can reverse thrust work to prevent a plane crash?
Q. say if there's engine problem, out of fuel, plane going out of control, etc. if there's a powerful reverse thrust or a nuclear boom in the opposite direction to stunt the drop, can it slow down the plane enough to cause less damage and prevent a total loss crash? basically, my idea is something powerful enough to pull the plane to the sky to slow down to drop when it hits the ground. im a novice to a plane. lol
Asked by Jonathan - Mon Apr 13 21:04:05 2009 - - 6 Answers - 0 Comments
A. Yes if a plane is about to hit the ground but then suddenly a nuclear bomb goes off right in front of them. all the passengers and the plane will be perfectly fine... (that was sarcastic) No say you put engines facing the opposite direction it would do absolutly nothing. 1. Most plane engines only work when you are moving (in the correct direction). otherwise no air gets into the turbines so no reverse thrust. 2. A plane weighs A LOT, its weight is unimaginable, have you seen how long it takes for a passenger plane to take off? Imagine how long it would take to take off when it was travelling at 1000km/h in the opposite direction AND in the opposite direction to gravity.
Answered by Lee - Mon Apr 13 21:09:56 2009
Q. say if there's engine problem, out of fuel, plane going out of control, etc. if there's a powerful reverse thrust or a nuclear boom in the opposite direction to stunt the drop, can it slow down the plane enough to cause less damage and prevent a total loss crash? basically, my idea is something powerful enough to pull the plane to the sky to slow down to drop when it hits the ground. im a novice to a plane. lol
Asked by Jonathan - Mon Apr 13 21:04:05 2009 - - 6 Answers - 0 Comments
A. Yes if a plane is about to hit the ground but then suddenly a nuclear bomb goes off right in front of them. all the passengers and the plane will be perfectly fine... (that was sarcastic) No say you put engines facing the opposite direction it would do absolutly nothing. 1. Most plane engines only work when you are moving (in the correct direction). otherwise no air gets into the turbines so no reverse thrust. 2. A plane weighs A LOT, its weight is unimaginable, have you seen how long it takes for a passenger plane to take off? Imagine how long it would take to take off when it was travelling at 1000km/h in the opposite direction AND in the opposite direction to gravity.
Answered by Lee - Mon Apr 13 21:09:56 2009
Is there reverse thrust on a turboprop?
Q. Self-explanatory. Since jet turbines are capable of reverse thrust, and turboprops are basically turbines with a prop on the front, would a turboprop be capable of reverse thrust? And if so, is that why turboprops are supposed to have shorter TOL distances than radials?
Asked by Patrick - Fri Mar 12 13:33:43 2010 - - 5 Answers - 0 Comments
A. Most turboprop engines have reverse thrust, but not all. Some piston engines have reverse thrust, but not very many in the modern era. Either way, the operating principle is different than a jet engine's reverse thrust. On a jet, doors deploy to block the thrust and redirect it forward. On a turboprop, the propeller blades flip direction and generate reverse thrust.
Answered by N419BH - Fri Mar 12 14:33:50 2010
Q. Self-explanatory. Since jet turbines are capable of reverse thrust, and turboprops are basically turbines with a prop on the front, would a turboprop be capable of reverse thrust? And if so, is that why turboprops are supposed to have shorter TOL distances than radials?
Asked by Patrick - Fri Mar 12 13:33:43 2010 - - 5 Answers - 0 Comments
A. Most turboprop engines have reverse thrust, but not all. Some piston engines have reverse thrust, but not very many in the modern era. Either way, the operating principle is different than a jet engine's reverse thrust. On a jet, doors deploy to block the thrust and redirect it forward. On a turboprop, the propeller blades flip direction and generate reverse thrust.
Answered by N419BH - Fri Mar 12 14:33:50 2010
Is reverse thrust always used When slowing down?
Q. I mean its one less thing to fiddle with?
Asked by The Dude - Sun Jun 1 20:48:34 2008 - - 6 Answers - 0 Comments
A. Reverse Thrust augments aircraft brakes, thereby increasing the life of the brakes and tyres. It makes sense to use it on all landings (even at the cost of one more thing to fiddle with) unless exceptionally long runways exist where the aircraft will slow down on its own without use of brakes.
