzedge1 Guys bought up monkeys and shit started disappearing. Found out later the monkeys would grab anything they could and run back to their rightfull owners so that the Haji mart could resell you your stuff. Not cheap stuff either, i've seen a private getting smoked for having to "buy" back his molle assault ruck and night vision. Bastards! But i must say i do kinda miss the piss tubes facing eachother in front of the chow tent. Classic.
Looks like my Century Swift 16 RC Heli. It does this on every spool-down - despite dozens of hours meticulously balancing, adjusting, greasing and replacing every part in sight.
I think the reason this Acft was selected for this test was due to an incident that occured in 1998. The AFCS malfunctioned and caused one of the Integrated Linear Control Actuator extensible links to actuate which caused the Acft to do a 360 degree roll about its longitudinal axis. The Acft recovered and landed safely. The roll however, overstressed the airframe. They were unable to duplicate the problem w/ the AFCS. So this was how they "put her down" I know I would'nt want to fly in it.
This isn't a test gone wrong. It was a test to distruction showing what happens when you don't take into account the effects of resonance.
Here, the rotors were made to spin at a certain frequency, the 'resonant frequency' of the air frame, causing vibrations to build up, each time getting larger and larger until the airframe eventually fails and the aircraft falls apart.
Just a bit of info for anyone who's interested :)
you know what happen if u put 2 frequency on a vibrating spheare with all the materia that exist(just need a few if u want but u have to had all the materia that is in the universe) and try to find the perfect simbiosis on the materia with some temperature. i cant do that in my home lol the question is who can?
no, ground resonance is the result of ground contact at a specific point in a rotor heads rotation, this can a dyssymetry of resonance in the rotor heads of a tandem rotor or fully articulating single rotor helo's. All helo pilots are taught to lift off the ground to cure the problem, if you don't then, well, you can see the destruction in the video.
@THUSxFAR No your wrong, sorry. Captain Baxter is correct. This is a resonance test. All materials have a natural frequency that they like in lack of better terms to oscillate at. If you don't test or take that into consideration you will have this. This effect can be seen with breaking glass with sound or the Tacoma Narrows Bridge incident.
@CaptainBaxter U Sure it's got nothing to do with the lead/lag dampers on the articulated rotor head dampening each blade???? usually when one of those go you only find out when you come in to land. yes proper maint is crucial.
Got nothing to do with the freq of the spinning blades v's airframe. that's from a Heli Mech.
It's a lot to explain..but I will try. fully articulating rotor systems allow each blade to individually lead, lag, or flap (just a little) to help with vibration and other aerodynamic factors associated with a helicopter. All this movement causes similar but different vibration freq's through the airframe(known as sympathetic resonance) when the Acft is on ground and the struts are not serviced properly to absorb all these vibe freq's they "sing" and the end result is what you see in the video.
The tail number of the aircraft in this video is 84-24156. I was assigned to it as a brand new crew chief in 1989-1990. At the time this video was made, 156 was at Aberdeen Proving Grounds being used for ballistics testing. Ground resonance, an unfortunate drawback of articulated rotor systems such as the chinook's, is cited as the reason the aircraft ate itself. Google "D Model Chinook" to read an article about this aircraft rolling inverted in flight.
ilovecheesypizza its actually something called ground resonance they were testing with a scrapped chinook meaning they were throwing it out anyways. its caused when a mechanism in the hub called a damper is broken and the lead and lag of the helicopter rotor spinning causes the blades to bunch up on one side creating that major vibration
The oscillations caused by the operating frequency of the rotors is similar to its natural frequency, thus you get maximum amplitude of oscillations. In this instance they are too big and it tears apart the helicopter.
