On Jul 5, 12:45*pm, Spehro Pefhany
wrote:
On Tue, 05 Jul 2011 10:52:22 -0700, Jim Stewart
wrote:

Spehro Pefhany wrote:

Will any commonly available 240V VFDs go up to 400Hz? Need around
7.5HP.

Powering up your surplus Minuteman missile?

Close. Testing a mass of sophisticated equipment that gets crammed
into a small cargo aircraft.

I work in the avionics industry. Just how are you going to show all
the environmental compliance test requirements. The commercial world
uses RTCA DO-160() as the bible. There are many test requirements
that must be shown for airworthiness. The big ones are that it does
not upset other equipments, and is not a fire hazard. Even if the
equipment is non-essential to safe flight and landing, it can not
upset equipments that are essential or critical to SFL. Radiated and
conducted RF emissions are the expensive test lab tests.
Even for experimental test flights, the safety of flight paperwork
must show that the equipment will not cause safety problems.
ignator