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The critical engine of a multi-engine fixed-wing aircraft is the engine that, in the event of failure, would most adversely affect the performance or handling abilities of an aircraft. On propeller aircraft, there is a difference in the remaining yawing moments after failure of the left or the right (outboard) engine when all propellers rotate ...
The critical speed. This was defined as the speed at which the unbalanced reciprocating parts reversed the pull of the locomotive. At higher speeds this motion was damped by throttling oil flow in dashpots. The critical speed varied from 95 RPM for a Baldwin tandem compound to over 310 RPM for a Cole compound Atlantic.
On turbojet and turbofan aircraft, the outboard engines are usually equally critical. Three-engine aircraft such as the MD-11 and BN-2 Trislander do not have a V MCA2; a failed centerline engine has no effect on V MC. When two opposing engines of aircraft with four or more engines are inoperative, there is no thrust asymmetry, hence there is no ...
Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft.
Yanmar of Japan produced small, charge-cooled rotary engines for chainsaws and outboard engines. [204] One of its products is the LDR (rotor recess in the leading edge of the combustion chamber) engine, which has better exhaust emissions profiles, and reed-valve controlled intake ports, which improve part-load and low rpm performance. [205]
Engine Control Unit (=EEC) EDR engineering data record EDTO extended diversion time operations: EEC electronic engine control EET estimated elapsed time EFB electronic flight bag: EFC 1: Engine Flight Cycle EFC 2: expect further clearance EFD Electronic flight display EFFRA engine failure flap retraction altitude EFIS electronic flight ...