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The thrust-to-weight ratio and lift-to-drag ratio are the two most important parameters in determining the performance of an aircraft. The thrust-to-weight ratio varies continually during a flight. Thrust varies with throttle setting, airspeed, altitude, air temperature, etc. Weight varies with fuel burn and payload changes.
The Tumansky R-29 is a Soviet turbojet aircraft engine that was developed in the early 1970s. [1] It is generally described as being in the "third generation" of Soviet gas turbine engines which are characterized by high thrust-to-weight ratios and the use of turbine air cooling.
The engine was produced in 1970 through 1987 and was used on the Tu-134FA, Tu-134B, and Tu-134AK aircraft. [1] In 1980, the D-30 engine series III, a further improvement, was created with the maximum thrust of 6930 kgf (with preserving it at up to до = +C) [clarify]. The number of the engine compressor stages was increased to 5, the gas ...
The engine used a special high-temperature JP-6 fuel. The six YJ93 engines in the XB-70 Valkyrie were capable of producing a thrust to weight ratio of 5:1 allowing for a speed of 2,000 mph (3,200 km/h) (approximately Mach 3) at an altitude of 70,000 feet (21,000 m). [4]
Maximum thrust: 4,550 lbf (20.24 kN) Bypass ratio: 2.0:1; Air mass flow: 84 lb (38 kg)/s through the fan; Specific fuel consumption: 0.67 lb/lbf·hr (68.3·kg/kN·h) at maximum cruising speed; Thrust-to-weight ratio: 6.6
The J60 conception and project design began in July 1957 at United Aircraft of ... delivered a maximum thrust of 17.91 kN (4,025 lb st). ... Thrust-to-weight ratio: 7.05;
The fuel consumption per mile or per kilometre is a more appropriate comparison for aircraft that travel at very different speeds. [citation needed] There also exists power-specific fuel consumption, which equals the thrust-specific fuel consumption divided by speed. It can have units of pounds per hour per horsepower.
LAN Airlines confirmed an order for 15 Airbus A318 aircraft, for a total of 34 engines (30 installed and 4 spares) powered by PW-6000 engines on 15 August 2005. In addition, LAN signed with Pratt and Whitney to power up to 25 option aircraft. If LAN exercises all options it would mean an additional 56 (50 installed and six spare) engines.