Quizzes & Puzzles1 min ago
Aeroplane lights
39 Answers
The other night, whilst out looking at the moon, I say loads of planes flying over with their lights flashing.
Is it true that every plane has a distinctive 'flashing lights' pattern or have I dreamt that?
Is it true that every plane has a distinctive 'flashing lights' pattern or have I dreamt that?
Answers
Aircraft navigation lights are placed in a way similar to that of marine vessels, with a red navigation light located on the left wingtip leading edge and a green light on the right wingtip leading edge. A white navigation light is as far aft as possible on the tail or each wing tip.[3] High-
09:42 Sun 02nd Sep 2012
From DT's post on the good morning thread
DTcrosswordfan
well here we are: "Chitinase triggers the allergic reaction which in turn releases the serotonin and histamine" - symptoms include cramps, vomiting, diaorrhea, headaches and also in rare cases, anaphylactic shocks.
Chitinases are hydrolytic enzymes that break down glycosidic bonds in chitin. Chitin (C8H13O5N)n is a long-chain polymer of a N-acetylglucosamine, a derivative of glucose. Chitinases are quite widely available in things like fungi, shellfish etc - funny I have no reaction to those, it's probably a very specific one....... you learn something everyday, as they say.
OK, it's not chin-thingies, sorry :-)
DTcrosswordfan
well here we are: "Chitinase triggers the allergic reaction which in turn releases the serotonin and histamine" - symptoms include cramps, vomiting, diaorrhea, headaches and also in rare cases, anaphylactic shocks.
Chitinases are hydrolytic enzymes that break down glycosidic bonds in chitin. Chitin (C8H13O5N)n is a long-chain polymer of a N-acetylglucosamine, a derivative of glucose. Chitinases are quite widely available in things like fungi, shellfish etc - funny I have no reaction to those, it's probably a very specific one....... you learn something everyday, as they say.
OK, it's not chin-thingies, sorry :-)
Aircraft navigation lights are placed in a way similar to that of marine vessels, with a red navigation light located on the left wingtip leading edge and a green light on the right wingtip leading edge. A white navigation light is as far aft as possible on the tail or each wing tip.[3] High-intensity strobe lights are located on the aircraft to aid in collision avoidance.[4]
Navigation lights in civil aviation are required to be turned on from sunset to sunrise. High-intensity white strobe lights are part of the anti-collision light system, as well as the aviation red or white rotating beacon. The anti collision light system (either strobe lights or rotating beacon) is required for all airplanes built after March 11, 1996 for all flight activities in poor visibility, and recommended in good visibility, where only strobes and beacon are required. An example of this would be just before push back, (push and start) the beacon lights are required, to notify ground crews that the engines are about to be started. These beacon lights will stay on for the duration of the flight. While taxiing, the taxi lights are activated. When coming onto the runway, the taxi lights are deactivated and the landing lights and strobes are activated. When passing 10000 feet (or FL100), the landing lights are no longer required, and can be turned off at the pilot's discretion. The same cycle works when landing, but in reverse order. There are also other non-navigational lights on civilian commercial airliners. These include logo lights, which illuminate the company logo on the tail fin. These lights are optional to turn on, though most pilots switch them on at night to increase visibility from other aircraft. Modern airliners also have a wing light. These are positioned on the outer side just in front of the engine cowlings on the fuselage. These are not required to be on, but in some cases pilots turn these lights on for engine checks and also while passengers board the aircraft for better visibility of the ground near the aircraft.
Navigation lights in civil aviation are required to be turned on from sunset to sunrise. High-intensity white strobe lights are part of the anti-collision light system, as well as the aviation red or white rotating beacon. The anti collision light system (either strobe lights or rotating beacon) is required for all airplanes built after March 11, 1996 for all flight activities in poor visibility, and recommended in good visibility, where only strobes and beacon are required. An example of this would be just before push back, (push and start) the beacon lights are required, to notify ground crews that the engines are about to be started. These beacon lights will stay on for the duration of the flight. While taxiing, the taxi lights are activated. When coming onto the runway, the taxi lights are deactivated and the landing lights and strobes are activated. When passing 10000 feet (or FL100), the landing lights are no longer required, and can be turned off at the pilot's discretion. The same cycle works when landing, but in reverse order. There are also other non-navigational lights on civilian commercial airliners. These include logo lights, which illuminate the company logo on the tail fin. These lights are optional to turn on, though most pilots switch them on at night to increase visibility from other aircraft. Modern airliners also have a wing light. These are positioned on the outer side just in front of the engine cowlings on the fuselage. These are not required to be on, but in some cases pilots turn these lights on for engine checks and also while passengers board the aircraft for better visibility of the ground near the aircraft.
Pedants corner. 'Port' and 'starboard' are used in aviation. Indeed, the aircraft lights were chosen to be red and green to be the lights for port and starboard. The terms are used less than formerly because of possible language difficulties; in an emergency, passengers told to leave the aircraft by the starboard door or wing would be confused, and air traffic control internationally uses English words which are easily understood, which 'left' and 'right' are. Restorers of old aircraft, old aircraft enthusiasts, and teachers of flying (and their surviving pupils), always used, or use, the nautical terms
And you young people don't know the difference, any more than you understand 'near side' and 'off side' of a car, so there!
And you young people don't know the difference, any more than you understand 'near side' and 'off side' of a car, so there!
Last time I took my car in for one new tyre (following a puncture) I gave them the wheel that was off the car and said it needs to be put on the near side front when the tyre is replaced. The next thing I know is the guy is jacking up the off side front to put the wheel on there!
It was made even worse because the near side front had the space saver on it!
It was made even worse because the near side front had the space saver on it!
Fred - the red and green are used but the terms Port and Starboard aren`t. It`s left and right. At least it is in this country.
I like the bit from kjs2`s Wiki - "The landing lights are no longer required and can be turned off at the pilot`s discretion". Better not flash them on and off when you fly over house then (as my friend`s husband used to do)
I like the bit from kjs2`s Wiki - "The landing lights are no longer required and can be turned off at the pilot`s discretion". Better not flash them on and off when you fly over house then (as my friend`s husband used to do)
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