Answered by Avrilfan - Mon Jun 2 06:57:42 2008
Q. I mean its one less thing to fiddle with?
Asked by The Dude - Sun Jun 1 20:48:34 2008 - - 6 Answers - 0 Comments
A. Reverse Thrust augments aircraft brakes, thereby increasing the life of the brakes and tyres. It makes sense to use it on all landings (even at the cost of one more thing to fiddle with) unless exceptionally long runways exist where the aircraft will slow down on its own without use of brakes.
Answered by Avrilfan - Mon Jun 2 06:57:42 2008
How does reverse thrust work on a jet engine?
Q. How does reverse thrust work on a jet engine?
Asked by Myke - Sat Nov 25 14:24:07 2006 - - 6 Answers - 0 Comments
A. When the pilot activates reverse thrust, the engines exhaust gasses are redirected to blow forwards. AAThis acts as a brake. On some aircraft panels swing in front of the exhaust of the engine, others doors open on the cowling and the engines bypass is redierected
Answered by rabbit - Sun Nov 26 00:32:08 2006
Q. How does reverse thrust work on a jet engine?
Asked by Myke - Sat Nov 25 14:24:07 2006 - - 6 Answers - 0 Comments
A. When the pilot activates reverse thrust, the engines exhaust gasses are redirected to blow forwards. AAThis acts as a brake. On some aircraft panels swing in front of the exhaust of the engine, others doors open on the cowling and the engines bypass is redierected
Answered by rabbit - Sun Nov 26 00:32:08 2006
Reverse thrust on landing aircraft. How does this actually work?
Q. Reverse thrust on landing aircraft. How does this actually work?
Asked by grafter - Wed Jan 17 13:15:47 2007 - - 11 Answers - 0 Comments
A. There are a couple of different ways that reverse thrust works. For jet engines, the principle is the same. Some have "buckets" which was mentioned previously. These "buckets" fold back behind the engine exhaust and redirect the exhaust air forward. Instead of thrust being used to move the aircraft forward, it is redirected to slow the aircraft down. Another type involves redirecting bypass air. A lot of the air that enters a jet intake is used for cooling. A relatively smaller percentage of intake air is actually used for combustion. The bypass air can be redirected forward using the same principle as stated above. The difference is that the air never makes it to the back (aft) side of the engine. There are "blocking doors" that… [cont.]
Answered by jrc - Wed Jan 17 15:29:20 2007
Q. Reverse thrust on landing aircraft. How does this actually work?
Asked by grafter - Wed Jan 17 13:15:47 2007 - - 11 Answers - 0 Comments
A. There are a couple of different ways that reverse thrust works. For jet engines, the principle is the same. Some have "buckets" which was mentioned previously. These "buckets" fold back behind the engine exhaust and redirect the exhaust air forward. Instead of thrust being used to move the aircraft forward, it is redirected to slow the aircraft down. Another type involves redirecting bypass air. A lot of the air that enters a jet intake is used for cooling. A relatively smaller percentage of intake air is actually used for combustion. The bypass air can be redirected forward using the same principle as stated above. The difference is that the air never makes it to the back (aft) side of the engine. There are "blocking doors" that… [cont.]
Answered by jrc - Wed Jan 17 15:29:20 2007
How to calculate reverse thrust?
Q. What is the equation to calculate the reverse thrust drag on an aircraft. I want to find out how much drag th ereverse thrusts provide
Asked by Luke - Sat Feb 6 13:31:46 2010 - - 1 Answers - 0 Comments
Q. What is the equation to calculate the reverse thrust drag on an aircraft. I want to find out how much drag th ereverse thrusts provide
Asked by Luke - Sat Feb 6 13:31:46 2010 - - 1 Answers - 0 Comments
how reverse thrust works? and how the aircraft stop so fast on such a short runway???
Q. how reverse thrust works? and how the aircraft stop so fast on such a short runway???
Asked by sin03 - Sun Sep 16 04:24:14 2007 - - 8 Answers - 0 Comments
A. Good explanations of reverse thrust, but they also have anti-lock brakes which also stop shorter than brakes that lock up. They can stop even shorter, because maximum braking is seldom used on passenger planes because of passenger comfort. Cargo planes use it more often, because the pilots are not discomfited by the sudden stop.
Answered by eferrell01 - Sun Sep 16 10:02:12 2007
Q. how reverse thrust works? and how the aircraft stop so fast on such a short runway???
Asked by sin03 - Sun Sep 16 04:24:14 2007 - - 8 Answers - 0 Comments
A. Good explanations of reverse thrust, but they also have anti-lock brakes which also stop shorter than brakes that lock up. They can stop even shorter, because maximum braking is seldom used on passenger planes because of passenger comfort. Cargo planes use it more often, because the pilots are not discomfited by the sudden stop.
