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The service ceiling is the maximum altitude of an aircraft during normal operations. Specifically, it is the density altitude at which flying in a clean configuration , at the best rate of climb airspeed for that altitude and with all engines operating and producing maximum continuous power, will produce a given rate of climb.
March 6 – The last flight of the SR-71 Blackbird takes place, when Lieutenant Colonels Ed Yielding (pilot) and Joseph Vida (reconnaissance systems officer) fly U.S. Air Force SR-71A serial number 61-17972 from Palmdale, California, to Washington Dulles International Airport in Virginia, setting a Los Angeles, California-to-Washington, D.C. world record time of 1 hour 4 minutes 20 seconds at ...
In aviation, ceiling is a measurement of the height of the base of the lowest clouds (not to be confused with cloud base which has a specific definition) that cover more than half of the sky (more than 4 oktas) relative to the ground.
Coffin corner (also known as the aerodynamic ceiling [1] or Q corner) is the region of flight where a fast but subsonic fixed-wing aircraft's stall speed is near the critical Mach number, at a given gross weight and G-force loading. In this region of flight, it is very difficult to keep an airplane in stable flight.
This is a timeline of aviation history, and a list of more detailed aviation timelines. The texts in the diagram are clickable links to articles. The texts in the diagram are clickable links to articles.
The history of aviation spans over two millennia, from the earliest innovations like kites and attempts at tower jumping to supersonic and hypersonic flight in powered, heavier-than-air jet aircraft. Kite flying in China, dating back several hundred years BC, is considered the earliest example of man-made flight. [ 1 ]
The World's Work: A History of Our Time. Vol. XIII. pp. 8163– 8178 Includes photos of many c. 1906 special purpose automobiles. "New England in Motor History; 1890 to 1916". The Automobile Journal. 41: 9. 25 February 1916. Norman, Henry (April 1902). "The Coming of the Automobile". The World's Work: A History of Our Time. Vol.
The 707 and 747 formed the backbone of many major airline fleets through the end of the 1970s, including United (747 shown) and Pan Am (707 shown) Lufthansa Boeing 727 A Boeing 737, the best-selling commercial jet aircraft in aviation history. Vertol Aircraft Corporation was acquired by Boeing in 1960, [23] and was reorganized as Boeing's ...