What is the relationship between weight and stall speed?

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Chris - 25 May 2008 10:01 GMT

What is the relationship between weight and stall speed?
ISTR a square law is involved, which might mean four times the weight
gives twice the stall speed.
Can anyone clarify?

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Chris

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The Natural Philosopher - 25 May 2008 12:58 GMT

> What is the relationship between weight and stall speed?
> ISTR a square law is involved, which might mean four times the weight
> gives twice the stall speed.
> Can anyone clarify?

Yup square law basically. square law of wing loading. with a bit of
adjustement to other things related to wing camber mainly.

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Dave (Sgt. Pepper) - 26 May 2008 16:12 GMT

> What is the relationship between weight and stall speed?
> ISTR a square law is involved, which might mean four times the weight
> gives twice the stall speed.
> Can anyone clarify?

Here's a reference ...

http://selair.selkirk.bc.ca/aerodynamics1/Lift/Page9.html

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Dave (Sgt. Pepper) Epsom, England
My photo galleries at http://www.pbase.com/davecq
"I will not tolerate intolerance ... Doh!!"

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Chris - 26 May 2008 20:30 GMT

>> What is the relationship between weight and stall speed?
>> ISTR a square law is involved, which might mean four times the weight
>>gives twice the stall speed.
>> Can anyone clarify?

>Here's a reference ...
>http://selair.selkirk.bc.ca/aerodynamics1/Lift/Page9.html

Thanks for both replies.
The reference is interesting, partly for its content - and partly
because the author apparently doesn't know the meanings of the
arithmetical terms "numerator" and "denominator"!

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Chris

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Model Forum / Radio Controlled / Air Models / May 2008

What is the relationship between weight and stall speed?