Answered by eferrell01 - Sun Sep 16 10:02:12 2007
Why does the reverse thrust from a water hose stop when placed under the surface of a body of water?
Q. Is it Bernoulli's Principle?
Asked by survivor - Sun Jun 24 20:09:24 2007 - - 3 Answers - 0 Comments
A. It does not stop, but the resistance to movement above the water is AIR while the movement below the water is WATER. Since water is heavier than air the ability of the hose to create enough force to move the water aside is less, not even taking into consideration the higher potential for friction. If you want to see something interesting, mount a T shaped pipe end at the end of the hose in either air or water, and the water flowing in opposite directions should cancel out the force in either direction and basically eliminate movement of the hose. By the way the movement of the hose is due to what is known as reaction force at the end of the hose. This is what primalrily limits the size of hose and line pressure used by a fireman.
Answered by Fittings Doc - Mon Jun 25 15:50:07 2007
Q. Is it Bernoulli's Principle?
Asked by survivor - Sun Jun 24 20:09:24 2007 - - 3 Answers - 0 Comments
A. It does not stop, but the resistance to movement above the water is AIR while the movement below the water is WATER. Since water is heavier than air the ability of the hose to create enough force to move the water aside is less, not even taking into consideration the higher potential for friction. If you want to see something interesting, mount a T shaped pipe end at the end of the hose in either air or water, and the water flowing in opposite directions should cancel out the force in either direction and basically eliminate movement of the hose. By the way the movement of the hose is due to what is known as reaction force at the end of the hose. This is what primalrily limits the size of hose and line pressure used by a fireman.
Answered by Fittings Doc - Mon Jun 25 15:50:07 2007
Does anyone know where I can find images of how reverse thrust works?
Q. Does anyone know where I can find images of how reverse thrust works?
Asked by Sharp - Wed Oct 15 13:48:17 2008 - - 1 Answers - 0 Comments
A. There are two basic types of thrust reversers on turbo-jet and turbo-fan engines. Aerodynamic and mechanical blockage. The first link is a diagram of aerodynamic reversers. A video showing aerodynamic reverser operation: This link shows mechanical blockage in operation. And don't forget, many propellers driven aircraft have reverse thrust capability by reversing the pitch of the propeller blades.
Answered by threesheave - Wed Oct 15 14:19:24 2008
Q. Does anyone know where I can find images of how reverse thrust works?
Asked by Sharp - Wed Oct 15 13:48:17 2008 - - 1 Answers - 0 Comments
A. There are two basic types of thrust reversers on turbo-jet and turbo-fan engines. Aerodynamic and mechanical blockage. The first link is a diagram of aerodynamic reversers. A video showing aerodynamic reverser operation: This link shows mechanical blockage in operation. And don't forget, many propellers driven aircraft have reverse thrust capability by reversing the pitch of the propeller blades.
Answered by threesheave - Wed Oct 15 14:19:24 2008
what is the meaning of reverse thrust of airplanes when braking?
Q. what is the meaning of reverse thrust of airplanes when braking?
Asked by pa - Sat Jan 16 08:27:17 2010 - - 5 Answers - 0 Comments
A. Most thrust reversers do turn the flow slightly forward - maybe 20 degrees or so. But the velocity at that point is pretty low, so the actual thrust in the forward direction created by that flow is pretty small. The way that the reverser works is to convert the gigantic momentum induced by the fan into a sudden stop in the axial sense relative to the engine case. This works essentially the same way if you just turn the flow straight out to the side without directing it forward at all. You don't need to turn the flow back forward. You just need to pull that flow in like gangbusters with the fan - which it does very well when you run the engine up - and then stop it instead of pushing it out the back even faster. The clamshells, and the… [cont.]
Answered by Larry454 - Sat Jan 16 10:54:32 2010
Q. what is the meaning of reverse thrust of airplanes when braking?
Asked by pa - Sat Jan 16 08:27:17 2010 - - 5 Answers - 0 Comments
A. Most thrust reversers do turn the flow slightly forward - maybe 20 degrees or so. But the velocity at that point is pretty low, so the actual thrust in the forward direction created by that flow is pretty small. The way that the reverser works is to convert the gigantic momentum induced by the fan into a sudden stop in the axial sense relative to the engine case. This works essentially the same way if you just turn the flow straight out to the side without directing it forward at all. You don't need to turn the flow back forward. You just need to pull that flow in like gangbusters with the fan - which it does very well when you run the engine up - and then stop it instead of pushing it out the back even faster. The clamshells, and the… [cont.]