It's a test, it's the same Chinook as you would see flying, it's the forces that are applied to the chopper through the occurrence of ground resonance that make the Chinook appear as if it was constructed of cardboard :)
wtf? of course not stupid! when the chinook is in the air, it moves around a bit, but we dont notice. since it's not going anywhere and it's still pushing air down and spinning, it can't move around like it does in the air, AND it's tied down. the back on wobbled, weakened it, and it broke. like if you bend a paperclip too many times with the same movement. it gets weak and breaks.
to clear this up, the chinooks wheel struts are charged with nitrogen, and are hydraulicly controlled to balance out the helo with weight shifts. there is a similar counter balance system in the rotor heads. in this test, they put in an input that would be forcefully counteracted by the counter balance systems, therefore causing the helo to sway side to side as it tries harder and harder to correct itself, which it cant because being strapped down, it is only fighting itself.
They have gearbox as well as rotor test stands at the factory. You pass by them when you go by the Boeing factory. I guess they wanted to see the totall effect on an airframe.
nice vid illustrating resonance... its for this same reason that an opera singer can produce a note a note that would make a wine goblet rip itself apart... i think i'll watch it again lol
This comment has received too many negative votesshow
it was a windy day! i love how these people talk shit about oh i was a ft pilot and shit ohh its to do with the engine and the power! no it wasnt u can fucking hear the wind
listen here genious'. I am a ft. rucker pilot. I have flown the shithook but am specialized in the blackhawk. They do this because they have excess used Chinooks and they want to see what happens with the insane amount of power a chinook has when lifting a large load as it does for a while. There it is the correct answer. Now all you guys can quite bickering like kids. any more brain-busters just ask.
If this is a result of excess power being applied whilst tethered, why is there almost no coning angle on the blades?
To the best of my knowledge ground resonance like this is the effect of harmonic frequencies. Each vibration comes in time with the one after, so that the cumulative effect gets worse and worse.
I am glad you're a pilot, but I worked in Static Test/Flight Test for Kaman for 11 years, and this video is almost identical to ground resonance tests for the SH-2's. I wont doubt they tried a max-Q test and this happened, but it would be easier to believe this is a power test of the blades were swooping upward instead of level flight.
I learned this on my Rotary course....but Wiki says it too easy compared to what i could say:
Ground resonance, in fully articulated multi-bladed helicopters, is a hazardous condition during touchdown or at other times when the helicopter is running while sitting on the ground. A series of shocks to the landing gear can pass through to the rotor disk and cause an imbalance in the rotor system.
woooow the chinook is a Canadian design? Then why does an American company (Boeing) produce and modify them. And I agree with Porkchop...you're all fucking retards, its a test to check the balances on the blades.
They balance the blades in the whirl towers. We build and balance our own blades in house, and we do a damn fine job of it at that. That's one of the selling points of the Chinook. This has nothing to do with balancing the blades. It wasn't like they said "hey let's strap on a set of blades and see if they're balanced," thus sacrificing an entire airframe as a result.
oh..ok I know which one now that was supposed to be a funny comment like on that movie with the police car tied to a pole and it pulled the axle out the one above you meant the engine was not properly repaired and it causes engine failer as for youtube I don't know either
yes it was a test and yes they knew what was going to happen. but i don't think they were expecting catasrophic failure...
i know cars are crashed tested (heli's too) but thats usually in the normal (more common) horizontal flight with speed scenario (to get an idea of structure failure).
this seems like a very unlikely mode of failure to have a very expensive test done.
comeone, how many times is the heli going to crash like that.....
Not all things 'look nice' to do their job well, I point you to the A-10. It may look ugly but it's one of the best of its kind. As is the Chinook. Holds alot, well armoured for a chopper and very strategic to use.
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yeah because you guys probably dont test your shit out like we do, we care about our crewmen, and troops, if your saying that you dont test any of your shit then you are correct your small country is shit, you fail.
Man, did you see how much the rotor blades went out of phase?! I've encountered G.Res a few times and it was corrected within a second or two by lifting up to a hover...which loads the disk and then brings the blades back into phase with each other.
The problem is the helicopter is grounded and the rotors are rotating at the frequency of the helicopter (yes everything has a resonant frequency). The ground is simply acting as a system for dampening the effects of the helicopter blade rotation. However the energy generated with the rotor blades becomes too great and the copter just falls apart
Indeed. Sort like how your car insurance money. When it's not being spent on stupid people, it's used to buy nice shiny new cars, like Corvettes, Acuras, and Caddys. Those shiny, expensive cars are then crashed into walls at 40 Miles and Hour. It's called engineering you fucker, and you should be old enough to know that.
