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Old 27th Apr 2005, 19:44
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Graviman
 
Join Date: Nov 2004
Location: Cambridgeshire, UK
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Wowsers, i kindof feel like a lamb to the slaughter!
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I have just had my second go in an R22. Ever had that amusing occurence when you pull collective to flare then wonder why you have turned to the right? I imagine switching from clockwise to anti-clockwise main rotor provokes similar experience. Soon figured my goof, and naturally thought of the lateral symmetry of the intermesher. Less likelyhood of stinging yourself too (no i didn't) - no tail rotor...


Thinking about some of the points raised in all the above threads:

Since there is no transfer shaft, i see desynching mains as unlikely - as long as gearbox is well designed/tested. Interleavers far more vaulnerable.

Don't believe synchropters would be any worse or better than a similar disk loading conventional. A twin 3-rotor would have similar performance to 6-rotor - ie higher profile drag, but very low vibration.

Since, ideally higher, retreating blade is unloaded there will be no "bi-plane" drag. Agree that active blade twist is required to optimise AOA across blade in all conditions. Still suggest tip flaps to force elliptical lift washout at tip (lowest tip losses). Convinced this offers superior highspeed performance potential to ABC - Nick?

Regards ease of piloting, now at least i have some experience of the problems of conventionals - will have a couple of more goes, but don't tell my bank . Pedal symmetry a definate plus! Rigid rotor would allow fast response to input - ie good pilot feedback. Dave you really must think about hand-off hover stability. I don't see how synchropter will be improved over conventional rigid. I honestly suggest a lockheed CL-475 style spring input gyro system - being mechanically simple, and so reliable.

Any thoughts, or is everyone quietly hoping Dave will jus' built it an' see? My offer of FEA/CAD still stands BTW...

Mart
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