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  #21  
Old 04-11-2016, 10:03 PM
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Av8torTom Av8torTom is offline
 
Join Date: Nov 2009
Location: Yardley, PA
Posts: 1,100
Default AOA

For those of you with AOA, assign a specific angle to each Vspeed. Hold that AOA and the Vspeed will follow. For example if Vx is 8 deg AOA, go to and hold 8 deg, and the airplane will settle at Vx some moments later and there's no under shooting or over shooting the airspeed. Very handy at a short field with trees at the end. This is really what flying AOA is all about, not just for stall warning.
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  #22  
Old 04-14-2016, 04:39 PM
Soarandtow Soarandtow is offline
 
Join Date: Feb 2015
Location: Wynne, AR
Posts: 51
Default pdf report

Kelly please send me a copy as well mku2@hotmail.com
thanks
LD
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  #23  
Old 04-14-2016, 05:20 PM
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ArVeeNiner ArVeeNiner is offline
 
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Location: San Jose, CA
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Default

Quote:
Originally Posted by Soarandtow View Post
Kelly please send me a copy as well mku2@hotmail.com
thanks
LD
It has been sent.
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RV-9A

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  #24  
Old 05-09-2016, 09:26 AM
sibriggs sibriggs is offline
 
Join Date: Nov 2014
Location: Concord, NH
Posts: 101
Default Copy of report

Please send one to me also, thanks Steve Briggs
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  #25  
Old 12-06-2017, 02:31 AM
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rjcthree rjcthree is offline
 
Join Date: Jan 2007
Location: Bay Village, OH
Posts: 684
Default N183RC results

Thanks everybody for the help/info.

After IAS calibration and halfway through Phase 1, N183RC V speeds are as follows:

Vx = 75kt
Vy = 95kt
Vg = 80kt (Best glide defined as best distance)
Vg, 10 deg flaps = 75kt
The slope of the curves is very shallow around the respective optimal number, +/- 5kt on most V speed is within 10% of optimal. Based on the data, I could call Vy anywhere between 89kt to 98kt, because the curve is dead flat in the range, for operational purposes, I like the higher speed for cooling reasons. Coming out of a Warrior, the deck angle vs horizon at Vx is pretty mind boggling. AC is RV-9A, 1113 empty, o-320/160hp, fixed Sensenich.
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Last edited by rjcthree : 12-06-2017 at 06:38 PM. Reason: Bit more detail
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  #26  
Old 12-06-2017, 04:18 AM
terrykohler terrykohler is offline
 
Join Date: Jan 2005
Posts: 943
Default CAFE Report

Try this for the RV9A performance report

http://cafe.foundation/v2/pdf_cafe_apr/rv-9a.pdf

Terry, CFI
RV9A N323TP
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  #27  
Old 12-06-2017, 09:38 AM
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sirlegin sirlegin is offline
 
Join Date: Feb 2006
Location: Keller, Texas
Posts: 222
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6 years flying my 9A
0320 dual lightspeed, fuel injected, catto 3 blade

VNE Never Exceed Speed 210 mph
VNO Maximum Structural Cruising Speed 180mph
VA Maneuvering Speed 124mph
VFE Maximum Flap Extended Speed 95mph
Vy Best Rate of Climb 90mph
Vx Best Angle of Climb 80mph
Best glide speed 75-80mph
Vso Stall Speed, Landing Configuration 54mph
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  #28  
Old 12-06-2017, 09:44 AM
brad walton brad walton is offline
 
Join Date: Jul 2007
Location: Cypress, TX
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Default

I'm sure I'll be corrected if I'm wrong, but my recollection is that Vy equals best glide ratio and Vx equals minimum sink speed as well as being best angle and rate of climb speeds respectively.
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  #29  
Old 12-06-2017, 10:13 AM
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sirlegin sirlegin is offline
 
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Location: Keller, Texas
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Quote:
Originally Posted by brad walton View Post
I'm sure I'll be corrected if I'm wrong, but my recollection is that Vy equals best glide ratio and Vx equals minimum sink speed as well as being best angle and rate of climb speeds respectively.
You are wrong, but correct me if I'm wrong
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  #30  
Old 12-06-2017, 01:19 PM
moosepileit moosepileit is offline
 
Join Date: Dec 2010
Location: Floyds Knobs, IN
Posts: 169
Default

The best climb/best glide and best angle/min sink are starting points.

FAA sez:

"This is often referred to as best glide speed and, on most airplanes, it will be roughly halfway between Vx (best angle of climb speed) and Vy (best rate of climb speed). Keep in mind that this speed will increase with weight so most manufacturers will establish the best glide speed at gross weight for the aircraft."

https://www.google.com/url?sa=t&sour..._D_osCZnW3dTaV
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