Ok first off, I spent wasted time finding what I actually said. Then I realised that it wasn't worth it to debate you because I'm tired. So I'm just going to point out the fact that it took you more than two months respond with that weak ass comeback. TWO MONTHS? If I recall, you're like 50 years old, and apparently, very daft. When they perform these tests, they push them to the max. This would happen to any aircraft, American or not. So pull your head outta your ass. It was supposed to fail.
mgo i have a life, and it's not spent glued to youtube, so if you're l(.)(.)king for prompt replies, please don't hold your breath. yes, i'm over 50, and damn proud of it. how old are you, 12 perhaps? or is that your i.q.? i still say, the test was a waste of time and my hard earned tax dollars.
This is what will happen when you play dubstep in helicopter
AmadiPL 15 hours ago
Make no wonder it tore apart, it was tethered to the ground.
mafoto90 1 day ago
Fuckin scary
1123359 1 day ago
You can see cutting power did not help, best thing is to add power and lift off the ground ASAP.
truckdrivah 2 days ago
Ok ready for takeoff
Themysteriousmanguy 1 week ago
sweet i think it is ready for c5 transport
cono1449 4 weeks ago
Looks like Jelly at the end! 'I'll take the bus'
jjhaynes23456 1 month ago
Holy $**t ! It busted !
stixie211 2 months ago in playlist HELICOPTER CRASH
looks like someones having a good time.
yourmomwasherelol 5 months ago
Did anyone check the air in the tires? Headlight fluid?
dridley11 5 months ago
If THIS COPTERS A-ROCKIN', DON'T BOTHER KNOCKIN'! YEAH BABY, YEAH! :-D
Patriot042 7 months ago 2
may rofl copter goes s... lemme out!! lemme out!! lemme out!! lemme out!! O___O
chimoy1 7 months ago
If the copter is a rockin' don't come a knockin' !!!!!!!!!
btlfn723 7 months ago
Alright...PTU's off after rotors stop turning......check. Great, let's go get lunch.
praetorian371 9 months ago
urmmm..... i think its a bit broken.
spotifyZ 11 months ago
well...that got fairly trashed
stdavross666 11 months ago
I feel sorry for the 3 people who were on board this helicopter. RIP
PhantomUAV 11 months ago
O Jesus, son of Mary! Is thy Lord able to send down for us a table spread with food from heaven
ahmd1431 1 year ago
resonance - it will fuck your shit up!
MustNotRead 1 year ago
does anybody know what gpg and jay are talking about.
markgallicano 1 year ago
This has been flagged as spam show
@markgallicano Nah, they're just retards.
shayk47 1 year ago
Scoop it up and put it on Craigslist. Somebody will buy it. ;-)
lwm762 1 year ago
lol shaking around much.
Freddiewgbs 1 year ago
Bailing wire and duct tape .....
BuckleNutz 1 year ago
A lil bit of bondo and paint...that will buff right out
15jumpmaster 1 year ago
SHAKE THAT ASS BITCH!
BlakMastachief 1 year ago 16
jajaja i was thinking the same shit @BlakMastachief
codmad11 11 months ago
Fookin' 'ell...
Harris91 1 year ago
That will buff out...
cbarn360 1 year ago
shake shake, shake shake oh shake yeah !
izwanisme 1 year ago
This is why proper maintenance is so important!
