Just wondering, since jet engines have rotors that turn at high revolutions, do they then produce torque in opposite directions like prop engines?

No turbine experience here, but I would guess no.I do believe there may be more gyroscopic tendencies though with big metal things spinning at extremely high RPMs. I believe I read somewhere that the gyroscopic forces in some situations (full power, full rudder yawing) could be strong enough to rip an engine off, but I don't know if that was hype.I'm curious to see what the real turbine pilots will say. Good question.Lee Hetherington (KBED)

Well if anyone remembers AA587 that went down in a neighborhood near JFK back in '01, I do believe that at least one of the engines was reported to have separated from the wing as the plane went down. I remember reading somewhere that the black box indicated the rudder was fully deflected just before the plane got into trouble. So in this situation there was fully rudder deflection at very high thrust since the aircraft had just taken off. Perhaps this confirms what Lee said?Ryan

Hi all,Yeah, they have torque, but usually the torque induced by the turning fans and turbines is lost due to being very low in magnitude in comparison with the mass of the general aircraft, but there is one aircraft that I know of having torque effects, being a jet driven fighter, it's the F-104, due to the short wings and bassically being a big jet engine surrounded by a few metal parts and a flesh one ;-)We had it in our Air Force (Spain) and once talked with one pilot that told me that when going from IDLE to MAX DRY you could notice a small torque effect in te plane, and viceversa, at reducing from MAX DRY to IDLE the same, in between positions was not noticeable.RegardsHarry

Generally speaking, no.The only time I have found it at all noticeable was when I was instructing in the military on a single engine jet trainer. If you got very slow over the top of a loop with the engine a high thrust you could notice a very slight torque effect but that is the only time in many thousands of tubojet/turbofan hours that I have noticed it.Kevin in CYOW

Interesting, I've always wondered about this. I think if I understand by what I've read so far is that yes, jet's produce torque, but the torque effects are generally damped out by the aerodynamic properties of the jet. Does this sound about right to you guys? Thanks!

>I remember reading somewhere>that the black box indicated the rudder was fully deflected>just before the plane got into trouble. Actually saw a documentary on the accident/crash - RUDDER REVERSAL is what it was called.DS CVA3339 / UKD149System: Attlon 900 McW Hamster/Gerbilized Quantum Accessible 55Gig Iodized-Encrusted Four-poster with Mega-brill Farzenhuuven http://vatsim.pilotmedia.fi/statusindicato...tor=OD1&a=a.jpg

The engines on the PA28's I fly are mounted to off center and pointed to the right a few degrees to compensate for asymetric thrust. Do the engines on the M/E Jet aircraft do the same? Are they mounted on the wings perpendicular to the fuselage or offset?

If you mean, do they produce a "torque effect" like prop engines, the answer is no. The rotors inside a turbine are offset by a fan blade called a stator. (see un high-tech graphic below)R=rotor, S=stator/ / / / / / / ---------/ ----> --------- ----> Thrust/ / / / / / / R S R S Rotors turn, stators don't. As the turbine gets smaller and smaller, th same mass of air gets forced through to produce thrust. The twisting force isn't what drives a jet,it's the air being pushed.The reason propeller driven aircraft (and helicopters!) have torque effect is because the props, (rotors) move through the air in one direction. A tail rotor, on a helo cancels this movement out.Remember Newton: For every action, there is an equal and oppisite reaction...I hope this is what you were looking for.