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The system was mounted entirely in a single bullet-shaped housing that was suspended within the Lightning's circular nose air intake. [ 50 ] The AI.23 was the world's first operational aircraft interception monopulse radar system. [ 51 ]
Brett Porter, [5] a wildlife ranger, reported taking a photo in Queensland, Australia in 1987. Bead lightning, also known by the terms pearl lightning, chain lightning, perlschnurblitz, éclair en chapelet and others, [6] is the decaying stage of a lightning channel in which the luminosity of the channel breaks up into segments. [7]
In addition to altering the tail, stealth design must bury the engines within the wing or fuselage, or in some cases where stealth is applied to an extant aircraft, install baffles in the air intakes, so that the compressor blades are not visible to radar. A stealthy shape must be devoid of complex bumps or protrusions of any kind, meaning that ...
The first scientific description of the crown flash phenomenon appears to be in the journal Monthly Weather Review in 1885, [4] according to the Guinness Book of Records. [5] Also mentioned in Nature in 1971 [ 6 ] and in a letter to Nature slightly earlier in the same year, [ 7 ] this phenomenon is regarded as uncommon and not well documented.
The General Dynamics GAU-12/U Equalizer is a five-barrel 25 mm Gatling-type rotary cannon. The GAU-12/U is used by the United States, Italy and Spain, which mount the weapon in their attack jets such as the AV-8B Harrier II , airborne gunships such as the Lockheed AC-130 , and land-based fighting vehicles.
A subsequent study from Stanford University in 1996 linked a TGF to an individual lightning strike occurring within a few milliseconds of the TGF. BATSE detected only a small number of TGF events in nine years (76), due to it having been constructed to study gamma ray bursts from outer space, which last much longer.
The British Westland Whirlwind (four 20 mm cannon) and the American Lockheed P-38 Lightning (one 20 mm cannon and four .50 cal), both twin-engined fighters, carried the entirety of their gun armament in the nose, a configuration which concentrated the firepower at a broader range of distances, and did not require left–right harmonisation. [4]
IEC 61000-4-5 is an international standard by the International Electrotechnical Commission on surge immunity. In an electrical installation, disruptive surges can appear on power and data lines. Their sources include abrupt load switching and faults in the power system, as well as induced lightning transients from an indirect lightning strike ...