12/31/2023 0 Comments G force airplaneIn both cases, the aircraft and the satellite experiences "micro-gravity" (which means a residual gravity in the order of some $\small \mu g$). While the gravity still exists, its effects are cancelled by accelerating with the "gravity flow". This is also what some aircraft do for 30s to train astronauts (" 0G flight"). When we jump from some height we're in micro-gravity for a short time, and then at the hospital if we underestimated the time. Gravity wants us to fall, then we just remove everything preventing us to fall, starting with the floor and/or the ground. Remove everything preventing gravity to fully act, this is "the free fall way". The satellite own speed and its circular trajectory create (as viewed from the satellite) a centrifugal acceleration exactly opposite to gravity acceleration. Remove gravity with another exactly opposite acceleration. So there are only two means to escape gravity acceleration effects: gravity acceleration, but not limited to it) and it tries to oppose this acceleration. We're not flying very tight curves that could create a free fall (but only for a few seconds anyway).Įverything is weighty everywhere in the cosmos as soon as it is subject to some acceleration (e.g.We're not at orbital speed which is about 28,460 km/h. We're not free falling (the cabin floor prevents this to happen).Exactly for the reasons we feel gravity when traveling on a train:
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