In article ,
"Kyle Boatright" wrote:

Any rumblings from the desert on the cause of the roll problems during
yesterday's flight?

I know Melville said he might have stepped on something, and Rutan was
quoted as saying wind shear might cause a roll problem, but neither one
appeared to have much confidence in their answer.

An uncommanded roll like that would probably cause a permanant crease in my
seat cushion.

KB



We often experienced it in some of the missiles we tested. We attributed
it to asymmetrical mass distributions, where the thrust line did not
coincide with the axis of symmetry, resulting in a thrust-induced roll.