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  2. Critical engine - Wikipedia

    en.wikipedia.org/wiki/Critical_engine

    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 ...

  3. Comparison of orbital rocket engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_orbital...

    Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [e] Oxidiser: fuel ratio Aeon 1 USA: Relativity Space: Terran 1: Retired 1st CH 4 / LOX: Gas generator: 310: 86,740 (SL) [64] Aeon 1 Vacuum USA: Relativity Space: Terran 1: Retired 2nd CH ...

  4. Aero Commander 500 family - Wikipedia

    en.wikipedia.org/wiki/Aero_Commander_500_family

    The turboprop twin-Commanders—with much more powerful engines (and most with longer bodies, allowing greater rudder leverage, critical for single-engine control [14] [20]) – came out on the opposite end of the rankings, with one of the lowest rates of engine-failure accidents of all "light" twins examined, at only 0.4 per hundred-thousand ...

  5. Lycoming O-320 - Wikipedia

    en.wikipedia.org/wiki/Lycoming_O-320

    The LIO-320 is a "left-handed" version with the crankshaft rotating in the opposite direction for use on twin-engined aircraft to eliminate the critical engine. [2] [3] The first O-320 (with no suffix) was FAA certified on 28 July 1953 to CAR 13 effective 5 March 1952; this same engine was later re-designated, without change, as the O-320-A1A. [2]

  6. Allison V-1710 - Wikipedia

    en.wikipedia.org/wiki/Allison_V-1710

    The Allison V-1710 aircraft engine designed and produced by the Allison Engine Company was the only US-developed V-12 liquid-cooled engine to see service during World War II. Versions with a turbocharger gave excellent performance at high altitude in the twin-engined Lockheed P-38 Lightning , and turbo-superchargers were fitted to experimental ...

  7. Engine configuration - Wikipedia

    en.wikipedia.org/wiki/Engine_configuration

    1919 Napier Lion II aircraft engine with three cylinder banks. Any design of motor/engine,be it a V or a boxer can be called an "in-line" if it's mounted in-line with the frame/chassis and in-line with the direction of travel of the vehicle.When the motor/engine is across the frame/chassis this is called a TRANSVERSE motor.Cylinder arrangement is not in the description of how the motor/engine ...

  8. Supermarine Spitfire variants: specifications, performance ...

    en.wikipedia.org/wiki/Supermarine_Spitfire...

    Spitfire Mk VIII. Merlin 63, 66, or 70 engine with a two-stage, two-speed supercharger. With the two-stage, two-speed supercharger, two sets of power ratings can be quoted. As an example, the maximum power generated by the Merlin 61 was 1,565 hp (1,167 kW) at 12,250 feet (3,730 m) (critical altitude) at M.S. speed, using + 15 lb/in² "boost". [7]

  9. Engine balance - Wikipedia

    en.wikipedia.org/wiki/Engine_balance

    Engine balance refers to how the inertial forces produced by moving parts in an internal combustion engine or steam engine are neutralised with counterweights and balance shafts, to prevent unpleasant and potentially damaging vibration. The strongest inertial forces occur at crankshaft speed (first-order forces) and balance is mandatory, while ...

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