Answered by Larry454 - Sat Jan 16 10:54:32 2010
True or false: reverse faults and thrust faults?
Q. Reverse faults and thrust faults are similar with the exception that the angle of dip for thrust faults is smaller.
Asked by Carolina A - Sat Mar 14 00:24:59 2009 - - 3 Answers - 0 Comments
A. This is a poor true/false question. Reverse faults are simply thrust faults with high dip angles. All reverse faults are thrust faults, but not all thrust faults are reverse faults.
Answered by badaspie - Sat Mar 14 00:42:46 2009
Q. Reverse faults and thrust faults are similar with the exception that the angle of dip for thrust faults is smaller.
Asked by Carolina A - Sat Mar 14 00:24:59 2009 - - 3 Answers - 0 Comments
A. This is a poor true/false question. Reverse faults are simply thrust faults with high dip angles. All reverse faults are thrust faults, but not all thrust faults are reverse faults.
Answered by badaspie - Sat Mar 14 00:42:46 2009
cut off reverse thrust in 747, which one to follow?
Q. i encountered 2 different sets of answers in 2 different 747 sim manual. one says to cut off the reverse thrust at 60kts, while another says 80. does it depend on rwy length/landing weight to choose which speed to cut off, or is it a recommendation to cut off at 80 at all times. however cutting off at 80 still leaves me with quite alot of speed to reduce using the brakes/autobrakes. and at high speed i'm not comfortable exiting the rwy. so this question is for the experienced 747 pilots, which speed is correct? don't bother my points! i've been asking too many questions...
Asked by EVOX - Thu Feb 8 09:17:03 2007 - - 4 Answers - 0 Comments
A. When to come out of reverse is largely dependent on airline procedures. Our airline calls for beginning to come out of reverse at about 80 kts and to be fully out of reverse by 60 kts. This is true across all our fleet, not just wide-bodies. The primary reason is FOD, keeping debris from ingesting into the engine. If you are using autobrakes the deceleration rate should remain the same. Autobrakes on all landings is our procedure as this has been found to extend brake life (according to maintenance). Autobrakes in combination with reverse thrust will give a predetermined deceleration rate, MIN, MED, or MAX, whatever you feel is appropriate given the runway and conditions. As reverse thrust becomes less effective the autobrake system will… [cont.]
Answered by Sul - Thu Feb 8 10:56:00 2007
Q. i encountered 2 different sets of answers in 2 different 747 sim manual. one says to cut off the reverse thrust at 60kts, while another says 80. does it depend on rwy length/landing weight to choose which speed to cut off, or is it a recommendation to cut off at 80 at all times. however cutting off at 80 still leaves me with quite alot of speed to reduce using the brakes/autobrakes. and at high speed i'm not comfortable exiting the rwy. so this question is for the experienced 747 pilots, which speed is correct? don't bother my points! i've been asking too many questions...
Asked by EVOX - Thu Feb 8 09:17:03 2007 - - 4 Answers - 0 Comments
A. When to come out of reverse is largely dependent on airline procedures. Our airline calls for beginning to come out of reverse at about 80 kts and to be fully out of reverse by 60 kts. This is true across all our fleet, not just wide-bodies. The primary reason is FOD, keeping debris from ingesting into the engine. If you are using autobrakes the deceleration rate should remain the same. Autobrakes on all landings is our procedure as this has been found to extend brake life (according to maintenance). Autobrakes in combination with reverse thrust will give a predetermined deceleration rate, MIN, MED, or MAX, whatever you feel is appropriate given the runway and conditions. As reverse thrust becomes less effective the autobrake system will… [cont.]
Answered by Sul - Thu Feb 8 10:56:00 2007
I've found this example showing a problem that asked us to find the size of the reverse thrust supplied...?
Q. by the engines and they got the answer as negative but the final statement says the value as positive (150, 000N) and at last they asked why was the answer obtained from the equations negative so I was wondering why was it really negative? First they used v (sq.)= u(sq.) + 2as to find the acceleration (which comes negative) and then f=ma to find the reverse thrust which eventually came as negative but why? This wouldn't have happened if we used v (sq.)= u(sq.) - 2as so now I'm also confused when to use v (sq.)= u(sq.) + 2as and v (sq.)= u(sq.) - 2as. Thanks.
