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No. If your plane has counterrotating propellers, and the props turn toward the fuselage, the plane doesn't have a critical engine. If the plane has counterrotating props that turn away from the fuselage, or both props turn the same way, the plane has one. There's another "critical engine" situation that comes into play even if you've got counterrotating props: if a critical function (cabin pressurization comes to mind) is handled by only one engine, the engine that drives it is critical...then again, it's not that expensive to put a cabin pressure pump on both engines, so that's not real common. One that will make you go hmm...the Diamond DA-42, which drives its props through a gearbox, has a critical engine. They couldn't have put a selectable reverse gear in it? Simply put, the Critical Engine is defined as the engine whose failure would most adversely affect the performance or handling qualities of an aircraft. If, as pointed out above, neither engine would have a greater impact on handling, then neither would be considered the critical engine.
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Which of 737 747 757 767 and 777 is NOT a twin-engine jet?
All of those Boeing aircraft are twin jet except the 747 which has 4.
What do most Cessna 406 look like?
All Cessna 406 are low wing, twin engine executive aircraft. -The "Cessna 406 Bushplane" in the book "Hatchet" is entirelya figment of the author's fertile imagination. The There is in fact NO such aircraft.
What happens if one of the engines of a twin engine jet fails?
The plane will 'hang' to oneedge and in about 1 minute will hit the ground. Not right at all. Every commercial twin-jet aircraft is able to fly safely on one engine, and pilots are trained on how to land safely on a single engine. It very rarely happens but when it does it's not a big deal.
What is main engine?
The propulsion engine on a ship or aircraft is the MAIN engine. -Many aircraft and almost all ships have smaller engines just to produce electrical and hydraulic power.
Why twin spool aircraft engine was made?
The large engine manufacturer, Pratt and Whitney, could see that it was losing market share in the 1940,s following the second World War. Luke Hobbs, Pratt's for-most engine designer, could see that the company needed something new and leading edge to continue to be an industry leader in aircraft engines. Hobbs decided on a twin spool design LP, low pressure compressor and a HP, high pressure compressor, where each compressor can run at its most efficient speed because each compressor had its own driving shaft and turbine to power it. The trade-off is a twin spool engine weighs more and has additional mechanical complexity, something aircraft designers usually try to avoid. In this case the twin spool compressor has so many advantages that it is used in almost all modern transport aircraft despite these drawbacks. The British engine manufacturer, Rolls Royce has taken the idea even further with its very competitive line of three spool engines. They are known as Roll Royce Trent's.
An airplane's usual speed?
Small single-engined airplanes seldom exceed 140 mph, with more complex single- and twin- engine piston aircraft reaching 200 - 250 mph. Turboprop aircraft generally cruise in the 300 - 350 mph range, while nearly all jets (except military aircraft) cruise between 450 and 600 mph.
Aircraft reciprocating engine indentification?
All certified airworthy aircraft engines have data plates attached that gives all the identifying info. If the plate is missing, the engine is not legally airworthy no matter what the actual condition.
After how many minutes can a flight take off before the flight which has taken off?
Immediately but there is a danger of getting into "bad air". The separation is not controlled in 'minutes' but in distance between the two aircraft. Here are the rules from pilot training:* Category Ilight-weight single-engine propeller driven aircraft * Category IIlight-weight twin-engine aircraft weighing 12,500 pounds or less * Category IIIeverything else including high performance single-engine propeller air-planes, large multi-engine propeller aircraft and all turbine powered aircraft The FAA separation regulations also specify that departing aircraft may not take off from a runway unless: * A landing aircraft has taxied clear of the runway, or * A departing aircraft is airborne and is clear of the departure end of the runway or * A departing aircraft has turned away from the departing runway But the regulations also say that the following aircraft can depart: * If the take-off separation is 3,000 feet and both aircraft are Category I * If a Category II aircraft departs before a Category I aircraft * If a Category II aircraft takes off after a Category I aircraft * If both aircraft are Category II aircraft and the separation distance is 4,500 feet * If either aircraft is a Category III aircraft and the separation distance is 6,000 feet from a virtualskies.arc.nasa.gov tutorial (see link)
What is balanced field takeoff?
A "balanced field" with respect to aircraft takeoff performance refers to the minimum length of runway that will allow for an aircraft to accelerate to V-1 (decision speed), experience failure of the critical engine, and then either stop in the remaining runway or continue to a successful takeoff meeting all applicable takeoff performance criteria.
What is the maximum speed limit on a runway?
There is no speed limit, aircraft have differant take-off speeds called V1 - is the critical engine failure recognition speed or takeoff decision speed. It is the decision speed nominated by the pilot which satisfies all safety rules, and above which the takeoff will continue even if an engine fails. The speed will vary between aircraft types and also due to aircraft weight, runway length, wing flap setting, engine thrust used, runway surface contamination and other factors V 2 - Takeoff safety speed. The speed at which the aircraft may safely become airborne with one engine inoperative. -Wikipedia
Were the first aircraft engines liquid cooled or air cooled?
Almost all of the first aircraft engines were air cooled as this made for a lighter engine.
How big is the Cessna 406 bush plane?
If you are looking at the picture of a white twin engine aircraft with a red emblem on the tail this is a Cessna 406. Does it look like a "bushplane ? -NO. There is no such thing as a "Cessna 406 bushplane."-The guy who wrote "hatchet " got his fact all wrong.
