excellent, what a roar, sounds just like my Venturi furnace burner, why not put a pair of them on a hydroplane race boat? Strap a pair of big turbochargers on the intake pipes, like one out of a locomotive and power them through gear reduction with a 2 stroke engine, like an outboard power head of about 300 hp.
@sezurbah The air moving through a SCRAM travels faster than the speed of sound. Its not a question of the engine going supersonic, you can do that with a ramjet, but the actual air in the engine travels supersonic relative to the engine.
@sezurbah from what I understand in a ramjet the flow of air is internally slowed to less than the speed of sound and allowed to combust much in the same way that it combusts in a turbojet flame holder. In a SCRAMJET, however, the entire combustion process never drops below supersonic speed.
@Brendrimm this is some student with his camera recording an experiment, not a fucking lady gaga clip...I bet you wouldn't get much more on how this works even if you see it on IMAX
First - I know nothing about jet engines so if I make an ass of myself just ignore me.
But I was wondering something, from the comments it sounds like it couldn't be sustained, but if you don't want it to sustain itself - say in the situation of a booster engine on a car... then this would be perfect. How much airspeed do you need to get one of these to start anyway?
@PrometheusFreedom lets just say it is impossible to put it in a car. first of all it works at Mach 3 to Mach 6. so 1 Mach = 1230 kmh or 770 mph. so times that by three is the minimum speed it needs to be working. also. passing mach 1 would break the sound barrier and will cause catastrophic damage when the speed of your car passes mach 1. so yea. it would not be possible.
Wish my uni had something like that for us to research on.
@SirVladDracula well. not really. ramjet is a general category. most of them operate around Mach 3 and THEORETICALLY they can operate up to Mach 6. normal aircarft engines that are fitted onto the A380 or 787 can already go past Mach 1. But they are other issues that restrains them from going above Mach 1.
SCRAM jet is just a category of RAM jets. SCRAM jets have to be propelled by rockets to Mach 4.5 before it kicks in. and its SUPPOSED to go up to Mach 24. the last flight was last year May.
The most interesting ramjet-akin engine I've found is the Lockheed Martin J58;
since it's a normal engine up until Mach speeds, at which point it bypasses the air around the turbines and directly into the afterburner, allowing the sonic boom at the front of the engine compress the air instead of having blades do it mechanically.
I did this last year. If you're curious, it only produced about 40N of thrust. This is because the free stream velocity was (relatively) low for a ramjet (i.e. produces more thrust the faster it moves).
@EkyWeky So was that really a ramjet?? I've had lab classes with a supersonic wind tunnel and wasn't sure if the air in this video was really supersonic. Especially since, to get the shock wave strong enough to ignite fuel inside, the free stream velocity would probably have to be significantly greater than mach 1?
@whatisfloyd Yes it is a ramjet, not anything else. Ramjets still work when the flow is not supersonic; the only requirement is that the flow has to be compressible for the engine to work. Air generally becomes compressible above M = 0.3. You are right in saying that shocks can be used to ignite the fuel but it is possible for it to be ignited without one. Also, flameholders (which are after the fuel injection) help keep the flame so it doesn't blow out easily. Best wishes.
@EkyWeky I will learn more about this next semester but at this point I can't say I understand how a ramjet could possibly be self sustained without flameholders when there are no shock waves anywhere in the flow. Because the flow would be approximately isentropic throughout the system, it seems like the temperature (without flameholders) in a nozzle shaped like this would still be below the stagnation temperature as well as the fuel's ignition point. Maybe I will think differently soon though.
@whatisfloyd You're right, it can't be sustained. This one has flameholders so it doesn't blow out. They didn't teach me much about the fuel ignition point but I would guess and say that after compression the air was hot enough for fuel ignition to occur.
@EkyWeky Oh okay, I guess I was just thinking more of the classic self-sustained ramjet. I was just guessing using my knowledge of isentropic flow formulas. Although we used them a lot in that class, my professor did tell us that it was only an approximation. I just thought that it was fairly accurate. I'm referring to To/T=1+.2(M^2) which, without a shock wave present, would leave the static temperature at a lower value than the ambient temperature.
