Is this a link to the project? http://www.darpa.mil/tto/programs/hellads.html Could you put up some links to discussions about this technology? My though is that any aircraft like the "electric jet" may not be best place to try out such new tech. I would think a aircraft without a Full Authority Digital Engine Control and having reversionary mechanical flight controls would fit the bill. I guess DARPA mean that when the say "Finally, the 150 kW HEL will be integrated into a surrogate aircraft".

In order to convert the power of the gas turbine into electricty, you'd need a fairly funky generator. In terms of stealth the rotating magnetic assembly would be akin to fitting a large revolving beacon to the top of the plane.

All aircraft have rotating magnetic assembly (generators), including stealth aircraft like the F-22, F-117, B-2, and eventually F-35. Figure that an F-16 has about 50kva generator now. Problem with a 150kva generator is fitting it inside an airframe that's too small for its skin now. The PTO on the engine has load limits too.

There are generators with sufficient power in a small size in development. The trouble is that the magnets required are phenomenally powerful - they'd muck up electronics something chronic, and probably be fairly visible too. Incidentally, if you're going to use units, could you use standard notation? It took me ages to work out what a kva was until I twigged that it should be kVA

Working under operational generators has killed two of my watches however I think that the issue of shielding of electronics from the magnetic field is not a major problem. It will add weight however. Bb

Mu-metal - http://en.wikipedia.org/wiki/Mu-metal http://www.magnetic-shielding.com/theorie/p_magnetic_waves.htm http://www.magnetic-shielding.com/theorie/p_magnetic_shield.htm mu-metal doesn't like mechanical shocks though! http://cdms.physics.ucsb.edu/bunker/shield/MuMetal/mumetal.html How much power can the Ram Air Turbine installed within the wing tip pod of a air-to-air refueling aircraft generate?