PPRuNe Forums - View Single Post - Why is Rolling G dangerous?
View Single Post
Old 9th May 2005, 18:42
  #8 (permalink)  
alf5071h
 
Join Date: Jul 2003
Location: An Island Province
Posts: 1,257
Likes: 0
Received 1 Like on 1 Post
Centaurus, re rudder to "pick up a wing" during UA recovery, you appear to operate in a sheltered operation, possibly due to some good basic training in your part of the world. I note that many myths of aviation have been dispelled via the FSA safety magazine May-June 2002, use of rudder in the stall being one. However elsewhere in the industry, certainly pre the AA A300-600 accident, there are many inappropriate upset recovery techniques. In addition, not every one gets in-flight upset recovery training as you describe.
Simulators are valuable for teaching the techniques for upset recovery; not always being realistic for ‘g’, disorientation, or body sensations; a real aircraft is always best for these.

AirRabbit, given that the majority of upsets occur within the normal flight tested envelope (including stalling), then most simulators are of some, if limited value for upset recovery training; at least to demonstrate what the aircraft feels like. Not necessarily to determine the quickest or best way of flying the recovery, but how the controls / trim change with rapid speed change.

Many simulators do include extrapolations of the aircraft’s performance in pitch and roll; even the largest of airliners may have been demonstrated to 120 deg roll and probably +60 to -45 deg in pitch, thus extrapolation is quite easy; it is the non linear aerodynamics post stall or at excessive speed that could be unrealistic.
Pilots would have greater benefit from upset training that teaches awareness of the situations that lead to an upset, the onset cues, and how to recovery from the initial stages of the upset. The most likely human aspect affecting a line pilot who has entered an upset is that he/she forgets – the mind is focussed on ‘what the …’ attempting to understand the situation. Even when the upset is understood it is most unlikely that the pilot will recall any discussion on amount of aileron, or roll and pull for certain circumstances; the most valuable training is to embed the basics of recovery into subconscious action (over train the basics) and the control of surprise/fear. Upsets are fortunately rare events and would not normally require such attention if crews flew the aircraft correctly during controlled flight, thus training in these aspects may be of even greater value, keep it simple.
For a more scientific approach to the above see ‘Human Factors of Upset Recovery Training’, Capt Janeen Kochan & Mike Moskal, Calspan Research, FSF EASS Warsaw Mar 2005.
alf5071h is offline