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jonboede(at)hotmail.com
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 Posted: Sun Feb 05, 2017 9:42 pm Post subject: Vr, Vx |
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Anybody got numbers they like for Vr and Vx in a CJ?
Jon
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Ernie
Joined: 11 Jan 2006
Posts: 513
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| Posted: Mon Feb 06, 2017 5:38 am Post subject: Vr, Vx |
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65 and 75 Knots for me.
On Mon, Feb 6, 2017 at 12:41 AM, Jon Boede <jonboede(at)hotmail.com (jonboede(at)hotmail.com)> wrote:
[quote]--> Yak-List message posted by: Jon Boede <jonboede(at)hotmail.com (jonboede(at)hotmail.com)>
Anybody got numbers they like for Vr and Vx in a CJ?
Jon
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yakman285(at)gmail.com
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| Posted: Mon Feb 06, 2017 5:51 pm Post subject: Vr, Vx |
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The Pilot's Manual states 150kph flap down, roughly Vx. Flaps up climb at Vy use 170kph. 160kph flaps down descent..For my M-14 powered CJ, I use 81 knots Vx. Vy at 90 to 91 knots
Craig Payne
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JL2A
Joined: 07 Apr 2015
Posts: 113
Location: Australia
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| Posted: Mon Jul 03, 2017 2:38 am Post subject: Re: Vr, Vx |
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| Quote: | | The Pilot's Manual states 150kph flap down, roughly Vx. Flaps up climb at Vy use 170kph. 160kph flaps down descent..For my M-14 powered CJ, I use 81 knots Vx. Vy at 90 to 91 knots |
Vy is 91 knots for stock 285hp then for 360hp Vy should be a bit higher. If my poor grasp on aerodynamics is correct. And assuming you are actually using the extra ponies stored in the M-14 (why wouldn't ya!)
For the same reason that Vy decreases with altitude for NA aircraft. I'd guess around 100KIAS would be closer with the extra thrust, better for cooling too.
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