If You Want a Good Primer on the F-35's Electrical Power Systems…

And the problems therein, go read Bill Sweetman's latest on the latest problem with the Joint Strike Fighter (JSF).

Basically, it comes down to using bleeding edge technology, which, when juxtaposed with frantic weight reduction efforts, creates an absolute mess, just as it has with the failed bulkhead, the 360 degree vision system helmet and HUDless cockpit, etc.:

Another observation -- relevant to future programs -- is that the electrical problems (both this one and the AA-1 incident) have arisen from the use of a new system which, while it may have net advantages, is not core to the aircraft's capability -- you could in theory build a short-takeoff-and-landing stealth fighter without it.

The same goes for another headache area, the wide-field-of-view video helmet and HUD-less cockpit. The lesson may be that any innovations that fall into the nice-to-have rather than mission-essential capability should be low-risk when you incorporate them into the design.

In the larger picture, this is actually the alpha and omega of weapons development.

Too much whiz-bang for too much bucks.