USArmy15U 1 year ago
@USArmy15U yeah and a proper pre-flight is essential as well...as my crew found out in Salerno Asscrackistan....
jaymzedge1 1 year ago
@jaymzedge1 Wow, Salerno has a LZ? It's been almost 9 years since i was last in that shit hole.
gpgab971 1 year ago
@gpgab971 Yup it sure does...even a limestone strip...Hercy Birds come in now and then too. nothing much bigger though. There are pads for a for a few helicopters..not too bad of an area now....as long as scirmishes with indiginous personel remain at minimums lol
jaymzedge1 1 year ago
@jaymzedge1 Thats nuts, i remember waking up in a dirt field every morning and filling Hesco barriers for months. There a was a main building and a small Hajji mart but that was it. Do they still sell Spider monkeys for $20?
gpgab971 1 year ago
@gpgab971 was only there for a couple weeks flying missions...didnt get alot of sight seeing in from the ground lol...though I did hear about it never actually saw them.
jaymzedge1 1 year ago
@jaymzedge1 Guys bought up monkeys and shit started disappearing. Found out later the monkeys would grab anything they could and run back to their rightfull owners so that the Haji mart could resell you your stuff. Not cheap stuff either, i've seen a private getting smoked for having to "buy" back his molle assault ruck and night vision. Bastards! But i must say i do kinda miss the piss tubes facing eachother in front of the chow tent. Classic.
gpgab971 1 year ago
@USArmy15U I agree
DaveStarr4 1 year ago
its great fun seeing a machine dismantle itself so spectacularly knowing that no one was in any danger!
blueluny 1 year ago
this is not funny its a nice heli!
patrickripassa 1 year ago
alright! who's payin' for this fiasco?
amartinjoe 1 year ago
@amartinjoe The citizens of USA
WEDFED908 1 year ago
looks like a frong that has rabid aids or somethign... but seriously. whats the test for?? and how the hell did that happin?
jehovalopez 1 year ago
she can still fly
jaredwilder88 1 year ago
Looks like my Century Swift 16 RC Heli. It does this on every spool-down - despite dozens of hours meticulously balancing, adjusting, greasing and replacing every part in sight.
KDanagger 1 year ago
What is that helicopter made of?
gavinola 1 year ago
I thought that flying apart was a feature that came standard on all helicopters.
We fast movers used to call them "a bunch of loose parts flying in close formation".
conspiracy777 2 years ago 2
Very impressive!
RaptorGP 2 years ago
I think the reason this Acft was selected for this test was due to an incident that occured in 1998. The AFCS malfunctioned and caused one of the Integrated Linear Control Actuator extensible links to actuate which caused the Acft to do a 360 degree roll about its longitudinal axis. The Acft recovered and landed safely. The roll however, overstressed the airframe. They were unable to duplicate the problem w/ the AFCS. So this was how they "put her down" I know I would'nt want to fly in it.
uh60ch47chief 2 years ago 2
@uh60ch47chief Do a barrel roll!
nealshireman 2 years ago
I DON'T KNOW WHAT I'VE BEEN TOLD, BUT ALL I KNOW THAT HELICOPTERS GONNA EXPLODE!
Sound off. fall apart!
That was a fun $2,600,000 LETS DO IT AGAIN!
beaman220 2 years ago
made in china
BiHKalashnikov 2 years ago
ITS A FACE!
MultiMelonhead 2 years ago
that was awesome
Curicua 2 years ago
This isn't a test gone wrong. It was a test to distruction showing what happens when you don't take into account the effects of resonance.
Here, the rotors were made to spin at a certain frequency, the 'resonant frequency' of the air frame, causing vibrations to build up, each time getting larger and larger until the airframe eventually fails and the aircraft falls apart.
Just a bit of info for anyone who's interested :)
CaptainBaxter 2 years ago 108
you know what happen if u put 2 frequency on a vibrating spheare with all the materia that exist(just need a few if u want but u have to had all the materia that is in the universe) and try to find the perfect simbiosis on the materia with some temperature. i cant do that in my home lol the question is who can?
detimarin 2 years ago
@CaptianB
So all you have to do is set the throttle for a certain speed and the thing will come apart? That is scary!
kenmtb 2 years ago
no, ground resonance is the result of ground contact at a specific point in a rotor heads rotation, this can a dyssymetry of resonance in the rotor heads of a tandem rotor or fully articulating single rotor helo's. All helo pilots are taught to lift off the ground to cure the problem, if you don't then, well, you can see the destruction in the video.
li7in6 1 year ago
@CaptainBaxter egr Mechanical Vibrations ftw!!
wrenthereaper 1 year ago
@CaptainBaxter
Not to mention this can happen if the tires are not inflated to the correct PSI.
dagmaar1975 1 year ago
@CaptainBaxter it seems to me this test shows how cheap and easily it falls a part.....PAPER!
