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The Pilots Desk
AirlinersProposed US supersonic airliner design

Lockheed L-2000

Lockheed L-2000

The Lockheed L-2000 was Lockheed Corporation's entry in a government-funded competition to build the United States' first supersonic airliner in the 1960s. The L-2000 lost the contract to the Boeing 2707, but that competing design was ultimately canceled for political, environmental and economic reasons. In 1961, President John F. Kennedy committed the government to subsidize 75% of the development of a commercial airliner to compete with the Anglo-French Concorde then under development. The director of the Federal Aviation Administration (FAA), Najeeb Halaby, elected to improve on the Concorde's design rather than compete head-to-head with it. The SST, which might have represented a significant advance over the Concorde, was intended to carry 250 passengers (a large number at the time, more than twice as many as the Concorde), fly at Mach 2.7-3.0, and have a range of 4,000 mi (7,400 km). The program was launched on June 5, 1963, and the FAA estimated that by 1990 there would be a market for 500 SSTs. Boeing, Lockheed, and North American officially responded. North American's design was soon rejected, but the Boeing and Lockheed designs were selected for further study.

Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.

Manufacturer
Pratt & Whitney
Category
Airliners

Specifications

Cruise speed
1,730 kt
Max speed
2,615 kt
Range
4,000 nm
Service ceiling
76,500 ft
Max takeoff weight
590,000 lb
Empty weight
238,000 lb
Powerplant
4 × General Electric GE4/J5M or Pratt & Whitney JTF17A-21L afterburning turbojet engines
Engines
4
Seats
273
Length
273 ft
Wingspan
116 ft
Height
46 ft

Specifications are approximate and may vary by variant. Compiled from Wikipedia (CC BY-SA).

Reference and training only. Specifications vary by variant — consult the manufacturer and the official documents.