Hubble orbit?
On Mar 23, 1:14*pm, John Doe wrote:
wrote:
No vehicle has that capability to do that in LEO. *The impulse
requirements are large. *GSO spacecraft do it at attitude where the
velocity requirements are much smaller
At what point do they adjust their orbit during launch ?
Do they fly straight east from 28.5 and "turn" once they reach the
descending node at equator ?
Or do they fly south east on launch until they reach equator and then
turn where they accelerate into proper due east ?
Or do they actually reach 28.5 LEO, and only while boosting to geosync
altitude do they adjust the orbit to become equatorial ?
Neither of them
They fly near due east and enter a LEO orbit of around 28.5 (for less
than a quarter of an orbit). When the vehicle crosses the equator,
the upperstage fires to put the spacecraft in a GTO. Upon apogee, the
spacecraft fires its propulsion system to zero out the inclination and
raise the perigee to GSO altitude.
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