"Hallerb" wrote:
The interesting concept thread has a proposed propulsion system that could
move
hubble to a near ISS orbit for easy servicing. It could then be updated
indefinetely.

I believe this is a excellent cost effective idea and would make retrieval
easy
too

This is completely impractical from an orbital mechanics standpoint, as well
as a safety standpoint.

It is cost prohibitive to move HST's inclination that much, and once "near
ISS" would steadily move away from ISS without very costly maintenance
thrusters, which (of course) would degrade the scientific merits for the
telescope *in the first place*.

Roger
--
Roger Balettie
former Flight Dynamics Officer
Space Shuttle Mission Control
http://www.balettie.com/