| THRUST EQUATION | ||
Calculation of rocket engine thrust is extremely important. Exact values of thrust are needed to determine rocket size, launch weight, trajectory into orbit, orbital maneuvers, and re-entry and landing. The equation used to make these calculations is called the rocket thrust equation and consists of the sum of the pressure thrust and momentum thrust. Since pressure thrust can often be very small, some discussions on rocket thrust may only include momentum thrust, as it is the primary contributor to rocket thrust. But no matter how small, the pressure thrust does contribute to the rocket thrust. It must be included in the thrust equation to precisely calculate total rocket thrust. |
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