Descent Calculator

Date:         21 Nov 97 01:59:53 
From:         tedlandy@ozemail.com.au (Ted Landy)
Organization: OzEmail Ltd.
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I am trying work out how to create a small program to calculate
descent  profiles for aircraft to load into a handheld computer.
 I want to be able to enter height, speed, wind component and weight
to come up with a distance.
Originally I thought I could just enter a L/D ratio and presto come
with an answer. Unfortunately for me it is not so easy. For a given
IAS on descent the L/D seems to constantly change (increase).

Does anyone know of any useful formulas, available programs or have
suggestions that may be of use to me?

Ted