Originally Posted by Wikipedia
SR-177 Projected Performance Data ...
Maximum speed: Mach 2.35
Service ceiling: 67,000 ft (20,422 m)
Rate of climb: 60,000 ft/min (300 m/s)
Time to altitude:
brake release to 20,000 ft (6,100 m) - 1 min 27 s
brake release to 40,000 ft (12,000 m) - 2 min 3 s
brake release to 60,000 ft (18,000 m) - 3 min 6 s
brake release to 70,000 ft (21,000 m) - 3 min 51 s
Level acceleration at 80,000 ft (24,000 m) from top of climb at Mach 1.4 to Mach 2 - 1 min 6 s
Radius of turn (at Mach 1·6 at 60,000 ft (18,000 m)) - 24,000 ft (7,300 m)
Rocket full power endurance - 7 minutes