- published: 16 Mar 2014
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The Lockheed L-2000 was Lockheed Corporation's entry in a government-funded competition to build the United States' first supersonic transport (SST) in the 1960s. The L-2000 lost the contract to the Boeing 2707, but that competing design was ultimately cancelled for political, environmental and economic reasons.
In 1961, President John F. Kennedy committed the government to subsidizing 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 upon 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 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.
The Boeing 2707 was the first American supersonic transport (SST) project. After winning a competition for a government-funded contract to build an American SST, 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. This made it much larger and faster than preceding SST designs like Concorde.
The SST was the topic of considerable concern within and outside the aviation industry. From the start the airline industry had 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 planform. 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.
The Lockheed L-1011 TriStar, commonly referred to as the L-1011 (pronounced "L-ten-eleven") or TriStar, is a medium-to-long-range, wide-body trijet airliner. It was the third widebody airliner to enter commercial operations, after the Boeing 747 and the McDonnell Douglas DC-10. The aircraft has a seating capacity of up to 400 passengers and a range of over 4,000 nautical miles (7,410 km). Its trijet configuration places one Rolls-Royce RB211 engine under each wing, with a third, center-mounted RB211 engine with an S-duct air inlet embedded in the tail and the upper fuselage. The aircraft has an autoland capability, an automated descent control system, and available lower deck galley and lounge facilities.
The L-1011 TriStar was produced in two fuselage lengths. The original L-1011-1 first flew in November 1970, and entered service with Eastern Air Lines in 1972. The shortened, long-range L-1011-500 first flew in 1978, and entered service with British Airways a year later. The original length TriStar was also produced as the high gross weight L-1011-100, uprated engine L-1011-200, and further upgraded L-1011-250. Post-production conversions for the L-1011-1 with increased takeoff weights included the L-1011-50 and L-1011-150.
In fluid dynamics, the Mach number (M or Ma) (/mɑːx/; German: [maχ]) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.
where
The local speed of sound, and thereby the Mach number, depends on the condition of the surrounding medium, in particular the temperature and pressure. The Mach number is primarily used to determine the approximation with which a flow can be treated as an incompressible flow. The medium can be a gas or a liquid. The boundary can be traveling in the medium, or it can be stationary while the medium flows along it, or they can both be moving, with different velocities: what matters is their relative velocity with respect to each other. The boundary can be the boundary of an object immersed in the medium, or of a channel such as a nozzle, diffusers or wind tunnels chaneling the medium. As the Mach number is defined as the ratio of two speeds, it is a dimensionless number. If M < 0.2–0.3 and the flow is quasi-steady and isothermal, compressibility effects will be small and a simplified incompressible flow equations can be used.
Lockheed (originally spelled Loughead) may refer to:
Nice news report filmed at Ames Research Center, Moffett field, Sunnyvale, CA. 1/5 scale models of both the Boeing 733, and Lockheed's L-2000. Also, great footage of the Boeing 707 prototype, "Dash 80" at NASA Langley! That special time when we were all waiting for the SSTs to arrive. From the Rick Prelinger Archives. Be sure to check my channel for the best in VINTAGE & RARE airliner videos! "The Boxart Den" World's largest display & collection of FULLY RESTORED rare & collectable model kit box art http://boxartden.com http://groups.yahoo.com/group/Box-Art
The United States' Supersonic Transport (SST) program was initiated by the Federal Aviation Administration (FAA) in 1963. The program aimed for a Mach 2+ aircraft capable of carrying 300 passengers with intercontinental range. The US aimed to outstrip the British Aerospace/Aerospatiale Concorde and Soviet Tu 144 programs through the use of advanced technology and materials. By the late 1960s contracts had been let to prime contractors Boeing (airframe) and General Electric (engines) but the program was four to five years behind the European and Soviet efforts, which had graduated to supersonic flight testing while the US program had yet to pass beyond the mockup stage. In 1971 the slow pace of technical development, environmental concerns, high costs, and questions over the commercial feas...
America’s forgotten concordes, the planes that never flew When we think of supersonic passenger air travel, most people will think of Concorde, the joint British & French design which operated from 1976 until 2003 and up until this day, has been the only long term supersonic passenger jet service to operate. What many people don’t know is that in the 60’s a 70’s there were three other competing designs from the United States and Russia. The Russian Tupolev Tu-144 was the first commercial supersonic transport aircraft (SST) which had its first flight 2 months before Concorde on 31st December 1969. However, after a crash at the Paris air show of 1973 and another in 1978 it was grounded after just 55 flights, though it remained in use as a research platform well in to the 1990’s. The other...
NASA film from the archives of Ron Grier. Great period piece from 1965, discussing the anticipated SSTs and how they will fit within the ATC system. Included are animations of the Boeing 733 & Lockheed L-2000, plus models of the B-733 and I think one of the Douglas or Convair designs. Be sure to check my channel for the best in VINTAGE & RARE airliner videos! https://www.facebook.com/ClassicAirli...
