On 13 Jan 2006 16:32:35 -0800, " wrote:

Another data point for Rotax engines comes from the fact that the air
force uses them in some of the drones vehicles. Google UAV and Rotax.
Draw your own conclusion on whether USAF endorsement is good or bad.

Not necessarily a powerful endorsement. The engines have full-time,
professional maintenance technicians and are cheap enough that the government
could replace them after a few flights. There's a lot of difference between a
few dozen hours on an unmanned vehicle on a military maintenance schedule vs.
thousands of hours on a non-professionally-maintained aircraft with a pilot
aboard.

Ron Wanttaja