Asked by Autumn Dream - Sun Nov 16 14:29:46 2008 - - 1 Answers - 0 Comments
A. Assuming that u is initial v (vi) and v is final v (vf), that both are in the same direction, and that s has the same sign as both v's, vf^2 - vi^2 = 2as correctly indicates sign of a which you say is negative. This means vf[cont.]
Answered by kirchwey - Sun Nov 16 15:13:59 2008
Q. by the engines and they got the answer as negative but the final statement says the value as positive (150, 000N) and at last they asked why was the answer obtained from the equations negative so I was wondering why was it really negative? First they used v (sq.)= u(sq.) + 2as to find the acceleration (which comes negative) and then f=ma to find the reverse thrust which eventually came as negative but why? This wouldn't have happened if we used v (sq.)= u(sq.) - 2as so now I'm also confused when to use v (sq.)= u(sq.) + 2as and v (sq.)= u(sq.) - 2as. Thanks.
Asked by Autumn Dream - Sun Nov 16 14:29:46 2008 - - 1 Answers - 0 Comments
A. Assuming that u is initial v (vi) and v is final v (vf), that both are in the same direction, and that s has the same sign as both v's, vf^2 - vi^2 = 2as correctly indicates sign of a which you say is negative. This means vf
Answered by kirchwey - Sun Nov 16 15:13:59 2008
Why the Airbus A380 has only 2 reverse thrusters?
Q. I know for a fact that the A380's gear brakes are strong enough to stop the plane even without deploying the reverse thrust but do you think it is more safe to have 4 reverse thrusters for better braking during wet conditions?
Asked by parawakan - Thu Oct 4 16:40:51 2007 - - 12 Answers - 0 Comments
A. Weight, expense already covered. Remember that an aircraft is qualified to stop without the use of any TR. If the pilot slammed on the brakes, the pax would be out of their seats and banging their noses on the seat in front. TR are a bonus for the shorter runways, ice conditions etc. They are also abused to stop quickly and take the early exit off the runway, to save 3 minutes taxiing, which all helps to get the bird turned round and back in the air. But one of the most important factor is that the OB engines are usually at the extent of, or beyond the runway width. These big fans are only a few feet off the ground, so sticking a RT on will blast all the debris from the grass/"Off runway" area and with it being a slightly forward blast. [cont.]
Answered by Paul H - Thu Oct 4 18:14:23 2007
Q. I know for a fact that the A380's gear brakes are strong enough to stop the plane even without deploying the reverse thrust but do you think it is more safe to have 4 reverse thrusters for better braking during wet conditions?
Asked by parawakan - Thu Oct 4 16:40:51 2007 - - 12 Answers - 0 Comments
A. Weight, expense already covered. Remember that an aircraft is qualified to stop without the use of any TR. If the pilot slammed on the brakes, the pax would be out of their seats and banging their noses on the seat in front. TR are a bonus for the shorter runways, ice conditions etc. They are also abused to stop quickly and take the early exit off the runway, to save 3 minutes taxiing, which all helps to get the bird turned round and back in the air. But one of the most important factor is that the OB engines are usually at the extent of, or beyond the runway width. These big fans are only a few feet off the ground, so sticking a RT on will blast all the debris from the grass/"Off runway" area and with it being a slightly forward blast. [cont.]
Answered by Paul H - Thu Oct 4 18:14:23 2007
About thrust reverse?
Q. Some aircraft like md-80's and dc-9's can go reverse from the gate without any pushback tug.Their engines are the same as an boeing 737-200.but why 737-200 cannot move backwards.and 747,757,767,777,787 and next generations 737 and airbus planes cannot do it but they have their thrust reverse. WHY?
Asked by Maykel B - Sat Jan 3 07:10:54 2009 - - 6 Answers - 0 Comments
A. Reverse thrust is for reversing the thrust upon landing, not to reverse the plane. If an aircraft is stopped and the thrust is reversed, it is usually only for a few seconds, and since the rpms are raised, there's a higher chance for FOD to enter the intakes, especially for wing mounted engines. Propeller driven aircraft like the C-130 can back into parking spots, etc, because the pitch of their props can be changed to direct airflow. Jet engines are not made to reverse the travel of the aircraft on the ground, though it probably can be done...not a good idea, though. I've never seen an MD-80, DC-9, (or any other passenger plane for that matter) reverse out of a gate. Where have I been??? lol
Answered by oicu81or2 - Sat Jan 3 10:19:28 2009
Q. Some aircraft like md-80's and dc-9's can go reverse from the gate without any pushback tug.Their engines are the same as an boeing 737-200.but why 737-200 cannot move backwards.and 747,757,767,777,787 and next generations 737 and airbus planes cannot do it but they have their thrust reverse. WHY?