@EkyWeky But then again, maybe the assumption that the reservoir temperature is equal to the temperature at sea level isn't accurate either. I'll shut up now! I will just look forward to learning more about it.
@whatisfloyd Haha. It's always good to be curious. Anyway, I think you're thinking about it too much. If you don't know about it already, perhaps take a look at how the ramjet follows the Brayton cycle and its respective temperature vs. entropy (T-s) plot. To me, it gives a clear picture how they both vary at different stages of the engine (i.e. diffuser-combustor-nozzle) and thus tells you when and where you can use the isentropic flow equations. Don't hesitate if you have any more questions.
@EkyWeky Sooo my professor says ramjets don't work until you're around the range of mach 2. My guess is that this one may technically be one but produces VERY little thrust
@whatisfloyd He is right. From what I've read, I believe there is no ignition in the engine itself, but the high pressure instantaneously ignited the fuel. Just google ramjets, there is probably a better explanation of this.
@xBiocide The mechanism that makes ramjet engines work is the temperature increase across a shock wave, which requires supersonic speeds.
Assuming the [subsonic] flow is approximately isentropic before the burner/flameholder, (meaning no heat is introduced, in this case due to friction between the air and the engine's surface) then the higheset factor by which the temperature can increase by is ~20%.
Either there is some type of igniter inside or I am greatly underestimating viscous effects.
@seraphean40 Well > mach 1 is all you need in order to form a normal or oblique shock wave but the temperature increase typically isn't great enough to oxidize fuel until you begin approaching mach 2. The temperature ratio across a shock that weak would be barely over 1 if the mach number is just over 1.
This brings back memories! it's in a dank little room, at the end of a dark corridor in the sub levels of the aerospace building..where all the real work gets done!
it would be better if you built it smaller like the size of a water bottle or mabey the size of pen cap and cove the surface of an aircraft or mabey a iron man like suit ha ha wishfull thinking
@laxinitup62 In the case if jet engine, like normal aeriplane engines, it sucks in air at high speed for fuel combustion. But in the case of ramjet or scramjet, the oxygen producing material is carried with it.
@MaxiBoOoY Dont mean to blow your bubble, but maybe they are the students that helped design it or yea, im sure its fair to say they could be retarded heavy metal junkies who just happened to stop by a ramjet lab. Lmao, how stupid this world is getting.
@MrTacos147 You cannot get sucked into a ramjet; They are made to be accelerated to a certain velocity, THEN ignited. This "Starting Velocity" is about 2.5 mach, or 2.5 times sound speed. Scramjets are similar in the concept that they can't suck things in, however, they require a minimum of about 4.5 mach to operate. But, if you'd stand behind one of those, don't expect to be turning into much more than cinder and ash.
Awwww.....look at these guys....they just "rediscovered" the "Air Foil". I got one of these in my garage. It's called a jet heater! Works great for heating large rooms when it's cold outside.
@Allexxx96Reloaded Ramjet is essentially a combination of diffuser, combustion chamber and nozzle. The compression and expansion are done in a purely aerodynamical manner so no moving parts which may be found in jet engines (turbines and compressors) are necessary. In full-scale applications variable area nozzles etc. might be utilised but the enngine you can see on this video is literally just a metal tube with variable cross-section and a fuel injection and mixing system (which doesn't move).
Is it possible to create an air flow with speed greater than 1Mach in a lab?? Ramjets engines require incoming air speed higher than 1 Mach in order to work. The incoming air goes into the combustion chamber, ignites along with the fuel and comes out of the engine with 2-3 Mach speed. That's the basic philosophy of the Ramjet
@dslandrey not true. ramjets have been used at speeds as low as 87 knots (about 100 mph). they're very inefficient at this speed, but as long as they've got sufficient headwind they'll work (they cannot start at 0 wind-speed)
@dslandrey you're talking about a scramjet. those are what use supersonic airflow through the entire engine system (scramjet is an acronym for Supersonic Combustion Ramjet)
@dslandrey In 1939, Merkulov did further ramjet tests using a two-stage rocket, the R-3. In August of that year, he developed the first ramjet engine for use as an auxiliary motor of an aircraft, the DM-1. The world's first ramjet powered airplane flight took place in December 1939, using two DM-2 engines on a modified Polikarpov I-15. (Wikipedia)
@dslandrey , It is not true. In 1939, Merkulov did further ramjet tests using a two-stage rocket, the R-3. In August of that year, he developed the first ramjet engine for use as an auxiliary motor of an aircraft, the DM-1. The world's first ramjet powered airplane flight took place in December 1939, using two DM-2 engines on a modified Polikarpov I-15. (Wikipedia)
@deaftodd chuck norris is supposed to be the most badass guy in the entire universe so people make jokes about that but unlike other stupid stuff that gets reposted on youtube this particular one requires a little bit of imagination and is really funny
@BillyBonesucker This is absolutley horrible, and they want to charge us a carbon tax because we are polluting the air with their crazy ass Methane bombs they keep dropping in the ozone. Yeah blame it on the cows.
