Thread Tools
This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies.
Jul 13, 2007, 02:20 AM
Registered User
Jack Crossfire's Avatar
Thread OP
Discussion

Bicycle wheel terrorism


Well back to full cyclic tests. In test after test, the same thing happens that happened to the Kalman filter. Drifting pitch over time followed by uncontrolled acceleration. Maintaining heading causes some improvement. At least this INS doesn't explode randomly. Really need video to characterize the drift, but with those high velocities there's no way to keep the camera on it.

In a copter, heading determines pitch. Pitch up 45', turn 180', and the INS still thinks it's pitched up 45'. Bicycle wheel syndrome, U might say. So you have to either recalculate pitch for every heading or fix the heading manually as we've been doing. Don't intend to mount a 4th gyro on Vicacopter for heading hold.
Sign up now
to remove ads between posts


Quick Reply
Message:
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Yippee! bicycle wheel retrievers BrianSmith Sailplane Talk 1 Oct 27, 2002 01:19 AM
How does a "Bicycle wheel" retriever work? tempest411 Thermal 25 Sep 26, 2002 03:25 PM