[Milsurplus] Interesting web site - P-38 radio

[B. Smith]

My guess is that they installed an "Astro Compass" on the aircraft which 
allowed them to obtain a true heading from the sun using precomputed sun 
azimuth information for time and location along their track. This would 
eliminate all "charted magnetic variation errors"  and aircraft compass 
system errors as they would be dealing strictly with "true heading". 
Possible they may have also made one or two  observations  of the suns 
elevation and plotted it to cross check their dead reckoning information 
before visual sighting of land masses.  Never did like the term "Dead" 
reckoning.   :-)

breck k4che

   | On Dec 2, 2007, at 9:15 AM, Francesco Ledda wrote:
|
| >
| > I am sure that it was compass, watch and a little luck....
| >
| >@mailman.qth.net