iÂ·deÂ·a. n. 1. Something, such as a thought or conception, that is the product of mental activity. 2. An opinion, conviction, or principle: has some strange political ideas. 3. A plan, purpose, or goal: She started school with the idea of becoming a doctor. 4.
The direction of the thrust is normally along the longitudinal axis of the rocket through the rocket center of gravity. But on some rockets, the exhaust nozzle and the thrust direction can be rotated, or gimbaled. The rocket can then be maneuvered by using the torque about the center of gravity. The magnitude of the thrust can be determined by the general thrust equation.
Tilted blue arrow indicatesthe direction of the bulletâs velocity âu 0 âu wind in the referenceframe of the wind, it is given by the vector diï¬erence of thebulletâs velocity âu 0 with respect to the ground and the velocityof the wind. The easiest way to proceed is illustrated with Fig.