the.com/liftoff
the precise instant gravity files an official complaint and loses.
means The moment a rocket or aircraft leaves the ground and begins to ascend.
from A plain English compound of "lift" + "off," both ancient Germanic words — "lift" is related to Old Norse "lypta," to raise. The fused noun "liftoff" is a 20th-century child of the rocket age, rising into common use alongside the space programs that gave it a literal job to do.
- thrust math
- engines must beat the rocket's full weight to move
- max-q
- peak aerodynamic stress hits roughly a minute up
- sound suppression
- thousands of gallons of water muffle launchpad shockwaves
- hold-down
- clamps confirm full thrust before releasing the rocket
- escape velocity
- about 25,000 mph fully breaks Earth's grip
for instance
apollo 11 — first crewed moon landing, july 20 1969
spacex falcon 9 — reusable rocket first launched december 2015
virgin galactic spaceshiptwo — first commercial spaceflight with richard branson, july 11 2023