THUSxFAR 1 year ago
@THUSxFAR No your wrong, sorry. Captain Baxter is correct. This is a resonance test. All materials have a natural frequency that they like in lack of better terms to oscillate at. If you don't test or take that into consideration you will have this. This effect can be seen with breaking glass with sound or the Tacoma Narrows Bridge incident.
vampov 1 year ago
@CaptainBaxter U Sure it's got nothing to do with the lead/lag dampers on the articulated rotor head dampening each blade???? usually when one of those go you only find out when you come in to land. yes proper maint is crucial.
Got nothing to do with the freq of the spinning blades v's airframe. that's from a Heli Mech.
Blackbird23008 1 year ago
lol "made in china?"
Do25mi10ni93k 2 years ago
Hahahaha Made In China is exactly what I thought of.
chickafinch 2 years ago 4
Weah make wif da bess quahtee. lol
beaman220 2 years ago
lol @ the roflcopter
gnaynek 2 years ago
I've flown in one of these.. it feels like its gonna fall apart but it is actually incredibly safe.
Goatmanification 2 years ago
Ok, i'm not flaying anymore :D
cosmolv 2 years ago
Correction: I'm not flying IN A TIED DOWN AIRCRAFT anymore... lol. BTW i'm not complaining at you i'm just adding a little light to the situation...
Goatmanification 2 years ago
what is ground resonance exactly? i dont understand
GenXCypher 2 years ago
It's a lot to explain..but I will try. fully articulating rotor systems allow each blade to individually lead, lag, or flap (just a little) to help with vibration and other aerodynamic factors associated with a helicopter. All this movement causes similar but different vibration freq's through the airframe(known as sympathetic resonance) when the Acft is on ground and the struts are not serviced properly to absorb all these vibe freq's they "sing" and the end result is what you see in the video.
uh60ch47chief 2 years ago
The tail number of the aircraft in this video is 84-24156. I was assigned to it as a brand new crew chief in 1989-1990. At the time this video was made, 156 was at Aberdeen Proving Grounds being used for ballistics testing. Ground resonance, an unfortunate drawback of articulated rotor systems such as the chinook's, is cited as the reason the aircraft ate itself. Google "D Model Chinook" to read an article about this aircraft rolling inverted in flight.
borntofly2000 2 years ago
SOUND OFF CREW DOG!!!!! GOOD WORK. We looked forward to seeing you guys in Dahairan Sudia. USAF (retired)
ljsavmech 2 years ago
Comment removed
borntofly2000 2 years ago
ilovecheesypizza its actually something called ground resonance they were testing with a scrapped chinook meaning they were throwing it out anyways. its caused when a mechanism in the hub called a damper is broken and the lead and lag of the helicopter rotor spinning causes the blades to bunch up on one side creating that major vibration
PteShaggy 2 years ago
This explains why we're always short of CH-47s in Pacmanistan. They're shaking them to pieces!
doobedoo22 2 years ago 2
Gotta love how the first rotor is still spinning at the end...
Rcracer867 2 years ago
rubber chinook
spajsboyz 2 years ago
The oscillations caused by the operating frequency of the rotors is similar to its natural frequency, thus you get maximum amplitude of oscillations. In this instance they are too big and it tears apart the helicopter.
