Flying Utilities by Chris Parker
A small collection of flying utilities for the Psion Series 3
Free
Version 1.0, 11 August 1993


Installation.
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1. Copy the following files into a directory called "Flying". For "permanent" installation use a     
Flash SSD:
  Alt.OPO
  ETP.OPO
  Fuel.OPO
  PNR.OPO
  XWind.OPO
2. Copy "Flying.OPA" into directory "APP" on the same SSD as above.
3. Select "Install application" (PSION-I) from the system screen and select "Flying.OPA". The icon is my attempt at a Stearman.


Running the Utilities.
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1. Press "Enter" over the Flying application - a flying programs menu appears
2. Use the cursor keys to select the program you wish to use or press "Esc" to exit.
3. In each utility enter your variables as requested in the dialog box. Pressing "Enter" displays the result. With the result in view, pressing "Enter" takes you back to the dialog box and retains your previous values, "Esc" exits to the flying programs menu.


The Utilities.
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The utilities are:
1.  Crosswind (XWind). Enter: wind direction, wind speed, runway QDM, crosswind and tailwind limits. Results: crosswind and head/tailwind components, maximum wind strength before crosswind or head/tailwind limits are exceeded (for the given direction).

2. Density Altitude (Alt). Enter: airfield elevation, airfield QNH (hPa), outside air temperature (Centigrade). Results: ISA deviation, pressure altitude, density altitude.

3. Equi-Time Point (ETP). Enter: leg distance, groundspeed out, groundspeed home, outbound ground speed (groundspeeds out and home are groundspeeds *after* the engine failure or depressurisation, outbound groundspeed is the groundspeed *before* the failure). Results: distance to ETP, time to ETP.

4. Fuel (Fuel). Enter: fuel units (US gallons, Imperial gallons, pounds, litres, kilograms), fuel quantity, specific gravity (default SG is for 100LL). Results: fuel quantity in all units.

5. Point of No Return (PNR). Enter: start fuel (any units), reserve fuel, groundspeed out, fuel flow out, groundspeed home, fuel flow home. Results: distance to PNR, time to PNR, fuel remaining at PNR, return time from PNR. N.B. fuel can be in any units (gallons, 1000s of pounds etc.) but fuel flow must be in the *same* units...


Comments.
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This application is free, but I retain copyright. Please keep all files together. Please let me know of any bugs or comments (good or bad) to:

Chris Parker
3, 12th Street
Hong Lok Yuen
Tai Po
New Territories
Hong Kong

Compuserve ID: 100267,102
Fax: Hong Kong (+852) 650 4292