Im guessing your forcing air in through the front hole "unlike the turbojet with its own compressor". Is it just a combustion chamber with a hole at each end, im also guessing the hole diameter of the rear hole is greater than the front which subsequently has an effect on the combustion flow??????
@digimaster88 As mater approaches the speed of light it becomes infinitely dense, requiring infinite energy to accelerate further. Even light doesn't like going faster then the speed of light, instead time has to slow down to accommodate it.
The sad thing is that all the brains, intellect, potential, and talent from the best universities are going to be used to create more weapons and new ways for us to kill each other.
Gentlemans, history is on your hands now. that dreams come true...
carloshenrys2 4 days ago
woo for aerospace at southampton!
rickrollification 1 week ago
Too bad it only starts working at mach 2.
CockatooDude 2 months ago
America flies prototypes.
We build a model in room.
benitofinito 2 months ago
chuck norris' butane lighter
superbungabunga 2 months ago
Chuck Norris' hair drier ???....
KarpatycGhost 2 months ago
rad
dumdumdiddy100 3 months ago
Me-262 engine?
How many hot dogs do you cook per day?
diegomifits666 3 months ago
Cant decide if it sucks or blows.
watzupdawg 3 months ago
wth is this?
MrGlenntipton 3 months ago
whats the freestream velocity?
carsdankandchicks 3 months ago
i need that to light my zoot
choongification 4 months ago
excellent, what a roar, sounds just like my Venturi furnace burner, why not put a pair of them on a hydroplane race boat? Strap a pair of big turbochargers on the intake pipes, like one out of a locomotive and power them through gear reduction with a 2 stroke engine, like an outboard power head of about 300 hp.
UGLandrum 4 months ago
i can make that at homw weak
sertox12345 5 months ago
did you guys figure out how much thrust it was producing?
phil656565 5 months ago
This is very loud for its size.
BLynchCAN 5 months ago
at Josha, good work
PS2djX 5 months ago
Sounds a bit like the V1 at times.
BLynchCAN 5 months ago
@BLynchCAN V1 do strong motor noise
PS2djX 5 months ago
can knowing what is oxidizer and what is fuel / combustible ?
PS2djX 5 months ago
@PS2djX the oxidizer is likely...oxygen, from the air. The fuel most likely kerosene or hydrogen.
Helge129 5 months ago
@PS2djX Or propane.
Helge129 5 months ago
what hapends if i touch it ?
ILOVEFIATBRAVA 5 months ago
This has been flagged as spam show
I like how the highest rated comment is just a rip-off of the second highest rated comment
EvilRobin1 5 months ago
what is the thrust?
Klause5425 5 months ago
another british invention
kopynd1 5 months ago
@kopynd1 ? Thats not correct...
cobrala 5 months ago
@kopynd1 britannia rules the waves silly... or is it the other way around? i can never remember
it IS true that when the P-51 mustang got the upgrade to the Merlin engine it became a truly awesome plane. the first joint strike fighter.
artofnick 5 months ago
HMMM they must have great insurence
jake22481 5 months ago
i can almost feel the pressure.
godslayer137 5 months ago
Their should be like a giant gasoline pipeline that shoot off into space.
omega4chimp 5 months ago
OH YEAH POD RACE HERE I COME!!!