OnGiantsShoulders123 2 years ago
well we learn one thing from this.... a chinook helicopter cannot move the earth
echo4760 2 years ago 5
damn gravity always screws it up
DocVuDu 2 years ago
Comment removed
FPVsean 2 years ago
haha looks like it
blackhole522 2 years ago
It's a test, it's the same Chinook as you would see flying, it's the forces that are applied to the chopper through the occurrence of ground resonance that make the Chinook appear as if it was constructed of cardboard :)
internetilliterate 2 years ago
wtf? of course not stupid! when the chinook is in the air, it moves around a bit, but we dont notice. since it's not going anywhere and it's still pushing air down and spinning, it can't move around like it does in the air, AND it's tied down. the back on wobbled, weakened it, and it broke. like if you bend a paperclip too many times with the same movement. it gets weak and breaks.
ilovecheesypizza 2 years ago
to clear this up, the chinooks wheel struts are charged with nitrogen, and are hydraulicly controlled to balance out the helo with weight shifts. there is a similar counter balance system in the rotor heads. in this test, they put in an input that would be forcefully counteracted by the counter balance systems, therefore causing the helo to sway side to side as it tries harder and harder to correct itself, which it cant because being strapped down, it is only fighting itself.
madgunner14 2 years ago
they need to put a pulse wave arestor with
a cap shock liner line b-type spot check.
that should keep the shaking down
rickbar123 2 years ago
lmao
ovatsug1 2 years ago
They have gearbox as well as rotor test stands at the factory. You pass by them when you go by the Boeing factory. I guess they wanted to see the totall effect on an airframe.
BLKSHiEP 2 years ago
result: the effect is pretty awesome
cmdrthac0 2 years ago
70% of people doesn't know what resonance is...
gr4nd384 2 years ago
I do... Resonance is the the part of your joint that appears to turn to liquid when you take a big toke off of it. I must be the other 30%.
FlightLevelHeaded 2 years ago
ерунда!!!
bobturanov 2 years ago
DAYUM! That sucks! Well, that chinook's useless now...
SakuraOfTheSea 2 years ago
ehh,put some new spark plugs in there ,she'll run fine
skywalk762 3 years ago 6
Nah I think she just needs an oil change.
xXFr0gXx 3 years ago 46
I FINK YA GEARBOX FELL OFF!
DIESEL1844 3 years ago
Do you not mean: I think that your gearbox has fallen off?
thedavish 2 years ago 2
nice vid illustrating resonance... its for this same reason that an opera singer can produce a note a note that would make a wine goblet rip itself apart... i think i'll watch it again lol
homeslice2387 3 years ago
"When the chopper's a-rockin', don't come a-knockin'!"
AngryDeli 3 years ago 5
This comment has received too many negative votes show
it was a windy day! i love how these people talk shit about oh i was a ft pilot and shit ohh its to do with the engine and the power! no it wasnt u can fucking hear the wind
royal1marines 3 years ago
Jelly Chinook :D
phoenixstorms9 3 years ago 3
listen here genious'. I am a ft. rucker pilot. I have flown the shithook but am specialized in the blackhawk. They do this because they have excess used Chinooks and they want to see what happens with the insane amount of power a chinook has when lifting a large load as it does for a while. There it is the correct answer. Now all you guys can quite bickering like kids. any more brain-busters just ask.
azsuter 3 years ago
If this is a result of excess power being applied whilst tethered, why is there almost no coning angle on the blades?
To the best of my knowledge ground resonance like this is the effect of harmonic frequencies. Each vibration comes in time with the one after, so that the cumulative effect gets worse and worse.
hawktalisman 3 years ago
I am glad you're a pilot, but I worked in Static Test/Flight Test for Kaman for 11 years, and this video is almost identical to ground resonance tests for the SH-2's. I wont doubt they tried a max-Q test and this happened, but it would be easier to believe this is a power test of the blades were swooping upward instead of level flight.
usmc7242 3 years ago
ak5286 u got to watch what your saying in an American language on a American web sight
seethebob 3 years ago
y?.
SiliconBong 3 years ago
I learned this on my Rotary course....but Wiki says it too easy compared to what i could say:
Ground resonance, in fully articulated multi-bladed helicopters, is a hazardous condition during touchdown or at other times when the helicopter is running while sitting on the ground. A series of shocks to the landing gear can pass through to the rotor disk and cause an imbalance in the rotor system.
kandem360 3 years ago
ever think of turning off the engines? hahaha
DanielTheManiel33 3 years ago
it looks like it has been on an epesode of pimp my ride the way it is bowncing around lol
rotostart2 3 years ago
someone had their laundry in unbalanced
crownroyal111 3 years ago 4
This comment has received too many negative votes show
Man what a crappy helicopter !!!
