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Sat Apr 24 20:44:42 BST 2004

In a message dated 24-Apr-04 11:16:01 Central Daylight Time, KMATTOX at aol.com 
writes:
Dr. Krin:  You and others on this list would find it hard to believe, but I 
spent a considerable part of my early professional life in aviation safety, 
especially in the area of helicopters and patterns of injury, etc.   My very 
first paper in my CV is on this subject back in 1966.

Interesting...I'll have to look that one up...I'm familiar with Dr. Lam's 
work, of course, as that was our 'bible' in the 1980-83 time frame.

We did put parachutes on some developing helicopters of the time.  The early 
rigid rotors were there were experiments in loops and rolls and the very early 
tandem gun ships had not only parachutes in the helicopter but EJECTION 
seats. 
IIRC, there was also another method, one requiring a cutting charge in the 
main rotor mast to blow the rotor free before the canopy went.

Yes, we thought of that big rotating wing above the helicopter and the 
ejection seats in these experimental helicopters were DOWNWARD ejection seats.    I 
do not recall that an ejection was ever required.    

k
nice idea, but hardly 'zero zero' like the Martin Baker or the later ACESII 
systems that were later used. 

ck
Charles S. Krin, DO
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