will an i pad charger work using 115 volt 400 cycle power source?

Gotcha. You'll probably need to look for an outlet which is rectified to standard voltage and Hz. I've found posts on other sites that claim you can use a standard AC adapter on 115v/400Hz outlets, but I wouldn't want to risk it myself. See:

http://www.pprune.org/archive/index.php/t-246234.html

Regards.

I know it's an old thread but 110V 400Hz is the standard power output on most commercial airplanes. Technically you're not supposed to use it for iPhone/iPad charging since the chargers are rated at 110-220 and 50-60Hz, HOWEVER, yes it will work even though it's probably not a smart thing to do. I can attest to hundreds of flights where I've personally witnessed passengers as well as crew members charging their iPhones and iPads from outlets marked 110V 400Hz.

No. The charger works only with 100-240 volt 50-60Hz sources.

If I may ask, what in the world would you be using that would provide AC at 400 Hz?

Regards.

The solution for Boeing 737 cockpit charging is not the 400hz outlet. The solution is using the 28VDC outlet with this adapter:

http://www.flyboys.com/b7n7-t-220.html