Definitions
Wiktionary
- n. A unit of force equal to a mass of one avoirdupois pound times a standard acceleration of gravity, equal to about 4.44822 newtons. Symbol lbf or lbf.
Examples
“The simulator is capable of attaining pressures of 30,000 psig (pound-force per square inch gauge) at a rated temperature of 500 degrees Farenheit.”
“On Monday, not only did I lecture on the difference between weight and mass, but I did the whole spiel on the relation between pound-force (lbf), pound-mass (lbm), and slug (this is an engineering class, after all).”
“Yes, pound-force (the standard pound that your bathroom scale measures) is a force unit because gravity has been taken into account.”
“So under common conditions, a pound-mass weighs a pound-force, but when one is out of earth's gravity that equivalence fails.”
“The slug is the mass that gives rise to a pound-force under an acceleration of 1 ft/s/s.”
“During the tests at NASA's Glenn Research Center in Cleveland, Ohio, a 25 pound-force thruster testbed successfully demonstrated cooling with gaseous methane and gaseous oxygen, as well as rapid start and stop at simulated altitude conditions.”
“The company's TR408 second-generation, oxygen-methane 100 pound-force reaction control engine (RCE) was designed for the Propulsion and Cryogenics Advanced Development Project within NASA's Exploration Technology Development Program, and features robust operation over widely variable propellant conditions.”
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