PeanutsAnDEgO 6 months ago
can someone please describe the difference between SCRAM and RAM jets. apart from the opperating speed
sezurbah 6 months ago
Comment removed
93tomb 5 months ago
This has been flagged as spam show
@sezurbah The air moving through a SCRAM travels faster than the speed of sound. Its not a question of the engine going supersonic, you can do that with a ramjet, but the actual air in the engine travels supersonic relative to the engine.
93tomb 5 months ago
@sezurbah from what I understand in a ramjet the flow of air is internally slowed to less than the speed of sound and allowed to combust much in the same way that it combusts in a turbojet flame holder. In a SCRAMJET, however, the entire combustion process never drops below supersonic speed.
htomerif 5 months ago
fuel / propellant ?
PS2djX 6 months ago
Oh shit the Arabs are behind the camera?
joshers93 6 months ago
OH 240P WE MEET AGAIN...
Brendrimm 6 months ago 64
@Brendrimm oh 240p comment we meet again
Asator66 2 months ago 5
@Brendrimm
Oh another comment follower we meet again. Come up with ur own comments
video was uploaded more then 3 years ago from a 3 year ago no shit its 240 p.
oooanthonyooo 2 months ago
@Brendrimm this is some student with his camera recording an experiment, not a fucking lady gaga clip...I bet you wouldn't get much more on how this works even if you see it on IMAX
Jer1cho91 1 week ago
do they offer jobs associated with this ? ramjet technitions ?
laxinitup62 6 months ago
@coolveek ramjets are still far to much behind being capable if star wars tech
Mrcoolguy1987654 6 months ago
That's great!!! Now, let's build Star Wars vehicles!!!
coolveek 6 months ago
That's great!!! Now, let's build Star Wars vehivles!!!
coolveek 6 months ago
Its chuck norris's lighter
Foqerman 6 months ago
For all the funding this costs couldn't you have bought atleast a decent video camera?
chaterbox0 6 months ago
now i understand how its like a match in a hurricane...
jesuswasblack00 6 months ago
I think one of them just stuck a couple soup cans on it and put a fuel line in...
SodomGomorrahWaDC 6 months ago
is that ODU
number1airsoftsniper 6 months ago
Just like my mom's hair dryer. : )
Aktivebomb 7 months ago
My father made a ram jet at school. In assembly the headmaster asked to know if anyone knew where 437 aluminium chairs had gone :o)
3Deity 7 months ago
mine goes up to 11.
3Daver 7 months ago
a friend of mine built one running on propane in his backyard which generates the necessairy suction by an explosive ignition...the guy is insane o0
JOBGG16 7 months ago
pull out the marshmellows i say!
jameslove6 7 months ago 33
@jameslove6 you'd have to just run by the flame really fast, otherwise it would just completely get evaporated =O
qpSubZeroqp 3 months ago
low tak.....wake up
foogy4 7 months ago
First - I know nothing about jet engines so if I make an ass of myself just ignore me.
But I was wondering something, from the comments it sounds like it couldn't be sustained, but if you don't want it to sustain itself - say in the situation of a booster engine on a car... then this would be perfect. How much airspeed do you need to get one of these to start anyway?
PrometheusFreedom 7 months ago
@PrometheusFreedom lets just say it is impossible to put it in a car. first of all it works at Mach 3 to Mach 6. so 1 Mach = 1230 kmh or 770 mph. so times that by three is the minimum speed it needs to be working. also. passing mach 1 would break the sound barrier and will cause catastrophic damage when the speed of your car passes mach 1. so yea. it would not be possible.
Wish my uni had something like that for us to research on.
peanutzz89 7 months ago
@peanutzz89 Don't hate me if I get this wrong; but:
I thought that RAM jets worked from Mach 1 to Mach 3; after which the jet can't keep up.
Hence the invention of SCRAM jets - or Supersonic Combustion RAM jet, which works from Mach 3 onwards, and into Hypersonic speeds.
SirVladDracula 7 months ago
@SirVladDracula well. not really. ramjet is a general category. most of them operate around Mach 3 and THEORETICALLY they can operate up to Mach 6. normal aircarft engines that are fitted onto the A380 or 787 can already go past Mach 1. But they are other issues that restrains them from going above Mach 1.
