http://www.androidzoom.com/android_applications/productivity/aircraft-horizon_zcuz.html


  Robin Bergland.

  That would be worth buying a small Android tab just for that.

  http://www.everbuying.com/smlclass854.html?gclid=CJr9qfbE7awCFUWMtgodigzI9A


  Paul Lamar


 "Aircraft Horizon provides pitch and roll information, based upon the
 orientation of your phone depicted as a typical aircraft artificial
 horizon."

 Obviously not gyro-based, just the internal accelerometer. That's a
 seriously fatal flaw.

 -Chris W

 Why?

 Paul Lamar

An accelerometer-based instrument displays the resultant of forces, so a
coordinated turn would show the wings to be level, as the sum of the
gravity vector and the centripetal force of the turn point to the bottom
of the airplane.
Victor Roberts


That is  assuming steady state but these are rate sensors I think
so the rates are integrated to get position. Check out WingX. I am not totally
convinced until I see it working in an aircraft.

http://www.youtube.com/watch?v=EItR32hxItw


Back in the old days before GPS airliners used three Honeywell $100,000 ring laser
rate gyros that got them within a few miles on a trip from SFO to Hong Kong.

These were not sold to the Russian's :) They were also used in boomers.
Lamar Instruments computerized speed and distance measuring equipment
was used to check them. If a missile missed Moscow it was my fault :)

http://www.rotaryeng.net/IEEE-road-test-sys.pdf

Paul Lamar