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kilogram per cubic meter (kg/m 3) diameter: meter (m) distance: meter (m) direction: unitless impact parameter meter (m) differential (e.g. ) varied depending on context differential vector element of surface area A, with infinitesimally small magnitude and direction normal to surface S
A branch of physics that studies atoms as isolated systems of electrons and an atomic nucleus. Compare nuclear physics. atomic structure atomic weight (A) The sum total of protons (or electrons) and neutrons within an atom. audio frequency A periodic vibration whose frequency is in the band audible to the average human, the human hearing range.
The US Code of Federal Regulations defines an accident as "an occurrence associated with the operation of an aircraft, which takes place between the time any person boards the aircraft with the intention of flight and all such persons have disembarked, and in which any person suffers death or serious injury, or in which the aircraft receives substantial damage;" an incident as "an occurrence ...
1946 United States Air Force C-47 Crash at Yan'an; 1950 Myrtle Beach USAF C-46D crash; 1952 Habomai Islands RB-29 shootdown incident; 1968 Kadena Air Base B-52 crash; 1969 theft of C-130; 2020 United States Air Force E-11A crash
This is a list of initials, acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Air Force.Many of the words or phrases have varying levels of acceptance among different units or communities, and some also have varying levels of appropriateness (usually dependent on how senior the user is in rank).
In physics, a collision is any event in which two or more bodies exert forces on each other in a relatively short time. Although the most common use of the word collision refers to incidents in which two or more objects collide with great force, the scientific use of the term implies nothing about the magnitude of the force. [1]
An Iranian Air Force ultralight training plane crash causing the death of both pilots in Arak airport. [78] 17 May Two United States Navy McDonnell Douglas T-45 Goshawk collided mid-air in Ricardo, Texas. One T-45 managed to land safely at Naval Air Station Kingsville while the crew of the other T-45 had to eject. [79] 21 May
The aircraft destroyed, with Finnish Air Force serial number DO-10, was originally a Douglas C-47A-1-DK transport aircraft, USAAF serial number 42-92268. Built by the Douglas Aircraft Corporation in Oklahoma City in 1943, it initially served in the CBI theatre in World War II, and was transferred to the RAF in January 1944 with serial number FL626.