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The first German jet engines built during the Second World War used a mechanical APU starting system designed by the German engineer Norbert Riedel.It consisted of a 10 horsepower (7.5 kW) two-stroke flat engine, which for the Junkers Jumo 004 design was hidden in the engine nose cone, essentially functioning as a pioneering example of an auxiliary power unit for starting a jet engine.
Honeywell auxiliary power units are a series of gas turbine auxiliary power units (APU) made by Honeywell Aerospace. Honeywell started manufacturing APUs in the early 1950s and since then they can be found on many aircraft. [1] Over the years Honeywell have produced more than 95,000 APUs and more than 36,000 are still in service. [2]
Thermo King is an American manufacturer of transport temperature control systems for refrigerator trucks and trailers, refrigerated containers and refrigerated ...
The Honeywell 131-9 APU was used in an emergency landing when U.S. Airways Flight 1549 splash landed in New York City’s Hudson River on January 15, 2009, called the Miracle on the Hudson. Both CFM56 turbofans were damaged and electrical generators went off line.
The typical efficiency of TEGs is around 5–8%, although it can be higher. Older devices used bimetallic junctions and were bulky. More recent devices use highly doped semiconductors made from bismuth telluride (Bi 2 Te 3), lead telluride (PbTe), [10] calcium manganese oxide (Ca 2 Mn 3 O 8), [11] [12] or combinations thereof, [13] depending on application temperature.
In addition to 3,000-shp output, the targets for AATE were a 25% reduction in fuel consumption (less than 0.347 lb/(hp⋅h), 211 g/kWh), a 65% improvement in power to weight (more than 6.5 hp/lb, 10.7 kW/kg), a 20% improvement in design life (more than 6000 hours and 15000 cycles), a 35% reduction in production (less than $650k per engine) and maintenance cost, and a 15% reduction in product ...
U.S. patent 2,475,842 was issued on July 12, 1949 – Starter generator. U.S. patent 2,475,843 was issued on July 12, 1949 – Means operated by a starter generator for cooling a gas engine. U.S. patent 2,477,377 was issued on July 26, 1949 – Means for thermostatically operating gas engines.
1961 – acquires Thermo King (sold in 1997 to Ingersoll Rand) 1964 – begins Skybus project; beginning of automated mass transit; 1965 – invention of the first MEMS device, buys Marketeer Electronic Vehicles [40] 1966 – founds Cinema Center Films [40] 1966 – starts housing and real estate development divisions [40] 1966 – buys a toy ...
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