jnmeade
Active Member
I'd like to display the AOA information from my SV D1000T on a device that sits on the glare shield. Does anyone of such an arrangement and what wiring is required?
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
AOA Display On Glare Shield?
- Thread starter jnmeade
- Start date
You could use a Arduino computer, but it would involve some design and software programming.. Check out GitHub - flyonspeed/OnSpeed-Gen2: OnSpeed Gen2 - AOA aural indicator for flying "On Speed" with onboard sensors This is a company that has designed and distributes plans for construction of a separate component system that consumes the AOA and Pitot pressures from the Dynon Pitot probe and uses them to generate a arbitrary tone schedule in the aircraft intercom. I would guess it could be modified to produce a serial interface signal containing AOA in whatever units you wanted to be displayed by a projector on the inside of the canopy or glare shield.
This aural tone is amazingly useful all by itself, once you get used to it, and it has the advantage that you can digest the information without looking inside the cockpit or at any specific instrument (wherever it might be mounted/displayed) because the information is coming in your ear.
One suggested tone schedule (modeled on the one used in McDonnell Douglas F-4 Phantom) is:
Below about 50% of stall AOA (or below L/Dmax AOA) - Quiet -No tone is generated..
From 50% of stall up to just below Approach speed AOA - a 400 Hz tone pulsing at an increasing pulse repetition frequency (PRF) starting at about 1 pulse per second and increasing to 8-10 pulses per second hjust below Approach AOA.
From just below Approach AOA, to just above Approach AOA, (corresponding about a 4-5 knot range of airspeeds) a solid continuous 400 hz tone.
Above the AOA representing slightly below approach speed, a higher frequency (about 1500 Hz), High PRF (20 pulses per second) tone, to warn of impending stall.
This aural tone is amazingly useful all by itself, once you get used to it, and it has the advantage that you can digest the information without looking inside the cockpit or at any specific instrument (wherever it might be mounted/displayed) because the information is coming in your ear.
One suggested tone schedule (modeled on the one used in McDonnell Douglas F-4 Phantom) is:
Below about 50% of stall AOA (or below L/Dmax AOA) - Quiet -No tone is generated..
From 50% of stall up to just below Approach speed AOA - a 400 Hz tone pulsing at an increasing pulse repetition frequency (PRF) starting at about 1 pulse per second and increasing to 8-10 pulses per second hjust below Approach AOA.
From just below Approach AOA, to just above Approach AOA, (corresponding about a 4-5 knot range of airspeeds) a solid continuous 400 hz tone.
Above the AOA representing slightly below approach speed, a higher frequency (about 1500 Hz), High PRF (20 pulses per second) tone, to warn of impending stall.
jnmeade
Active Member
I'll have to look into the tone setup and see if that will help. My pitot tube is the Flight Design heated version. I'll try some things while flying later today.