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The TR-201 or TR201 is a hypergolic pressure-fed rocket engine used to propel the upper stage of the Delta rocket, referred to as Delta-P, from 1972 to 1988. The rocket engine uses Aerozine 50 as fuel, and N 2 O 4 as oxidizer. It was developed in the early 1970s by TRW as a derivative of the lunar module descent engine (LMDE).
The engine has crosshead bearings so the always-vertical piston rods create a tight seal under the pistons. Consequently, the lubrication of the engine is split: the cylinders and the crankcase use different lubricants, each being specialised for its designated role. The cylinders are lubricated by continuous timed injection of consumable ...
TRW Automotive was an American company based in Livonia, Michigan.Tracing its roots from TRW Inc., [2] [3] TRW Automotive's production featured a variety of automotive products including integrated vehicle control and driver assist systems, braking systems, steering systems, suspension systems, seat belts and airbags, and engine valves among others. [4]
Several components had design changes, longer rods (152 mm (6.0 in) c-c, 7 mm (0.28 in) longer), pistons with a lower compression height, lower friction bearings (smaller in size), a crankshaft with 8 counterweights (instead of 4 on the older Bxx engines) and a heavy harmonic balancer (aka damper) in the crank pulley.
The propulsion system for the descent stage of the lunar module was designed to transfer the vehicle, containing two crewmen, from a 60-nautical-mile (110 km) circular lunar parking orbit to an elliptical descent orbit with a pericynthion of 50,000 feet (15,000 m), then provide a powered descent to the lunar surface, with hover time above the lunar surface to select the exact landing site.
The Pratt & Whitney R-4360 Wasp Major is an American 28-cylinder four-row radial piston aircraft engine designed and built during World War II.At 4,362.5 cu in (71.5 L), it is the largest-displacement aviation piston engine to be mass-produced in the United States, and at 4,300 hp (3,200 kW) the most powerful.
The TR-106 or low-cost pintle engine (LCPE) was a developmental rocket engine designed by TRW under the Space Launch Initiative to reduce the cost of launch services and space flight. Operating on LOX / LH2 the engine had a thrust of 2892 kN, or 650,000 pounds, making it one of the most powerful engines ever constructed.
The production run of 173,618 R-1830 examples [1] makes it the most-produced aviation engine in history. A further developed version, the R-2000 , was produced starting in 1942. The R-2000 was "bored-out" to 5.75 in (146 mm) and had a number of other minor changes to improve fuel economy and allow it to run at higher power ratings on lower ...