#Angle of Attack (AOA): radians to indication

1 messages · Page 1 of 1 (latest)

frail yoke
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I'm looking for the parameters to turn the (A:ANGLE OFATTACK INDICATOR, Radians) aircraft var into the correct colors/icons for an Angle of Attack instrument. I know broadly that the indications are around 14 degrees for red, 11-14 for warn, 7-11 for blue, and <7 for cruise. But where do I find the proper values to use in the conversion? I assume they're somewhat different for each plane. I'm primarily interested in the steam-gauge C172 for now.

I could just experiment with the external view AOA and the variable value, but hoping for a more elegant solution.

I've searched HubHop and the web and come up empty, but I'm guessing some of you have done it here.

ivory jackal
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try just changing the variable units
(A:ANGLE OF ATTACK INDICATOR, degree)

frail yoke
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I can convert radians to degrees easy enough. Here's what I'm doing: Round(180 - ($ * (180/3.14159)),1) What I'm wondering is (for example) what is the right number to light both halves of the "meatball". In 2020 and the steam gauge 172, I see a value on screen of "6 degrees", and this formula gives me 21.4 degrees.

ivory jackal
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look in the Dev Mode Behaviors and find out what the aircraft does

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I dont fly the C172. what is the meatball?

frail yoke
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If you go into any plane in the external view, it's at the bottom in the AOA indicator.

ivory jackal
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for example this is taken from the CJ4 that has just three leds

frail yoke
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So, I want to make a physical AOA gauge shown here.

ivory jackal
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this is the middle led code.