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TruAirspeed

TruAirspeed is a True Airspeed Calculator for the iPhone and iPad

TruAirspeed is a True Airspeed Calculator for the iPhone and iPad

TruAirspeed

by James Petty
TruAirspeed
TruAirspeed
TruAirspeed

What is it about?

TruAirspeed is a True Airspeed Calculator for the iPhone and iPad. It's a bit different from other true airspeed calculators, in which the pressure altitude is an input. This requires resetting the altimeter to the standard sea level pressure of 29.92"Hg to read the pressure altitude. With TruAirspeed, you input the indicated altitude and the Kollsman window's pressure setting โ€” the app then calculates the pressure altitude, density altitude, true airspeed and mach number for you.

TruAirspeed

App Details

Version
2.0
Rating
(8)
Size
8Mb
Genre
Utilities
Last updated
June 25, 2024
Release date
April 10, 2014
More info

App Screenshots

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TruAirspeed screenshot-1
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TruAirspeed screenshot-4

App Store Description

TruAirspeed is a True Airspeed Calculator for the iPhone and iPad. It's a bit different from other true airspeed calculators, in which the pressure altitude is an input. This requires resetting the altimeter to the standard sea level pressure of 29.92"Hg to read the pressure altitude. With TruAirspeed, you input the indicated altitude and the Kollsman window's pressure setting โ€” the app then calculates the pressure altitude, density altitude, true airspeed and mach number for you.

The calculations involved take full account of compressibility effects, but not shock waves, so it's limited to subsonic, non-transonic flight only.

You have a choice of units for inputs and results, and you may choose either a calculator-style keypad (top row: 7-8-9) or a telephone-style keypad (top row: 1-2-3). You may also set a correction factor for your bird's airspeed indicator/pitot-static system, if you know it (mine is 0.95).

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