PPRuNe Forums - View Single Post - How does KW relate to lbs thrust??
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Old 19th March 2001 | 12:21
  #6 (permalink)  
18Wheeler
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Some figures are waaaay off there, guys!
A 737 will take a LOT longer than 1320' to take off, that's only 400 yards!
Try about 1000+ yards as a minimum.

A couple of other figures to confuse the unwary -
- A WW2 Merlin at full power will suck about 0.5 lbs of air a second to make about 2000hp. A 747 engine will suck about 200 lbs of air a second in the cruise ...
- Most times the rule-of-thumb is 2.5 lbs of thrust for 1hp.
- I put a thing called a 'G-Tec' which is an accelerometer for testing the speed of a car on the windscreen of the 747 I fly and I got 72,000hp from it.