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Forum: Tech Log

22nd Jun 2011, 04:26

Replies: 2

Performance Calculation Safety Margins

Views: 1,376

Posted By wmelvin

Safety Margin

In 1953 the ICAO Standing Committee on Performance, composed of experts from a number of nations published what became known as the SCP-53 report. This report set out to establish safety margins for...

Forum: Tech Log

21st Jun 2011, 19:12

Replies: 1,069

AF 447 Thread no. 4

Views: 281,545

Posted By wmelvin

TO/GA

Although the Wright brothers used angle of incidence for what we now call AOA, my question still stands; Does the GA mode also command a flight path? If so, can it use elevator trim to accomplish...

Forum: Tech Log

21st Jun 2011, 16:03

Replies: 1,069

AF 447 Thread no. 4

Views: 281,545

Posted By wmelvin

TO/GA input

From Wikipedia I find: "On Airbus planes pushing throttles to TOGA detent does all regarding flight path and speed", and in Thread 3, post # 16, I find from jcjeant the English translation from...

Forum: Tech Log

16th Jun 2011, 12:37

Replies: 5

A320 Severe Turbulence Speed

Views: 3,621

Posted By wmelvin

Vb or severe turbulence speed

The original concept was that it is better to stall the wing than to have it break, so before jet aircraft, the Vb speed or severe turbulence speed was the square root of the designed g load of the...

Forum: Tech Log

16th Jun 2011, 12:01

Replies: 1,069

AF 447 Thread no. 4

Views: 281,545

Posted By wmelvin

AF 447 Elevator trim

Is there a determination of how the elevator trim came to be so high, nose up? The trim has more authority than the elevator and I doubt it is possible to recover from a deep stall with the trim...

Forum: Tech Log

7th Jun 2011, 04:59

Replies: 11

Stall recovery training

Views: 3,282

Posted By wmelvin

Delta 191 control column push

Control column forces are not recorded on an L-1011. There is no way to conclude what it could have been without using measured control surface position and backtracking with numerous assumptions in...

Forum: Tech Log

4th Jun 2011, 15:13

Replies: 11

Stall recovery training

Views: 3,282

Posted By wmelvin

minimizing height loss

Your reply speaks directly to the issues which began in the 1970s with similar recommendations and resulted in the stall recovery procedure I am asking about. Faulty windshear models were used which...

Forum: Tech Log

3rd Jun 2011, 14:12

Replies: 11

Stall recovery training

Views: 3,282

Posted By wmelvin

Thanks for your response. Minimum height loss is...

Thanks for your response. Minimum height loss is what I am talking about. It came from a mistaken belief that aircraft performance for windshear encounters could be enhanced at high AOA. The last...

Forum: Tech Log

2nd Jun 2011, 12:50

Replies: 11

Stall recovery training

Views: 3,282

Posted By wmelvin

Question

The answer to your question is, yes. Can you answer my question?

Forum: Tech Log

1st Jun 2011, 01:10

Replies: 11

Stall recovery training

Views: 3,282

Posted By wmelvin

Stall recovery training

A fallout of the stick shaker technique for windshear recovery was airline stall training to do a power off stall with a power on recovery while attempting to hold the pitch at the level of the...

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