This time we are looking on the crossword puzzle clue for: Lustrous black.
it’s A 14 letters crossword definition.
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Last seen on: –Eugene Sheffer – King Feature Syndicate Crossword – Nov 25 2022
–Eugene Sheffer – King Feature Syndicate Crossword – Mar 18 2022
–The Sun – Two Speed Crossword – Jan 30 2021
–Eugene Sheffer – King Feature Syndicate Crossword – Oct 26 2020
–Eugene Sheffer – King Feature Syndicate Crossword – Apr 3 2020
Eugene Sheffer – King Feature Syndicate Crossword – Mar 11 2020
Random information on the term “JET”:
A jet aircraft (or simply jet) is an aircraft (nearly always a fixed-wing aircraft) propelled by jet engines.
Whereas the engines in propeller-powered aircraft generally achieve their maximum efficiency at much lower speeds and altitudes, jet engines and aircraft achieve maximum efficiency at speeds close to or even well above the speed of sound. Jet aircraft generally cruise at faster than about Mach 0.8 (609 mph, 981 km/h or 273 m/s) at altitudes around 10,000–15,000 metres (33,000–49,000 ft) or more.
Frank Whittle, an English inventor and RAF officer, developed the concept of the jet engine in 1928, and Hans von Ohain in Germany developed the concept independently in the early 1930s. He wrote in February 1936 to Ernst Heinkel, who led the construction of the world’s first turbojet aircraft and jet plane Heinkel He 178.
After the first instance of powered flight, a large number of jet engine factories were suggested. René Lorin, Morize, Harris proposed systems for creating a jet efflux. In 1910 the Romanian inventor Henri Coandă filed a patent on a jet propulsion system which used piston-engine exhaust gases to add heat to an otherwise pure air stream compressed by rotating fan blades in a duct. It was installed in his Coandă-1910 but this craft probably never flew.