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When either type of system is activated, a 15-minute countdown starts, after which the lights turn off. While the lights are on, whenever a lighting command is issued, whether it changes the lighting intensity or not, the fifteen-minute countdown is reset. At some airfields, the lights may flash once to warn pilots that the lights are about to ...
However, the aircraft did possess a desirable capability, as proved when several Crusader pilots took off with the wings folded and were able to land the aircraft. One of these episodes took place on 23 August 1960; a Crusader with the wings folded took off from Napoli Capodichino in full afterburner, climbed to 5,000 ft (1,500 m) and then ...
Diagram of decreasing apertures with conversely increasing f-numbers, in one-stop increments; each aperture has half the light-gathering area of the previous one. It is akin, says the photographer Douglas Peebles , in its simplicity and obviousness to the advice "if you want to be famous for photographing famous people, begin by photographing ...
When on, keys F1 to F12 behave as applicable, with meanings defined by the application being used at the time. When off, new behaviour is used: F5 means "open", F10 means "spell" etc. In early models, the state reverted to off at each reboot or keyboard reset, but later models retained F-Lock state across reboots.
Landing lights are typically only useful as visibility aids to the pilots when the aircraft is very low and close to terrain, as during take-off and landing. Landing lights are usually extinguished in cruise flight, especially if atmospheric conditions are likely to make the lights reflect or glare back into the eyes of the pilots.
External lights such as street lights were switched off, or dimmed and shielded to deflect light downward. Essential lights such as traffic lights and vehicle headlights were fitted with slotted covers to deflect their beams downwards to the ground. [8] Shops and factories had particular problems.
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The LTV A-7 Corsair II is an American carrier-capable subsonic light attack aircraft designed and manufactured by Ling-Temco-Vought (LTV).. The A-7 was developed during the early 1960s as replacement for the Douglas A-4 Skyhawk.