ANP VS. SHUTTLE CARRIER

The plan for the ANP was to use one of the planes in a two stage space plane configuration. 

Assumed Dimensions of the Plane for TAN hanger

The scientists had made some assumptions about the dimensions and characteristics of the airframe. Each power package would need to be handled as a unit. A maximum of four engines per plane might be slung under the wing close to the fuselage. Chemical fuels would be auxiliary to the operation. The plane would weigh at least 600,000 pounds. It would extend 135 feet from wing tip to wing tip, be 52 feet wide at the tail, be 205 feet long, and be 53 feet high or higher at the tail.

(INEL, TAN, HANGAR 629 HAER NO. ID-3 3-A. (Page 32)

SHUTTLE CARRIER

General characteristics

Crew: 4: pilot, co-pilot, 2 flight engineers (1 flight engineer when not carrying Shuttle)

Length: 231 ft 4 in (70.5 m)

Wingspan: 195 ft 8 in (59.7 m)

Height: 63 ft 5 in (19.3 m)

Wing area: 5,500 ft² (510 m²)

Empty weight: 318,000 lb (144,200 kg)

Max. takeoff weight: 710,000 lb (322,000 kg)

Powerplant: 4 × P&W JT9D-7J turbofans, 50,000 lbf (222 kN) each

Performance

Cruise speed: Mach 0.6 (with Shuttle) (397 knots, 457 mph, 735 km/h)

Range: 1,150 mi (1,000 nmi, 1,850 km) while carrying Shuttle

Service ceiling: 15,000 ft (4,500 m) (with Shuttle)

The shuttle weighed 165,000 pounds.