Read more @ http://wp.me/p3cRXG-fe6 NASA has begun the preliminary design of a “low boom” supersonic flight demonstration aircraft, as part of its renewed ‘X-planes’ program, under the 'New Aviation Horizons' initiative, introduced in the agency’s Fiscal Year 2017 budget. Under the contract a team led by Lockheed Martin Aeronautics Company of Palmdale, California, will complete a preliminary design for Quiet Supersonic Technology (QueSST). The Lockheed Martin team includes subcontractors GE Aviation of Cincinnati and Tri Models Inc. of Huntington Beach, California.
more at http://scitech.quickfound.net/ "This study used the free-flight model technique testing models of the NASA SCAT-15, Boeing 733, and Lockheed L2000. Tests were conducted in the NASA Langley Research Center's Full Scale Tunnel. http://crgis.ndc.nasa.gov/historic/643 " Silent. Public domain film from NASA, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Supersonic_transport A supersonic transport (SST) is a civilian supersonic aircraft designed to transport passengers at speeds greater than the speed of sound. To date, the only SSTs to see regular service have been Concorde and the Tupolev Tu-144. The last passenger flight for the Tu-144 w...
Lockheed company film from 1973 on the new L-1011, this one focusing on the British charter holiday airline, Court Line Aviation. Neat footage of the Palmdale plant, construction, test flying, great early '70s soundtrack, etc. Court Line Aviation was founded in 1957, and ceased operations in 1974. Be sure to check my channel for the best in VINTAGE & RARE airliner videos! https://www.facebook.com/ClassicAirli...
Air Transat Lockheed L-1011 Tristar arrives Birmingham following a flight from Toronto - circa. May 2000.
Filmed Sept. 5, 2000
America’s forgotten concordes, the planes that never flew When we think of supersonic passenger air travel, most people will think of Concorde, the joint British & French design which operated from 1976 until 2003 and up until this day, has been the only long term supersonic passenger jet service to operate. What many people don’t know is that in the 60’s a 70’s there were three other competing designs from the United States and Russia. The Russian Tupolev Tu-144 was the first commercial supersonic transport aircraft (SST) which had its first flight 2 months before Concorde on 31st December 1969. However, after a crash at the Paris air show of 1973 and another in 1978 it was grounded after just 55 flights, though it remained in use as a research platform well in to the 1990’s. The other...
this The Forgotten American Concordes Boeing 2707 Lockheed L 2000 SST.America’s forgotten concordes, the planes that never flew When we think of supersonic passenger air travel, most people will think of Concorde, the joint British & French design which operated from 1976 until 2003 and up until this day, has been the only long term supersonic passenger jet service to operate. What many people don’t know is that in the 60’s a 70’s there were three other competing designs from the United States and Russia. The Russian Tupolev Tu-144 was the first commercial supersonic transport aircraft (SST) which had its first flight 2 months before Concorde on 31st December 1969. However, after a crash at the Paris air show of 1973 and another in 1978 it was grounded after just 55 flights, though i...
Nice news report filmed at Ames Research Center, Moffett field, Sunnyvale, CA. 1/5 scale models of both the Boeing 733, and Lockheed's L-2000. Also, great footage of the Boeing 707 prototype, "Dash 80" at NASA Langley! That special time when we were all waiting for the SSTs to arrive. From the Rick Prelinger Archives. Be sure to check my channel for the best in VINTAGE & RARE airliner videos! "The Boxart Den" World's largest display & collection of FULLY RESTORED rare & collectable model kit box art http://boxartden.com http://groups.yahoo.com/group/Box-Art
NASA film from the archives of Ron Grier. Great period piece from 1965, discussing the anticipated SSTs and how they will fit within the ATC system. Included are animations of the Boeing 733 & Lockheed L-2000, plus models of the B-733 and I think one of the Douglas or Convair designs. Be sure to check my channel for the best in VINTAGE & RARE airliner videos! https://www.facebook.com/ClassicAirli...
hen we consider supersonic traveler air travel, the vast majority will consider Concorde, the joint British and French outline which worked from 1976 until 2003 and up until this day, has been the main long haul supersonic traveler plane administration to work. What numerous individuals don't know is that in the 60's a 70's there were three other contending outlines from the United States and Russia. The Russian Tupolev Tu-144 was the principal business supersonic transport flying machine (SST) which had its first flight 2 months before Concorde on 31st December 1969. Be that as it may, after an accident at the Paris flying demonstration of 1973 and another in 1978 it was grounded after only 55 flights, however it stayed being used as an examination stage well into the 1990's. The ...
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http://thefilmarchive.org/ A supersonic transport (SST) is a civilian supersonic aircraft designed to transport passengers at speeds greater than the speed of sound. The only SSTs to see regular service to date have been Concorde and the Tupolev Tu-144. The last passenger flight of the Tu-144 was in June 1978 with its last ever flight in 1999 (as utilized by NASA). Concorde's last commercial flight was in October 2003, with a November 26, 2003 ferry flight being the last ever airborne operation for the model. Following the permanent cessation of flying by Concorde, there are no SSTs in commercial service. Supersonic airliners' greater speed and efficiency over their conventional counterparts have made them objects of numerous recent and ongoing design studies. Drawbacks and design ch...