SCRAM jet is just a category of RAM jets. SCRAM jets have to be propelled by rockets to Mach 4.5 before it kicks in. and its SUPPOSED to go up to Mach 24. the last flight was last year May.
peanutzz89 7 months ago
@peanutzz89 Fair enough!
The most interesting ramjet-akin engine I've found is the Lockheed Martin J58;
since it's a normal engine up until Mach speeds, at which point it bypasses the air around the turbines and directly into the afterburner, allowing the sonic boom at the front of the engine compress the air instead of having blades do it mechanically.
SirVladDracula 7 months ago
Bunsen burners are bigger than they were in my day.
Nilguiri 7 months ago
whow.. don't dis Chuck.. Are you crazy? He knows you and is knocking at your door right now. ROUNDHOUSE KICK!
SMPTEflorida 7 months ago
I did this last year. If you're curious, it only produced about 40N of thrust. This is because the free stream velocity was (relatively) low for a ramjet (i.e. produces more thrust the faster it moves).
EkyWeky 7 months ago
@EkyWeky So was that really a ramjet?? I've had lab classes with a supersonic wind tunnel and wasn't sure if the air in this video was really supersonic. Especially since, to get the shock wave strong enough to ignite fuel inside, the free stream velocity would probably have to be significantly greater than mach 1?
whatisfloyd 7 months ago
@whatisfloyd Yes it is a ramjet, not anything else. Ramjets still work when the flow is not supersonic; the only requirement is that the flow has to be compressible for the engine to work. Air generally becomes compressible above M = 0.3. You are right in saying that shocks can be used to ignite the fuel but it is possible for it to be ignited without one. Also, flameholders (which are after the fuel injection) help keep the flame so it doesn't blow out easily. Best wishes.
EkyWeky 7 months ago
@EkyWeky I will learn more about this next semester but at this point I can't say I understand how a ramjet could possibly be self sustained without flameholders when there are no shock waves anywhere in the flow. Because the flow would be approximately isentropic throughout the system, it seems like the temperature (without flameholders) in a nozzle shaped like this would still be below the stagnation temperature as well as the fuel's ignition point. Maybe I will think differently soon though.
whatisfloyd 7 months ago
@whatisfloyd You're right, it can't be sustained. This one has flameholders so it doesn't blow out. They didn't teach me much about the fuel ignition point but I would guess and say that after compression the air was hot enough for fuel ignition to occur.
EkyWeky 7 months ago
@EkyWeky Oh okay, I guess I was just thinking more of the classic self-sustained ramjet. I was just guessing using my knowledge of isentropic flow formulas. Although we used them a lot in that class, my professor did tell us that it was only an approximation. I just thought that it was fairly accurate. I'm referring to To/T=1+.2(M^2) which, without a shock wave present, would leave the static temperature at a lower value than the ambient temperature.
whatisfloyd 7 months ago
@EkyWeky But then again, maybe the assumption that the reservoir temperature is equal to the temperature at sea level isn't accurate either. I'll shut up now! I will just look forward to learning more about it.
whatisfloyd 7 months ago
@whatisfloyd Haha. It's always good to be curious. Anyway, I think you're thinking about it too much. If you don't know about it already, perhaps take a look at how the ramjet follows the Brayton cycle and its respective temperature vs. entropy (T-s) plot. To me, it gives a clear picture how they both vary at different stages of the engine (i.e. diffuser-combustor-nozzle) and thus tells you when and where you can use the isentropic flow equations. Don't hesitate if you have any more questions.
EkyWeky 7 months ago
@EkyWeky Sooo my professor says ramjets don't work until you're around the range of mach 2. My guess is that this one may technically be one but produces VERY little thrust
whatisfloyd 4 months ago
@whatisfloyd Yeah, that's right. Only produced 40N of thrust, like I said in my first comment.
EkyWeky 4 months ago
@whatisfloyd He is right. From what I've read, I believe there is no ignition in the engine itself, but the high pressure instantaneously ignited the fuel. Just google ramjets, there is probably a better explanation of this.
xBiocide 4 months ago
@xBiocide The mechanism that makes ramjet engines work is the temperature increase across a shock wave, which requires supersonic speeds.
