Doug Jones wrote: > Yep. I put a fair amount of work back at RotRock into means for > torquing that huge momentum wheel over during the ascent burn.
Differential throttling (simulating the cyclic-pitch function of a helicopter rotor) seems like the best bet. There are a lot of ways to do that, but most of them require actuators with response times shorter than the rotation rate. Others require knowing a lot more about the construction of the bearing hub and its fluid seals than I do right now. And then, of course, the engine wheel has to be rigid enough to withstand these oscillatory torques. That's not a problem for helicopter rotors, because they're not rigid; the blades flap all over the place. But I don't think the engine wheel can be allowed to do that. Cheers! --Stu _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
