![]() ![]() The force is calculated as F=ma or force= mass x acceleration. Now can a pilot in outer space feel g force via acceleration? yes. That force is proportional to the sheer force and of acceleration. G force in atmosphere or closer to the earth is felt because the pilot is being pressed against the airplane seat or airplane itself. That does not mean that there is no g force at all. Generally speaking, there is no felt zero G force in space because objects there are technically in free fall. The absolute correct answer is depends on circumstance. If you intended to fly to a star outside our solar system very quickly (within months), then rapid acceleration causing high $g$ forces would be necessary. The thrusters on space vehicles are, unlike jet engine thrusters within the atmosphere, not used for aerobatics and steep manouvers, but to gently alter course at low $g$ forces. The astronauts feel zero gravity inside this 'falling' vehicle. That is just enough to balance the earth's gravitational pull on the space station at its altitude ($408km$). Low orbital vehicles like the ISS space station float around the earth at about 7.7 km/s. Once in space orbit, there are generally no manoeuvres that effect high $g$ forces. $$g_$$įor space flight, up to about $3g$ are experienced in order to reach space. Similarly, the sharper the turn, the smaller $r$ is, the greater the acceleration.ĭuring the vertical ascent of a fighter aircraft, $g$ force is a sum of the earths gravitational force plus the acceleration of the fighter aircraft upwards: The larger $v$ is, the higher the $g$ force during the turn. For a sharp turn at linear velocity $v$ and radius $r$, the $g$ force is acceleration $a$ in the equation: ![]() Within the atmosphere, there is plenty of scope for high $g$ forces during fighter aircraft manoeuvres including aerobatics.įor fighter aircraft, which generally experience the highest $g$ forces for flight within the earth's atmosphere, the main causes of high $g$ forces are sharp turns, rapid acceleration/decceleration and upward acceleration. The main reason why high $g$ forces are generally not experienced in space as opposed to within the earth's atmosphere is modes of flight. ![]()
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