Assuming the [subsonic] flow is approximately isentropic before the burner/flameholder, (meaning no heat is introduced, in this case due to friction between the air and the engine's surface) then the higheset factor by which the temperature can increase by is ~20%.
Either there is some type of igniter inside or I am greatly underestimating viscous effects.
whatisfloyd 3 months ago
@whatisfloyd i belive it will work at minimum speed of mach 1+ :) not at minimum of mach 2
seraphean40 3 months ago
@seraphean40 Well > mach 1 is all you need in order to form a normal or oblique shock wave but the temperature increase typically isn't great enough to oxidize fuel until you begin approaching mach 2. The temperature ratio across a shock that weak would be barely over 1 if the mach number is just over 1.
whatisfloyd 3 months ago
just but a j-53
foogy4 7 months ago
but will it blend?
RauL8604 8 months ago
жаровня для шаурмы
shampysik 8 months ago
chuck norris called. he wants his lighter back
thekingsora 8 months ago
This brings back memories! it's in a dank little room, at the end of a dark corridor in the sub levels of the aerospace building..where all the real work gets done!
reshad1 8 months ago
it would be better if you built it smaller like the size of a water bottle or mabey the size of pen cap and cove the surface of an aircraft or mabey a iron man like suit ha ha wishfull thinking
Turtle666 8 months ago
@skeatesy1 Get back into the kitchen... and make me a sandwich!
Uunster 8 months ago
I love the hair dryer comment. Funny as!
danielatino100 8 months ago
Title= How students make toast
Films4You 8 months ago
all I want to know is that, how fast will it cook my mashmallow!
kCharng 8 months ago
Thats not Chucks hair dryer, it's his ciggy lighter!
therealshlong 8 months ago
@therealshlong chuch norris dusnt need to light his ciggy, he looks at the ciggy and is starts to burn ! xD
apia13 8 months ago
what air speed it starts to work?
Kimre73 8 months ago
This is nothing compared to Chuch Norris' farts.
TheJurgenkalis 8 months ago
why is both the top rated comment about CHUCK NORRIS, he got nothing to do with RamJets!!!
jainish007 8 months ago
Anyone got a light? :P
LordShivasServant 8 months ago
that's chuck norris's cigarette lighter
silversnke04 9 months ago
i got a question: why is it blue?
noshsd 9 months ago
@noshsd
Most likely the ramjet is fueled with methane and burning methane with a surplus of oxygen make the flame blue (like a Bunsen burner).
xuser48 9 months ago
@xuser48 ah :D thank you
noshsd 8 months ago
I like how the highest rated comment is just a rip-off of the second highest rated comment
RedemtionInABox 9 months ago 46
@RedemtionInABox ROFL, ppl are idiots
KaB0m 9 months ago
Chuck Norris's mother just called and said stop the feckin Norris jokes otherwise she going go Jacie Chan on all your asses
LondonForever75 9 months ago
whats the difference between a scramjet and a jet engine ?
laxinitup62 9 months ago
@laxinitup62 In the case if jet engine, like normal aeriplane engines, it sucks in air at high speed for fuel combustion. But in the case of ramjet or scramjet, the oxygen producing material is carried with it.
chatterjeemilan 9 months ago
Not very loud. Would have expected more from something like this.
BankaiIchigo12345 9 months ago
you knew there was going to be a chuck norris comment on this video
tammer14 9 months ago
I wonder what the surface temperature is . And the back blast temperature.
Brommes 9 months ago
and alway bunch of retards standing there watching, mostly all into heavy metal music.....lmao, how gay this world is getting.
MaxiBoOoY 9 months ago
@MaxiBoOoY Dont mean to blow your bubble, but maybe they are the students that helped design it or yea, im sure its fair to say they could be retarded heavy metal junkies who just happened to stop by a ramjet lab. Lmao, how stupid this world is getting.
Dosullivan11 9 months ago
I wonder what the thrust to weight ratio of that little motor is???
CSXer 10 months ago
This has been flagged as spam show
The relativ atom mass is to handel with (g/mol=x*10^-36) for the exactly molecularmass and so the exactly ratio.