Asked by Maykel B - Sat Jan 3 07:10:54 2009 - - 6 Answers - 0 Comments
A. Reverse thrust is for reversing the thrust upon landing, not to reverse the plane. If an aircraft is stopped and the thrust is reversed, it is usually only for a few seconds, and since the rpms are raised, there's a higher chance for FOD to enter the intakes, especially for wing mounted engines. Propeller driven aircraft like the C-130 can back into parking spots, etc, because the pitch of their props can be changed to direct airflow. Jet engines are not made to reverse the travel of the aircraft on the ground, though it probably can be done...not a good idea, though. I've never seen an MD-80, DC-9, (or any other passenger plane for that matter) reverse out of a gate. Where have I been??? lol
Answered by oicu81or2 - Sat Jan 3 10:19:28 2009
AA MD80 pushback using reverse thrust?
Q. a few years ago, at least at DFW, they would use this method...I don't know if it was to save the salary of a tug driver, or what. It just occurred to me that they don't seem to do it anymore. Does anybody know why they started doing this, and why they stopped? hey you unbelievers, do you think this is a fake video?
Asked by silentnonrev - Fri Dec 25 10:43:26 2009 - - 4 Answers - 0 Comments
A. not only AA did this, and not only in DFW. But the fuel costs are too high. But it never was done this way in Europe, as far as I know.
Answered by finestrat1 - Fri Dec 25 15:39:30 2009
Q. a few years ago, at least at DFW, they would use this method...I don't know if it was to save the salary of a tug driver, or what. It just occurred to me that they don't seem to do it anymore. Does anybody know why they started doing this, and why they stopped? hey you unbelievers, do you think this is a fake video?
Asked by silentnonrev - Fri Dec 25 10:43:26 2009 - - 4 Answers - 0 Comments
A. not only AA did this, and not only in DFW. But the fuel costs are too high. But it never was done this way in Europe, as far as I know.
Answered by finestrat1 - Fri Dec 25 15:39:30 2009
If a turbofan produces forwrad thrust and Newton's second low action and reaction are equal and opposite, how
Q. According to newton's second low action and reaction are equal,opposite so why does reverse thrust work if the engines still suck in air?
Asked by ga5aq - Sun Jul 22 10:55:59 2007 - - 8 Answers - 0 Comments
A. I think I know what you're asking, I thought the same thing. The engines don't move the plane by sucking. The air getting sucked in the inlet comes from all directions, even from behind the leading edge of the inlet. All the thrust is made by blowing air and exhaust out the back. The thrust reverser's just redirect most or all of the thrust (air or air and exhaust) in a forward direction. In order for your theory to be true a normal running engine will suck air from 100 feet in front of it and blow it back 100 feet behind it. Think of a vacuum cleaner (shop vac), you can hold your hand 2 inches from the suction end and not feel anything but you'll be able to feel the air coming out of the exhaust more than 10 feet away. If you… [cont.]
Answered by stolsai - Sun Jul 22 19:43:46 2007
Q. According to newton's second low action and reaction are equal,opposite so why does reverse thrust work if the engines still suck in air?
Asked by ga5aq - Sun Jul 22 10:55:59 2007 - - 8 Answers - 0 Comments
A. I think I know what you're asking, I thought the same thing. The engines don't move the plane by sucking. The air getting sucked in the inlet comes from all directions, even from behind the leading edge of the inlet. All the thrust is made by blowing air and exhaust out the back. The thrust reverser's just redirect most or all of the thrust (air or air and exhaust) in a forward direction. In order for your theory to be true a normal running engine will suck air from 100 feet in front of it and blow it back 100 feet behind it. Think of a vacuum cleaner (shop vac), you can hold your hand 2 inches from the suction end and not feel anything but you'll be able to feel the air coming out of the exhaust more than 10 feet away. If you… [cont.]
Answered by stolsai - Sun Jul 22 19:43:46 2007
How fast can reverse thrusting move an airplane backwards? Haha?