I beat itself to death in just 15 seconds???
I'll NEVER EVER fly with american built aircraft!
Actually that goes for american built cars as well.
viktorhansenoslo 3 years ago
You are a fucking idiot. It is an engineering test.
Why do fucking idiots like yourself even bother opening your mouth? If you don't know what you are talking about then just shut the fuck up.
You get the douche bag of the day award.
PorkchopsandwichGI 3 years ago 5
yeh im with him
Jamiecollings95247 3 years ago
didn't know american cars could fly. ;P
iamquitelikyou 3 years ago
The chinook is a Canadian design
Tartrus1 3 years ago
woooow the chinook is a Canadian design? Then why does an American company (Boeing) produce and modify them. And I agree with Porkchop...you're all fucking retards, its a test to check the balances on the blades.
ak5286 3 years ago
They balance the blades in the whirl towers. We build and balance our own blades in house, and we do a damn fine job of it at that. That's one of the selling points of the Chinook. This has nothing to do with balancing the blades. It wasn't like they said "hey let's strap on a set of blades and see if they're balanced," thus sacrificing an entire airframe as a result.
indyschmidt 2 years ago
No one should " fly " with American built cars. Or foreign cars for that matter.
startreking2007 2 years ago 2
Fail
Tim52491 3 years ago
talk about shaking it
Mammoth640 3 years ago
they did this video to basically show what happens when a repair it not done correctly from what I can tell more or less
DaveStarr4 3 years ago
How do you come to that conclusion?
soupisgoodfood42 3 years ago
which comment are you refuring too
soupisgoodfood42?
DaveStarr4 3 years ago
Your one right below me. No idea why YouTube still can't get comment replies right.
soupisgoodfood42 3 years ago
hi soupisgoodfood42
oh..ok I know which one now that was supposed to be a funny comment like on that movie with the police car tied to a pole and it pulled the axle out the one above you meant the engine was not properly repaired and it causes engine failer as for youtube I don't know either
stupid ain't it
DaveStarr4 3 years ago
well I could add a funny comment to this video that would be.............ok...who's the wise guy that chained the wheel down...... ha ha ha ha
DaveStarr4 3 years ago
Fly it off
KillFrenzie 3 years ago
bit of duct tape will fix that.
redgoblin444 3 years ago 6
does anyone know the real story behind this?
yes it was a test and yes they knew what was going to happen. but i don't think they were expecting catasrophic failure...
i know cars are crashed tested (heli's too) but thats usually in the normal (more common) horizontal flight with speed scenario (to get an idea of structure failure).
this seems like a very unlikely mode of failure to have a very expensive test done.
comeone, how many times is the heli going to crash like that.....
fatmungus 3 years ago
I don't have a good reference to point you to but I'll tell you what I recall. I am probably wrong on something.
This is a likely mode of failure for helis on the ground (if it starts to happen, LIFT OFF IMMEDIATELY).
The engineers were expecting catastrophic failure, but they wanted to measure exactly when and at what loads that would occur.
This airframe was already declared unsafe to fly due to an earlier incident and was to be scrapped anyway, so they used it in this destructive test.
singedrac 3 years ago
@singedrac huh interesting
DaveStarr4 1 year ago
Sex in there? Imagin!
TillK 3 years ago
Lol... ^_^
LittleFluffyKraut 3 years ago
bit of duct tape will fix that.
mke15 3 years ago 4
i guess someone forget to tighten a bolt!
UberSynth 3 years ago
"get a room" "were already in one....SHIT!!!"
miguethekiller 3 years ago
A couple was fucking inside which got the rhythmical motion started.
robert21256 3 years ago
whoa there must be an orgy in that helicopter
harryisdumb 3 years ago 3
It's a ground resonance test, as the title said, meant to push the helicopter to the limit to see how much it can take.