Example: The molecular mass divide by the number of atoms and then to ratiomasses you want.
getdown1983 10 months ago
american and other scientists will laugh at this backyard workshop type of lab.
brssgirl 10 months ago
loook the big bang theory, crew is on youtube!!! LAO
FelixRivasO 10 months ago
i have that on the back of my bat mobile
slickster3211 10 months ago
WOW ! Dynamic compression....
shashair 10 months ago
This has been flagged as spam show
what happens if i start chukin rocks into it?
FFNiXX 10 months ago
how much thurst did it generate?
fffeeerrr06 10 months ago
Bring it over and I could cook me a hot dog on there!
TheRealDealinlife 10 months ago
what are some applications for these? also in this example what would be the thrust?
iammrprince 10 months ago
what would happen if someone got sucked into a ramjet?
MrTacos147 10 months ago
@MrTacos147 You cannot get sucked into a ramjet; They are made to be accelerated to a certain velocity, THEN ignited. This "Starting Velocity" is about 2.5 mach, or 2.5 times sound speed. Scramjets are similar in the concept that they can't suck things in, however, they require a minimum of about 4.5 mach to operate. But, if you'd stand behind one of those, don't expect to be turning into much more than cinder and ash.
destrierofdark 10 months ago
@MrTacos147
Whats your best guess? lol
Armigo91 10 months ago
Holy tentacle porn batman!
Aspire198 10 months ago 2
will it blend. that is the question
roblox808 11 months ago
If you guys ever get bored of that test rig and want to get rid of it I'm only a pm away ;)
QRAclub 11 months ago
what kind of payload could that lift
TelfLad 11 months ago
Amazing : )
sandplasma 11 months ago
Awwww.....look at these guys....they just "rediscovered" the "Air Foil". I got one of these in my garage. It's called a jet heater! Works great for heating large rooms when it's cold outside.
thebadguy2k6 11 months ago
Been there, done that :) Good stuff and lots of fun. Having a bloody ramjet running a couple metres away is a really wierd but enjoyable feeling.
Enterokinazool 11 months ago
no moving parts?
Allexxx96Reloaded 11 months ago
@Allexxx96Reloaded Ramjet is essentially a combination of diffuser, combustion chamber and nozzle. The compression and expansion are done in a purely aerodynamical manner so no moving parts which may be found in jet engines (turbines and compressors) are necessary. In full-scale applications variable area nozzles etc. might be utilised but the enngine you can see on this video is literally just a metal tube with variable cross-section and a fuel injection and mixing system (which doesn't move).
Enterokinazool 11 months ago
excellent stuff.
Checkout my channel for jet engine related video clips that've filmed through the years.
ArcturanMegadonkey 11 months ago
what fuel is it using?
Fourteen88SoCal 1 year ago
Very impressive!
pettyofficer30 1 year ago
mach lab speed test?
apostolisxa 1 year ago
nice work guys....
dilshan3d 1 year ago
that ramjet + scooter = what marvin the martian drove around on...
hurbt1980 1 year ago
lol,thanks for the blue color,u can see inside something like a fan but only that is not mooving :))
maxhasis 1 year ago
Is it possible to create an air flow with speed greater than 1Mach in a lab?? Ramjets engines require incoming air speed higher than 1 Mach in order to work. The incoming air goes into the combustion chamber, ignites along with the fuel and comes out of the engine with 2-3 Mach speed. That's the basic philosophy of the Ramjet
dslandrey 1 year ago
@dslandrey not true. ramjets have been used at speeds as low as 87 knots (about 100 mph). they're very inefficient at this speed, but as long as they've got sufficient headwind they'll work (they cannot start at 0 wind-speed)
jonjoy1999 1 year ago
@dslandrey you're talking about a scramjet. those are what use supersonic airflow through the entire engine system (scramjet is an acronym for Supersonic Combustion Ramjet)
jonjoy1999 1 year ago
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@jonjoy1999 yeah.... i think i was talking about this one
dslandrey 1 year ago
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@dslandrey In 1939, Merkulov did further ramjet tests using a two-stage rocket, the R-3. In August of that year, he developed the first ramjet engine for use as an auxiliary motor of an aircraft, the DM-1. The world's first ramjet powered airplane flight took place in December 1939, using two DM-2 engines on a modified Polikarpov I-15. (Wikipedia)
Iseedegradation 1 year ago
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@dslandrey , It is not true. In 1939, Merkulov did further ramjet tests using a two-stage rocket, the R-3. In August of that year, he developed the first ramjet engine for use as an auxiliary motor of an aircraft, the DM-1. The world's first ramjet powered airplane flight took place in December 1939, using two DM-2 engines on a modified Polikarpov I-15. (Wikipedia)
Iseedegradation 1 year ago
thats chuck norris's hair drier
GrowlingVocals 1 year ago 213
@GrowlingVocals lmao
EndofDays213 11 months ago
@GrowlingVocals What's up with all that Chuck Norris comments on everywhere? What's so great about him?
