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05-16-2016, 06:05 PM
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Join Date: Jul 2007
Location: Madison, Wisconsin
Posts: 778
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Quote:
Originally Posted by Tom Martin
And Brian wins the award! I was wondering how long it would take before someone mentioned the ball. While it is certainly possible to stall an airplane with the ball in the "middle" it is unlikely that it will enter a spin as fast at this plane did.
And this is a major complaint that I have with our glass panels. The "ball" image in the average EFFIS is basically a waste of time. They are very small, almost an afterthougtht and typically the ball does not move very much, thus we tend not to pay attention to it.
Directly above my EFFIS and just below the glare shield I have an old fashioned ball type bank indicator. These are available from the large aviation parts suppliers, get the biggest one that will fit on your panel. Old school might just save your life.
I have a larger model in my plane, it is very visible, a constant reminder. It is mounted in my line of sight and on base to final turns I check the ball to make sure that I am not cross controlled. It is very easy to get things out of co-ordinated flight when you are at a strange airport, cross wind, crowds, etc. Does AirVenture come to mind...
this was an excellent video, typically on a base to final turn you are going to be around 500' or so agl and based on that video you would not have had time to recover even if you were right on top of it.
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Tom,
Ditto on the use an old-school ball; I'm always surprised how few RVs seem to have one. Mine is mounted on top of the glare shield and very easy to see. Its also never had a power failure!
The instructor in the video says that he's giving it a "big boot of inside rudder" or words to that effect. I've got to think this means the ball was way out to the right.
__________________
Alan Carroll
RV-8 N12AC
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05-16-2016, 06:46 PM
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Join Date: Jan 2005
Location: Twin Cities, MN
Posts: 1,565
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Quote:
Originally Posted by eddieseve
Note in the video the stall warning sounds after we are pointing at the ground 
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The Skyview system doesn't have a stall warning mechanism, per s?, but rather an AoA indicator. That the AoA indicator was not on sooner and wasn't a near-solid or solid tone at the break suggests that it has not been calibrated per Dynon's instructions.
Additionally, perhaps you want to configure it so it comes on sooner - bottom of the yellow, perhaps - so it starts warning you sooner.
__________________
Brad Benson, Maplewood MN.
RV-6A N164BL, Flying since Nov 2012!
If you're not making mistakes, you're probably not making anything
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05-16-2016, 08:42 PM
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Join Date: Mar 2006
Location: Australia
Posts: 775
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Eddie
Is this video going to be put on you YouTube channel?
I hope so as I find it easier to save a link to it on YouTube.
John
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05-16-2016, 08:55 PM
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Join Date: Mar 2010
Location: USA
Posts: 454
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Quote:
Originally Posted by vlittle
Yes, the rate of yawing is critical. You can fly an airplane cross-controlled at low airspeed (e.g. forward slip) but kicking out to get to coordinated flight too quickly can cause a spin.
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No, it won't start to spin no matter how fast you release rudder unless you release the ailerons first. Try it.
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05-16-2016, 09:07 PM
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Join Date: Jul 2005
Location: Denver, CO
Posts: 295
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Quote:
Originally Posted by Alan Carroll
Tom,
Ditto on the use an old-school ball; I'm always surprised how few RVs seem to have one. Mine is mounted on top of the glare shield and very easy to see. Its also never had a power failure!
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Some yarn on the windshield would be interesting for folks who are practicing this without a ball that's easily keep in view.
__________________
// corey crawford
// rv-7a (sold)
// denver, co @ KBJC
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05-16-2016, 11:41 PM
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Join Date: Mar 2009
Location: Sydney, Australia
Posts: 617
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Hi Guys
Firstly a response to Vern's question, yes I have calibrated the Dynon angle of attack system as per their instructions.
It generally drives me to distraction as its very sensitive to gusts etc.
If you watch the very first strait ahead stall you'll hear it starting to beep as I approach the stall, not sure how much more sensitive it could be.
For those that prefer youTube, I'll upload and add the link here when it's done
Cheers
__________________
Eddie Seve
Sydney Australia
First Flight 16th July 2012
RV-7 Phase 2, 30 Oct 2012
1100 hrs Feb 2020
Last edited by eddieseve : 05-16-2016 at 11:57 PM.
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05-17-2016, 02:44 AM
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Join Date: Feb 2016
Location: Perth, Australia
Posts: 3
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Hi Eddie,
Did you get a chance to add this to Youtube? I'd like to share with some people not on facebook.
Regards,
Scott
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05-17-2016, 03:57 AM
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Join Date: Mar 2009
Location: Sydney, Australia
Posts: 617
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Hi Scott,
Sorry, work got in the way, I'll upload tomorrow morning and add the link then.
So if you check back in about 12hours.
Believe it or not our home internet is so slow I need to do it at work.
Cheers
__________________
Eddie Seve
Sydney Australia
First Flight 16th July 2012
RV-7 Phase 2, 30 Oct 2012
1100 hrs Feb 2020
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05-17-2016, 06:26 AM
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Join Date: Dec 2009
Location: St Louis, MO
Posts: 957
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Sent the video link to some flying buddies and got this response from one of them. Food for thought........
Oly,
Video was well done regarding the dangers of using rudder in a high alpha turn. Anyone with a license should know that is how you enter a spin. Oh, I forgot, nobody learns spins anymore.
Considerations: Learn to fly with the ball centered particularly as angle of attack (alpha) increases. If the stall warning is going off or AOA is red, correct the problem instantly. Train for engine failure on TO: at altitude learn how much altitude is required to execute a 'return to runway' maneuver. If you don't have that height don't attempt it. An airplane with 0 G cannot stall or spin. If the airplane starts break, unload the stick and recover straight ahead. Practice slow flight (at altitude) to know your airplane. Take some spin training. Since most RV's operate from long runways just carry lots of speed (100 MPH) in the pattern allowing it to bleed off in a long landing flare -- landings for dummies but don't do it on a short field.
Just thinking. Fly safe.
Bill
__________________
RV-8, Flying
Previous airplanes: Corby Starlet, Citabria, Cessna 140, Vari-Viggen, RV-3, RV-4
RV grin every flight
"Sure is nice to have smart friends"
2018 dues paid
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05-17-2016, 07:51 AM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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I remember back in the 80s when I was working on my PPL, I requested to learn spin recovery, usually my instructor would take the controls and demo every move first, this time he did not, he put me in a nose high power off stall condition and then told me to input L rudder? within an instant we flipped inverted for a second and all I saw was the ocean spinning at me, I remember him talking me through the recovery process. I went out practicing all the time after that. I think it should be required.
__________________
7A Slider, EFII Angle 360, CS, SJ.
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