On Tue, 20 May 2008 13:55:43 -0500, "Danny Deger"
wrote:

Look at the link for a picture of my manual aviation computer. It has two
different places to put in pressure altitude and temp to get density
altitude and convert airspeeds. Can anyone explain the correct use of these
two similar functions?

http://flickr.com/photos/26467772@N05/2508589733/

Way too simple---read the print on the disk beneath the input windows
for each section--one place gives you density altitude as the product,
the other gives you airspeed and some other things listed which my
aging eyes could not make out in the picture.

Now, turn it over and figure out how to do a point-to-point using the
square grid in the bottom third of the slide on that side....

Drift and heading stuff using the back side of the disk is too easy.

Typical driver today probably never even gets one of those issued.

Ed Rasimus
Fighter Pilot (USAF-Ret)
"When Thunder Rolled"
"Palace Cobra"
www.thunderchief.org