deaftodd 10 months ago
@deaftodd chuck norris is supposed to be the most badass guy in the entire universe so people make jokes about that but unlike other stupid stuff that gets reposted on youtube this particular one requires a little bit of imagination and is really funny
GrowlingVocals 10 months ago
@GrowlingVocals the sun is chuck norris's bbq grill and pluto is his refrigerator.
45Mang 9 months ago
@GrowlingVocals poser FAIL
mattymanten 8 months ago
@mattymanten go fuck your mom bitch :)
GrowlingVocals 8 months ago
@GrowlingVocals ahahahhahahahahahahahahaha LoL XD
AlboSTI 7 months ago
i think methane engines can reach the highest thrust ... nasa is testing one and it is reaching about 7500 pounds of thrust! its awesome, isnt it?
BillyBonesucker 1 year ago
@BillyBonesucker This is absolutley horrible, and they want to charge us a carbon tax because we are polluting the air with their crazy ass Methane bombs they keep dropping in the ozone. Yeah blame it on the cows.
bakothegreat 1 year ago
old school
Ryzler13 1 year ago
I think she's runnin a little rich lol
piecartbox 1 year ago
Im guessing your forcing air in through the front hole "unlike the turbojet with its own compressor". Is it just a combustion chamber with a hole at each end, im also guessing the hole diameter of the rear hole is greater than the front which subsequently has an effect on the combustion flow??????
97Arran 1 year ago
JEAH !!!!! BLUE FIRE !
DornAlien123 1 year ago
by how much do the thrust differ when a De-Laval nozzle is used, instead of only a divergent nozzle??? plz reply asap!!!
hitokiriaritra 1 year ago
chuck norris called. he wants his hair dryer back.
AzNtacoSAUCE 1 year ago 67
cool
MultiPatriote 1 year ago
i'd like to have a BBQ like that !!!
sjmunoz 1 year ago
how come they havent made anything go light speed yet? its almost 2011 and theres no such thing as we havnt got that technology yet
digimaster88 1 year ago
@digimaster88 Use google. And you might find out that nothing may travel at the speed of light. Before asking questions, do some research.
ivhual 1 year ago
@ivhual there are actually certain particles which disintegrate when they slow down to the speed of light - do more research
AndrewManche 1 year ago
@AndrewManche Yes thank you for adding that. However tachyons etc. haven't yet been proven? It's a hypothetical particle.
ivhual 1 year ago
@digimaster88 As mater approaches the speed of light it becomes infinitely dense, requiring infinite energy to accelerate further. Even light doesn't like going faster then the speed of light, instead time has to slow down to accommodate it.
mryellow123 1 year ago
@mryellow123 That is why you warp space to get over that annoying little law.
KroniclyHigh 1 year ago
i want that on my car
Faqural831 1 year ago
WANK....!
kitingboarding 1 year ago
The sad thing is that all the brains, intellect, potential, and talent from the best universities are going to be used to create more weapons and new ways for us to kill each other.
The only use a ramjet would have is for missiles.
welhungjohnson 1 year ago
HIgh what kind of fuel are you burning? Flame blue with white is telling extremely high energy and high temperature?
Do you say that was subsonic speed?
What is the diference with Boing Jets. That one does have a turbine?
mero731 1 year ago
Hey, nice work! Can we fit that on an remote controlled model?
TolisOnLine 1 year ago