At 06:31 PM 9/19/2002 -0700, you wrote: >On Thu, 19 Sep 2002 01:52:52 -0500, John Carmack ><[EMAIL PROTECTED]> wrote: > > >With four rotating blades, it is going to have a lot of gyroscopic > >stability, so it won't be nearly as twitchy as a pure rocket vehicle. > >Two of the blades rotate backwards - which has made motor tuning and >proprotor sourcing interesting - so it should have almost no >gyroscopic stability. (This also led to its first sorta-flight a few >months ago: we used right handed threads on the Jesus nuts for the >counter-rotating proprotors, and discovered first hand why it's called >the Jesus nut. The proprotor probably would have climbed a couple >hundred feet if it hadn't hit the next balcony up. No injuries, but >no video, either - darn.) > >I'm just wondering if the electric motor system will react very >differently to control inputs than the rocket motor system will. I >suspect latency is the only real issue - gain issues can be dealt with >in software. > >-R
With counter rotating blades you won't have any rolling torque, but you will still have a gyroscopic stabilizing effect that will make it resist changes in attitude. John Carmack _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
