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Old 04-15-2017, 09:15 AM
Vac Vac is offline
Join Date: Jul 2009
Location: Niceville, Florida
Posts: 533
Default ON SPEED Angle of Attack Video

Hi Folks!

Over the past year, we have been experimenting with an aural AoA system. I thought an RV-focused training video that illustrates how ON SPEED can be applied during different phases of flight might be of interest to some of the folks in our community:

There are FAQs at the end of the video that answer some of the questions we've had about the system, the most prevalent of which is "is the tone that loud in the cockpit?" (no, it's not). I included a short clip that attempts to convey what the aural system sounds like at ambient cockpit noise level.

We are continuing to experiment with different user configurations, but this video uses the standard aural logic that allows the pilot to hear the entire back side of the drag curve, as I thought that is the best way to convey some of the basic concepts of flying AoA. I realize the airspeed/AoA debate has been raging since about 1903, but the purpose of this training video is to simply illustrate the concept of flying ON SPEED, and how it's applied as a technique to help maintain aircraft control and optimize performance. The tactical advantage of an aural system, is that you don't have to look inside the cockpit.

If you've got a properly calibrated AoA system in your RV, you can achieve much, if not all of the utility demonstrated in the video.

Fly safe,

Mike Vaccaro
RV-4 2112
Niceville, Florida

Last edited by Vac : 08-07-2018 at 09:25 PM.
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Old 04-15-2017, 01:17 PM
seward747 seward747 is offline
Join Date: Jan 2005
Posts: 210
Default AOA

Awesome video and demo, Mike! Those of us who flew AOA back in a previous life know flying AOA makes soooo much sense. I knew F-4 was first to use tone set up; were there others? None of the Navy stuff I flew had tone, just the glareshield index and panel steam gauge.
The tone system has so much safety potential for this community (works well in a dogfight too), we could really use an out of the box solution here.
Thanks for posting, will be looking for more!

BTW - love your "gear down" CTAF call in the pattern - you can take a guy out of the military, but you can't take the military...........

Seattle area, -4, wings
old A-6 guy
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Old 04-15-2017, 09:27 PM
RV6_flyer's Avatar
RV6_flyer RV6_flyer is offline
Join Date: Jan 2005
Location: NC25
Posts: 4,008

Great work Vac.

Would be great if Garmin, AFS, Dynon, GRT, MGL, etc. incorporated this in their EFIS.

Sounds like a simple DIY project for Dynon users. I am wondering how much work it would take to get it to work with all manufacturers stuff.
Gary A. Sobek
NC25 RV-6
3,500+ hours
Where is N157GS
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
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Old 04-15-2017, 09:56 PM
longline longline is offline
Join Date: Sep 2014
Location: silverdale, WA
Posts: 208
Default Great

introduction to AOA aided maneuvering. When I get to fly my Dynon system I know I will be envious of your tone logic, but I think the basics apply to the plain Jane Dynon system. Another arrow in the quiver of flight safety.
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Old 04-16-2017, 12:12 AM
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rv8ch rv8ch is offline
Join Date: Feb 2005
Location: LSGY
Posts: 5,013
Default well done

Well done video, and the idea and implementation are great.
Mickey Coggins
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Old 04-16-2017, 02:40 AM
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jjconstant jjconstant is offline
Join Date: Dec 2006
Location: Oakland CA
Posts: 771

great info...thanks!
All Best

Jeremy Constant
RV7A "Stella Luna" ECI IO-360 WW200RV Pmags 360hrs
VAF 2019 paid plus some for those who can't
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Old 04-16-2017, 07:12 AM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,474

Thanks for putting the video together. Very informative and well done.
RV-8 #81077 Super Slow Build
Dynon Skyview HDX, Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
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Old 04-16-2017, 07:35 AM
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BillL BillL is offline
Join Date: Sep 2007
Location: Central IL
Posts: 6,847

Impressive Mike, thanks. A real time and spot on commentary! I like the little image of you in the AI during maneuvering.

I flew on the gulf coast out of Brookley in the mid 80's and my instructor got me to saying "gear down and locked" as cleared for the approach as many of the controllers were military and accustomed to hearing it. Even for the 182.
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Old 04-16-2017, 09:41 AM
Chkaharyer99 Chkaharyer99 is offline
Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 883


Thank you for sharing the video.
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Old 04-16-2017, 11:40 AM
Waco01 Waco01 is offline
Join Date: Jan 2005
Posts: 33
Default AOA

Mike, I notice that you are using one of the serial outputs from the Dynon 10A. Can you tell me which one, serial 1 or serial 2 ?
Val k
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