2006-12-23 06:06:41 · 3 answers · asked by Perks L 1 in Cars & Transportation ➔ Aircraft
It is measured with a device similar to a bathroom scale mounted behind it in a test cell.
However, the engine's thrust is quite different than it would be in flight and installed on the aircraft. A 'bell-mouthed' inlet is used for maximum static thrust (aircraft use divergent ducts to increase high-speed thrust at the cost of static-thrust performance). Also the engines are tested at ISA (15C/59F, dry air, sea level pressure, etc). This gives a standard basis for engines to be compared and matched to aircraft.
In the air, thrust is indirectly measured by a combination of Engine Pressure Ratio (between the inlet and exhaust), fuel flow, and engine speed.
2006-12-23 06:51:27 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The wright brothers came up with this... by taking a large cale and tying it to the aircraft... the amount the aircraft (or engine) moved the scale in pounds.. gives us the "pounds of thrust"
2006-12-23 07:57:29 · answer #2 · answered by Dport 3 · 0⤊ 0⤋
pounds of thust, or kilonewtons.
The most effective way to measure thrust is by testing the engines while they are on a stand by neasuring the force it exerts on the stand.
2006-12-23 10:49:53 · answer #3 · answered by Doggzilla 6 · 0⤊ 0⤋