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Mark Irvine wrote:
mmm, not so sure, the physiology of the human body is such that the brain needs that blood! While modern G suits help to limit the surge of blood to the feet they cannot totally stop it. Also the human head head weighs around 4 - 5 kg. At 9 G the effective weight is 36 - 45 kg. That does not take into account the additional weight of the helmet. That is some load through the neck, come to think of it is is like 1/2 of me being on my own head with no support, ouch... I still think that the human is the limiting factor. Mark Snip...... Interestingly, the Russians have a different approach - instead of trying to make the systems cope with the G stresses, they tend to select squat, fit men - and then train them to tolerate G, rather than trying to have systems (G-suits, cockpit environment etc) that try to cater for all body sizes. In other words - start with the best bodies - then add the systems. During a visit to Kubinka, near Moscow, (the home of the Russian aerobatic teams - the Russian Knights and the Swifts) in 1993, they told us that during a visit by the Blue Angels they swapped back-seat rides in F/A-18's and Su-27's & MiG-29's. The US Navy pilots (who are no slouches!) were amazed at the Russian pilot's ability to tolerate high-G forces. In fact they (the Russian pilots) pointed to one of their number (a short, bull-necked, squat, MiG-29/ Swifts pilot) and said that he held the squadron record at 11G - and this was a regular occurrence ! They also laughingly stated that when he joined the squadron he was over six feet tall !! (They also pointed to another pilot who had a large hook nose - and said that he was a parrot rather than a swift !!! - they had a great sense of humour). Also - wasn't there a discussion on this NG some time ago about the ability of females to tolerate highr G forces than men ?? Something to do with their physiology (lower centre of gravity ??) Or am I opening up a whole new can of worms ?? ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++ Ken Duffey - Flanker Freak & Russian Aviation Enthusiast Flankers Website - http://www.flankers.co.uk/ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++ |
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