Melchior FRANZ wrote > * Vivian Meazza -- Saturday 08 January 2005 20:05: > > Melchior FRANZ wrote > > > the bo105 doesn't have flapping hinges. :-) > > > In which case it would bank, but is there an elastic 'hinge' as in the > > Westland Lynx? Or is there some other mechanism? > > It does AFAIK bank, and the blades take some force, too. See here for more > info: > > http://www.bw-flyer.de/neu/helikopter/bo-105/bo105.htm [German, but > nice sketches] > http://rotorcraft.arc.nasa.gov/research/bo105.html >
Ah ... some quick research, and some delving into memory (mine). The hingeless (Bo 105 etc.) or the rigid rotor (Westland Lynx etc) blades still flap and lead/lag. It's just that they don't have hinges, but instead allow the blade to flex up/down under aerodynamic forces, while the lead/lag is managed by elastomeric couplings of some sort. Unless adjustments are made for the difference in lift caused by the advancing/retreating blade effect, the helicopter not just bank, but will roll over. The YASim code seems to have a hinge and rigid blades BTW, although I haven't studied it in any detail. Regards, Vivian _______________________________________________ Flightgear-users mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
