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Forum: Tech Log

1st Jan 2011, 10:42

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

Off Loading Compressor

CTF, I know that driving the Compressor takes a lot of Energy which is extracted by the associated turbine, however I do not know of any engine which has other than normal bleed air extracted during...

Forum: Tech Log

1st Jan 2011, 04:34

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

Thrust Reverse Inoperative

Lomapaseo. I too would rather have Thrust Reverse operational than not. I suspect Qantas also has re-thought the "Idle Reverse - Flap 25" preferred technique which was in vogue when they ran a...

Forum: Tech Log

1st Jan 2011, 00:02

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

B727 reverse thrust. Use airborne.

Four Engine Jock. In the B707 and B747 it is possible to introduce reverse thrust whether on the ground or airborne. The Thrust levers (Forward & Reverse) are protected by an inter-locking system...

Forum: Tech Log

31st Dec 2010, 09:51

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

Thrust reversal

SNS3Guppy. If you believe that the contribution made by reversing the gas flow and/or fan discharge is such a minor one in the reduction of forward speed, why is it that so much work goes into the...

Forum: Tech Log

30th Dec 2010, 09:24

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

Inlet drag

Lomapaseo. I did not say that either RR or GE dispute the effects of inlet drag. What I did say was that neither mention it when explaining how thrust reversal assists in slowing the aircraft. I...

Forum: Tech Log

29th Dec 2010, 09:46

Replies: 120

reversers and a/c speed

Views: 17,246

Posted By Old Fella

Using Reverse Thrust.

Whether it is the "hot stream" or the "cold stream" mass air flow being diverted to provide reverse thrust the effective speed retardation is achieved by redirecting the gas or mass air flow foward,...

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