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Using Reverse Thrust for pushback

 
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the_380
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Joined: 19 Dec 2006
Posts: 2329
Location: Mumbai, India

PostPosted: Sun Mar 04, 2007 4:41 pm    Post subject: Using Reverse Thrust for pushback Reply with quote

Just saw this video.
It raises a question in my mind....why don't airlines use reverse thrust for pushback? Is the only reason that it might not be safe or something else as well.
Inputs awaited.
regards,
Avijeet
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HAWK21M
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Joined: 19 Dec 2006
Posts: 8132
Location: Mumbai, INDIA

PostPosted: Sun Mar 04, 2007 10:36 pm    Post subject: Reply with quote

Its called Powerback.
Normally used fr Tail mounted Powerplants,as there is a risk of tipping over on Low Wing mounted Aircraft ,Hazard toGround staff & FOD.
On Wing mounted Engines.Stopping a powerback is by application of Forward thrust & NOT BRAKES.
http://en.wikipedia.org/wiki/Powerback
The video even shows #3 Engine stalling.Damage to Powerplant life is an issue too.

regds
MEL
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Last edited by HAWK21M on Mon Mar 05, 2007 10:05 am; edited 2 times in total
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stealthpilot
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Joined: 19 Dec 2006
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Location: BLR, DXB

PostPosted: Mon Mar 05, 2007 9:10 am    Post subject: Reply with quote

http://video.google.com/videoplay?docid=6833000875191983573&q=powerback+aircraft+video&hl=en

You generally donít see both engines started up near the aerobridges; planes are usually pushed back for engine start. But yea as Mel said, FoD is a factor, and as you mentioned the (most important) safety aspects of it (having stuff blown everywhere).
Another one is cost, not only in terms of fuel consumption but also engine use.
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