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Conversion from kN to lbs of thrust?

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Conversion from kN to lbs of thrust?

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Old 20th Jan 2001, 09:23
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PFM
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Question Conversion from kN to lbs of thrust?

Does anyone know the conversion formulae from kN to lbs of static thrust?

I.e. CFM56-5A1 produces 111.20 kN. What is that in Lbs?

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Howzit work? PFM.
 
Old 20th Jan 2001, 13:36
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Genghis the Engineer
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As a general aide memoire, a Newton is about the weight of a small apple. More accurately, there are g Newtons in a kg at 1g.

So...

111.20kn = 111,200 N

divide by g (9.80665) and you get 11,339kgf

to convert from kg to lbf, multiply by 2.2

Giving 24,946 lbf


About 25 thousand pounds of thrust.

Basic O level physics really.

G

 
Old 20th Jan 2001, 14:11
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PFM
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Thanks Ghengis!
 
Old 20th Jan 2001, 16:38
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Sick Squid
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Nice on Genghis!

Being one who is after the easy life and ballpark answers, I've always used divide by 10, then multiply by 2. I always wondered where the 10 came from. But this is from one who converts centigrade to fahrenheit by doubling it and adding 30.

Long live the 3-times table!

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