View Full Version : 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.
Genghis the Engineer
20th Jan 2001, 13:36
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
Sick Squid
20th Jan 2001, 16:38
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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