Author Topic: Quick corner speed calc'  (Read 669 times)

Offline Klam

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Quick corner speed calc'
« on: October 12, 2012, 03:20:14 PM »
Hi,
I want to work out an approximate corner speed.
It was a long time ago and a vague memory but did I read a simple formula of stall speed x 2.45 ?
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Offline Debrody

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Re: Quick corner speed calc'
« Reply #1 on: October 12, 2012, 03:23:49 PM »
It sounds odd to me, but not an expert.
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Offline FLS

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Re: Quick corner speed calc'
« Reply #2 on: October 12, 2012, 03:54:49 PM »
Hi,
I want to work out an approximate corner speed.
It was a long time ago and a vague memory but did I read a simple formula of stall speed x 2.45 ?

That's correct. It's the square root of the wing loading in "G"s times the indicated stall speed at your weight and altitude. For corner speed it's 6 G because that's when we black out so it's our max sustainable G load. The square root of 6 is 2.4494 hence 2.45. If you are at a weight and altitude where you stall at 100 mph in straight and level flight then your corner speed is 245.

I believe you can also approximate the stall speed for any other wing loading the same way.  So if you wanted your stall speed for cornering at 3 G you get 173 mph, given the same 100 mph straight and level stall as the above example.

Since stall speed is linked to wing loading it also follows that at 0 G you can't stall. Since you aren't creating lift there is no lift to be disrupted.

Offline Klam

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Re: Quick corner speed calc'
« Reply #3 on: October 12, 2012, 05:17:37 PM »
Thanks FLS
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Offline BravoT

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Re: Quick corner speed calc'
« Reply #4 on: October 12, 2012, 07:40:12 PM »


Since stall speed is linked to wing loading it also follows that at 0 G you can't stall. Since you aren't creating lift there is no lift to be disrupted.

If you're trying to fly without creating lift I'm not sure that worrying about your stall speed is the most pressing issue to be dealt with :)

Offline FLS

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Re: Quick corner speed calc'
« Reply #5 on: October 12, 2012, 07:48:46 PM »
If you're trying to fly without creating lift I'm not sure that worrying about your stall speed is the most pressing issue to be dealt with :)

You avoid uncontrolled departure and maximize your acceleration.  It's like more cowbell.