The space shuttle was an awesome machine, I had the privilege of flying with one of the space shuttle pilots for two years.
I never tired of his stories of flying it.
The initial approach speed for re-entry was over 17,000 mph and the final approach speed at gear extension was 270 mph with touch down at 215 mph.
The rate of descent during the final approach was close to 10,000 feet per minute.
The latter part of the approach and landing was generally hand flown.
So from that we can be certain that landing without power is actually normal procedure in some cases.
