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I knew turbofans can generate reverse thrust to assist braking, but here they generate enough (ie more than forward thrust) to reverse the aircraft. Is that  special ? Peter

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Hi Peter,

 yes they can do that. The aircraft wasn;t over heavy. I have not seen that before.

They must be careful though as the reverse thrust airstream is heading back towards the engine intake - any rubbish on the runway could easily be sucked up.

Also you must ensure that your reverse inhibit switches are working for the Overdrive.

 

Roger

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It seems most passenger jet aircraft can taxi backwards but are prohibited on safety grounds - not least because they can't see where they are going (no wing mirrors).  Some have problems even when going forwards:

 

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It was quite common practice in the 80s and 90s in the US for commercial aircraft operating into small, ill equipped airports, to use power push-back but they needed wing men to do this safely. I have seen a 757 on power pushback send a train of baggage trucks snaking across the apron, caused lots of shouting and waving.

It was in the C17 spec that the aircraft must power itself back up a small incline (5% ??), fully loaded with a Abrams M1 tank.

Mick

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3 hours ago, RobH said:

It seems most passenger jet aircraft can taxi backwards but are prohibited on safety grounds - not least because they can't see where they are going (no wing mirrors).  Some have problems even when going forwards:

 

What happens on the right hand side of the aircraft, just after impact?     Looks as if the pilot throws himself out.

 

And in the original arrival of "Marine One", we see the helicopter, rotor-less, propelling itself across the tarmac, towing a caravn of trollies.   How does it do that?  Powered wheels??

Edited by john.r.davies
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15 minutes ago, john.r.davies said:

What happens on the right hand side of the aircraft, just after impact?     Looks as if the pilot throws himself out.

:D:D

Actually it is a part of the lamp assembly. You can see it depart over the top of the aircraft as the pole drops.

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42 minutes ago, john.r.davies said:

What happens on the right hand side of the aircraft, just after impact?     Looks as if the pilot throws himself out.

 

And in the original arrival of "Marine One", we see the helicopter, rotor-less, propelling itself across the tarmac, towing a caravn of trollies.   How does it do that?  Powered wheels??

The pilot has the lefthand seat up front.  He probably threw the co-pilot out to get the lamp assembly. 

Sadly the aircraft are not usually under computer control when on the ground - that may be a good mod' to carry out.

 

Roger

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53 minutes ago, john.r.davies said:

What happens on the right hand side of the aircraft, just after impact?     Looks as if the pilot throws himself out.

 

And in the original arrival of "Marine One", we see the helicopter, rotor-less, propelling itself across the tarmac, towing a caravn of trollies.   How does it do that?  Powered wheels??

Hi John,

the first buggy in the trolley train is a powered driving unit. It is pushing the helicopter and pulling the other wagons.

You can see the driver sitting in the front of it.

 

Roger

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