Q. Or maybe they never tried it? Haha
Asked by Billy A - Wed Oct 17 23:47:40 2007 - - 8 Answers - 0 Comments
A. not while flying. but remember that roar after you land? that's the thrust reversers, slowing the plane down. and they can, in fact, make a plane go backward. in fact, i've actually seen one do that, to back up from the jetway, when there was no pusher cart available. many years ago, in the era of propeller planes, i remember a string of 4 planes taxing in line down a runway, and another coming at them head on. "This'll be good" i thought. well, they all stopped, and the lone one backed up, turning 90 degrees, and sort of "parked", to let the other ones pass. now none of them went fast, nor were they flying. but they can, and do, move a plane backwards.
Answered by linlyons - Thu Oct 18 00:00:51 2007
Q. Or maybe they never tried it? Haha
Asked by Billy A - Wed Oct 17 23:47:40 2007 - - 8 Answers - 0 Comments
A. not while flying. but remember that roar after you land? that's the thrust reversers, slowing the plane down. and they can, in fact, make a plane go backward. in fact, i've actually seen one do that, to back up from the jetway, when there was no pusher cart available. many years ago, in the era of propeller planes, i remember a string of 4 planes taxing in line down a runway, and another coming at them head on. "This'll be good" i thought. well, they all stopped, and the lone one backed up, turning 90 degrees, and sort of "parked", to let the other ones pass. now none of them went fast, nor were they flying. but they can, and do, move a plane backwards.
Answered by linlyons - Thu Oct 18 00:00:51 2007
what are some famous reverse(aka thrust) faults in the us?
Q. please answer asap! thanks =]
Asked by Ari L - Mon Dec 17 18:48:59 2007 - - 2 Answers - 0 Comments
A. Most of the Rocky Mountains in western Montana are thrust fault mountains. Here is is very common to have older rocks lying over younger strata.
Answered by Flyboy - Mon Dec 17 18:55:26 2007
Q. please answer asap! thanks =]
Asked by Ari L - Mon Dec 17 18:48:59 2007 - - 2 Answers - 0 Comments
A. Most of the Rocky Mountains in western Montana are thrust fault mountains. Here is is very common to have older rocks lying over younger strata.
Answered by Flyboy - Mon Dec 17 18:55:26 2007
How many planes are capable of full thrust reverse while in-flight at altitude?
Q. and are allowed to do this operationally? meaning fully deployed thrust reversers, not necessarily at max power I know of one plane that has this capability for certain, but what others are there? The answers isn't none... Nope, definitely thrust reversal. It allows for a rapid descent known as a "Tac D" or tactical descent. Sigh. This is frustrating. I have already said, the answer is not none!!! It can be done. It has been done. I have done it. I am wondering what other planes, besides the C-17, can do it. Get the point now? Try a non-repetative incorrect answer please.
Asked by The God of reason - Tue Sep 8 16:58:48 2009 - - 10 Answers - 0 Comments
A. DC9/MD80 reversers can be deployed in flight, but there is no approved procedure for doing so. DC-8 crews deployed #2 and #3 reversers (but no reverse thrust) for rapid descents, usually in cargo aircraft, since the deck angle would likely scare the hell out of pax ;) Do not know if that procedures was approved.
Answered by Jimmbbo - Tue Sep 8 19:21:21 2009
Q. and are allowed to do this operationally? meaning fully deployed thrust reversers, not necessarily at max power I know of one plane that has this capability for certain, but what others are there? The answers isn't none... Nope, definitely thrust reversal. It allows for a rapid descent known as a "Tac D" or tactical descent. Sigh. This is frustrating. I have already said, the answer is not none!!! It can be done. It has been done. I have done it. I am wondering what other planes, besides the C-17, can do it. Get the point now? Try a non-repetative incorrect answer please.
Asked by The God of reason - Tue Sep 8 16:58:48 2009 - - 10 Answers - 0 Comments
A. DC9/MD80 reversers can be deployed in flight, but there is no approved procedure for doing so. DC-8 crews deployed #2 and #3 reversers (but no reverse thrust) for rapid descents, usually in cargo aircraft, since the deck angle would likely scare the hell out of pax ;) Do not know if that procedures was approved.
Answered by Jimmbbo - Tue Sep 8 19:21:21 2009
From Yahoo Answer Search: 'reverse thrust'
Wed Mar 17 15:33:39 2010 [ refresh local cache ]
