Boeing SST 2707 Supersonic Aircraft. The American Challenge To The Anglo/French Concorde
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The Boeing 2707 was an
The Boeing 2707 was an American supersonic passenger airliner project during the 1960s.
After winning a competition for a government-funded contract to build an American supersonic airliner, Boeing began development at its facilities in Seattle, Washington. The design emerged as a large aircraft with seating for 250 to 300 passengers and cruise speeds of approximately Mach 3. It was intended to be much larger and faster than preceding SST designs such as Concorde.
The SST was the topic of considerable concern within and outside the aviation industry. From the start, the airline industry noted that the economics of the design were questionable, concerns that were only partially addressed during development. Outside the field, the entire SST concept was the subject of considerable negative press, centered on the issue of sonic booms and effects on the ozone layer.
A key design feature of the 2707 was its use of a swing wing configuration. During development the required weight and size of this mechanism continued to grow, forcing the team to start over using a conventional delta wing. Rising costs and the lack of a clear market led to its cancellation in 1971 before two prototypes had been completed.
It was to fly even faster than the Concorde, at speeds approaching Mach 3. It would have flown the distance from Los Angeles to New York in under two hours.
In 1962, the British and French announced a partnership to build the world’s first supersonic airliner, the Concorde. A few months later, the Soviets also jumped into the race with SST plans of their own supersonic airliner, the Tupolev 144. As America had watched these programs transform from concepts into serious enterprises, officials began to worry about maintaining America’s lead in civil aviation.
So in 1962, President Kennedy announced that the U.S. government would help fund the development of an American supersonic transport. Manufacturers were invited to participate in a design competition. Design entries from Lockheed (L-2000) and North American Aviation (NAC-60) were reviewed. After years of evaluation, Boeing’s 2707 was selected as the winning design.
But it turns out that building an SST significantly faster and larger than the Concorde would be enormously challenging, requiring completely new aviation designs and technologies. As the 1960s wore on, the Boeing 2707 program was plagued by technical setbacks, and the program’s ambitious goals were not being met. An anti-SST movement had grown around opposition to sonic booms and other environmental concerns.
General characteristics:
Capacity: about 277 passengers
Powerplant: 4 × General Electric GE4/J5P turbojets, 63,200 lbf (281 kN) thrust each
Performance
Maximum speed: Mach 2.7
Range: 4,000 mi (6,400 km, 3,500 nmi)
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