KooKas2oo8 3 years ago
If the choppers a rockin, dont come a knockin.............
senorohnoes 3 years ago 4
omg
5B1 3 years ago
This comment has received too many negative votes show
those are stupid helicopters with annoying noise and they look so gay
knutfheifer 3 years ago
Not all things 'look nice' to do their job well, I point you to the A-10. It may look ugly but it's one of the best of its kind. As is the Chinook. Holds alot, well armoured for a chopper and very strategic to use.
Subarusebb 3 years ago 3
High-five that. And what's with this "looks gay" thing? It doesn't look homosexual at all. In fact, I think it looks quite beastly.
DantehMan 3 years ago
I bet you're a stupid kid who makes annoying noises and looks gay.
bigredjew 3 years ago
Aaaand I bet you're a stupid kid that'd be too afraid to admit it :)
How much are you willing to bet :D
Subarusebb 3 years ago
This comment has received too many negative votes show
It's a fake shiiit, that's all you guys need to know. Nobody wants waste a fucking millions dollar toys.
Tibly 3 years ago
shut up skwisgar
dahed118118 3 years ago
looks like a frog with a propel on its headXD
kruttsniffer 3 years ago
Speedtape, that what you need. It'll do a trip!
jetslut340 3 years ago
Speedtape, that's what you need. It'll do a trip!
jetslut340 3 years ago
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ringtonezz123 3 years ago
yeah because you guys probably dont test your shit out like we do, we care about our crewmen, and troops, if your saying that you dont test any of your shit then you are correct your small country is shit, you fail.
Ho88e5 3 years ago
Man, did you see how much the rotor blades went out of phase?! I've encountered G.Res a few times and it was corrected within a second or two by lifting up to a hover...which loads the disk and then brings the blades back into phase with each other.
CropDusterMan 3 years ago
O O 0
ITS MAKING A FACE
aconnor96 3 years ago
THE VIDEO IS NOT WORKING.
Manx123 3 years ago
if that's not a model, can models be affected by ground resonance?
Jayd3z 3 years ago
poor chopper
NIDORAX 3 years ago
what is this?
thadutchguy 3 years ago
The correct procedure when ground resonance begins is to lift the wheels off the ground.If you can`t thats what happens!
xfire7 3 years ago
The Tacoma Narrows Bridge also fell apart because of resonance
mate2000 3 years ago
The problem is the helicopter is grounded and the rotors are rotating at the frequency of the helicopter (yes everything has a resonant frequency). The ground is simply acting as a system for dampening the effects of the helicopter blade rotation. However the energy generated with the rotor blades becomes too great and the copter just falls apart
krazyazn1011 3 years ago
lol it looked like the helicopter was made of yellow foam
retsnom92 3 years ago
Houston, we have a problem !
geeselouise 3 years ago
I think one rotor failed at the head and caused a severe balance problem
kingair81r 3 years ago
that thing looks like it is made of foam
santos1991w 3 years ago
Your tax dollars hard at work.
thgr8waldopepper 3 years ago
Indeed. Sort like how your car insurance money. When it's not being spent on stupid people, it's used to buy nice shiny new cars, like Corvettes, Acuras, and Caddys. Those shiny, expensive cars are then crashed into walls at 40 Miles and Hour. It's called engineering you fucker, and you should be old enough to know that.
mgospeed31 3 years ago
This comment has received too many negative votes show
appears to be rather poorly engineered to me, you fucker. is that the best you got?
thgr8waldopepper 3 years ago
Ok first off, I spent wasted time finding what I actually said. Then I realised that it wasn't worth it to debate you because I'm tired. So I'm just going to point out the fact that it took you more than two months respond with that weak ass comeback. TWO MONTHS? If I recall, you're like 50 years old, and apparently, very daft. When they perform these tests, they push them to the max. This would happen to any aircraft, American or not. So pull your head outta your ass. It was supposed to fail.
mgospeed31 3 years ago 4
mgo i have a life, and it's not spent glued to youtube, so if you're l(.)(.)king for prompt replies, please don't hold your breath. yes, i'm over 50, and damn proud of it. how old are you, 12 perhaps? or is that your i.q.? i still say, the test was a waste of time and my hard earned tax dollars.
thgr8waldopepper 3 years ago