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Topic Review
Biography
Topic Review
Descent Propulsion System
The Descent Propulsion System (DPS) or Lunar Module Descent Engine (LMDE) is a variable-throttle hypergolic rocket engine developed by Space Technology Laboratories (TRW) for use in the Apollo Lunar Module Descent Stage. It used Aerozine 50 fuel and dinitrogen tetroxide (N2O4) oxidizer. This engine used a pintle injector, a design also used later in the SpaceX Merlin engine.
703
18 Nov 2022
Topic Review
China Lake Grenade Launcher
The China Lake Model (or China Lake pump-action grenade launcher) is a pump-action grenade launcher that was developed by the Special Projects Division of the Naval Air Weapons Station (NAWS), which provided equipment to United States Navy SEALs.
3.5K
18 Nov 2022
Topic Review
Animated Cartoon
An animated cartoon is a film for the cinema, television or computer screen, which is made using sequential drawings, as opposed to animation in general, which include films made using clay, puppets, 3D modeling and other means. Animated cartoons are still created for entertainment, commercial, educational and personal purposes.
914
18 Nov 2022
Topic Review
Insulated Cross-Arm Technology
High-voltage transmission technology has advanced quickly with the overall development and increased use of renewable energy. More demands on the insulating system are made when high-voltage power systems evolve. One of the significant factors is the sharp rise in population density, which led to the high demand for electricity. Right-of-way infringement is a problem that frequently occurs these days. Transmission is done over a rated capacity; as a result, the transmission line heats up, the insulation ages, and the electric field becomes distorted. The insulating system is prone to fail too soon when the operating voltage inverses or when there is a significant temperature differential.
2.8K
18 Nov 2022
Topic Review
Jaguar 420 and Daimler Sovereign (1966–69)
The Jaguar 420 (pronounced "four-twenty") and its Daimler Sovereign equivalent were introduced at the October 1966 London Motor Show and produced for two years as the ultimate expression of a series of "compact sporting saloons" offered by Jaguar throughout that decade, all of which shared the same wheelbase. Developed from the Jaguar S-Type, the 420 cost around £200 more than that model and effectively ended buyer interest in it, although the S-Type continued to be sold alongside the 420/Sovereign until both were supplanted by the Jaguar XJ6 late in 1968.
966
18 Nov 2022
Biography
Edward Magruder Tutwiler
Edward Magruder Tutwiler (October 13, 1846 – April 19, 1925) was an American industrialist and civil engineer who was a leading businessman in Birmingham, Alabama.[1] Tutwiler was born on October 13, 1846 in Palmyra, Virginia to Thomas H. Tutwiler and Harriet (Strange) Tutwiler.[2][3] His father was a lawyer and served as commonwealth attorney and as a member of the Virginia Legislature for
487
18 Nov 2022
Biography
Franklin Chang Díaz
Franklin Ramón Chang Díaz (April 5, 1950)[1] is a Costa Rican Chinese American mechanical engineer, physicist, former NASA astronaut. He is the founder and current CEO of Ad Astra Rocket Company[2] as well as a member of Cummins' board of directors.[3] He became an American citizen in 1977.[4] He is of Chinese (paternal side) and Costa Rican Spanish (maternal side) descent.[5] He is a veteran
873
18 Nov 2022
Biography
Albert Kingsbury
Albert Kingsbury (23 December 1863 – 28 July 1943) was an United States engineer, inventor and entrepreneur. He was responsible for over fifty patents obtained between the years 1902 to 1930.[1] Kingsbury is most famous for his hydrodynamic thrust bearing which uses a thin film of oil to support weights of up to 220 tons. This bearing extended the service life of many types of machinery during
495
18 Nov 2022
Biography
K. Eric Drexler
Kim Eric Drexler (born April 25, 1955) is an American engineer best known for popularizing the potential of molecular nanotechnology (MNT), from the 1970s and 1980s. His 1991 doctoral thesis at Massachusetts Institute of Technology was revised and published as the book Nanosystems: Molecular Machinery Manufacturing and Computation (1992), which received the Association of American Publishers awa
3.8K
18 Nov 2022
Topic Review
Multi-Material 3D Printing of Functional Ceramic Devices
As an emerging technology, multi-material 3D printing offers increased complexity and greater freedom in the design of functional ceramic devices because of its unique ability to directly construct arbitrary 3D parts that incorporate multiple material constituents without an intricate process or expensive tools.
965
17 Nov 2022
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