McDonnell Douglas MD-XX
Type: Advanced technology medium-range airliner.
Program: Preliminary studies begun May 1991. Discussed with Finnair, SAS, and other airlines. Possible launch 1997 or later; first deliveries before 2002.
Current versions: Single-aircraft program to replace existing narrow body aircraft through 6 percent lower seat-mile costs, twin-aisle comfort and lower deck container capability features, and to replace early small wide-body aircraft through 10 percent lower trip costs and wider aisles. Initial version to seat 222 passengers (equivalent to Boeing 757) and 204 passengers (equivalent to Boeing 767).
Design features: Transcontinental, 200- to 220-passenger transport; later stretch up to 295 seats exceeds Boeing 767 capacity by at least 10 percent; advanced aerofoil and high-aspect ratio wing technologies reduce drag by 14 percent from current airliners. Mach 0.8 cruise; range 3,000 n miles (5,556 km; 3,452 miles); extended-range options up to 5,500 n miles (10,186 km; 6,329 miles); fuselage cross-section twin aisle oval 5.18 m (17 ft 0 in) wide, 5.41 m (17 ft 9 in) high, two LD2 containers side-by-side in underfloor cargo compartments. Carbon composite wing box; main objective cost reduction; fly-by-wire signaling for control, sensor, and data distribution.
Power plant: Two wing-mounted advanced high-bypass engines such as Pratt & Whitney Advanced Ducted Propeller (ADP).
Dimensions, external (provisional)
Wing span: 44.98 m (147 ft 7 in)
Wing aspect ratio: 11.14
Length, fuselage: 43.79 m (143 ft 8 in)
Length, overall: 44.96 m (147 ft 6 in)
Height overall: 14.76 m (48 ft 5 in)
Tailplane span: 13.36 m (43 ft 10 in)
Wheel track: 7.92 m (26 ft 0 in)
Areas (provisional):
Wings, gross: 181.6 sq m (1,955.0 sq ft)
Vertical tail surfaces (total): 37.2 sq m (400.0 sq ft)
Horizontal tail surfaces (total): 35.7 sq m (384.0 sq ft)
Source: Jackson, Paul ed.
Jane's All the World's Aircraft 1995-96 Jane's Information Group Ltd 1995 p. 604.
