Oleg Zabluda's blog
Tuesday, November 20, 2012
 
X-15 vs SpaceshipOne
X-15 vs SpaceshipOne

North American X-15 (1959-1970)
Crew: one pilot
Length: 50 ft 9 in (15.45 m)
Wingspan: 22 ft 4 in (6.8 m)
Wing area: 200 ft2 (18.6 m²)
Empty weight: 14,600 lb (6,620 kg)
Loaded weight: 34,000 lb (15,420 kg)
Max. takeoff weight: 34,000 lb (15,420 kg) - 57,000lb (25,900 kg)
Powerplant: 1×Thiokol LOX/NH3 liquid-fuel rocket engine (31,300 kgf)
Isp: 279 s
Burn time: 87-150 seconds
Thrust/weight: 2.07-4.0
Maximum speed: Mach 6.72 (4,520 mph, 7,274 km/h)
Service ceiling: 354,330 ft (108 km) . Could go to 120km, but couldn't reliably reenter.
Range: 280 mi (450 km)
Rate of climb: 60,000 ft/min (18,288 m/min)
Wing loading: 170 lb/ft2 (829 kg/m²)


Scaled Composites SpaceshipOne (2003-2004)
Crew: one, pilot, 2 passengers
Length: 28 ft (8.53 m) ()
Wingspan: 16 ft 5 in (8.05 m)
Wing area: 161.4 ft² (15 m²)
Empty weight: 2,640 lb (1,200 kg)
Loaded weight: 7,920 lb (3,600 kg)
Powerplant: 1×SpaceDev N2O/Rubber Hybrid rocket motor, 7,500 kgf
Isp: 250 s
Burn time: 87 seconds
Thrust/weight: 2.08
Maximum speed: Mach 3.09 (2,170 mph, 3,518 km/h)
Service ceiling: 367,360 ft (112 km)
Range: 40 mi (65 km)
Rate of climb: 82,000 ft/min (416.6 m/s)
Wing loading: 49.07 lb/ft² (240 kg/m²)

X-15 altitude records: The FAI set the limit of space at 100 km. Two of X-15 flights went higher in 1963 (105.9 km and 107.8 km), thus not qualifying for airplane altitude records. Since 1962, X-15 holds world altitude record of 95.9 km. This record can be beat only once. Beating it would require minimum 3% improvement, i.e. 98.8 km. Next 3% improvement would be a disqualifying 101.7 km.

X-15 holds an official world record for the fastest speed ever reached by a manned aircraft of Mach 6.72 since 1967. 

http://en.wikipedia.org/wiki/North_American_X-15
http://en.wikipedia.org/wiki/List_of_X-15_flights
http://en.wikipedia.org/wiki/SpaceShipOne
http://en.wikipedia.org/wiki/North_American_X-15

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