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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. Piper PA-34 Seneca - Wikipedia

    en.wikipedia.org/wiki/Piper_PA-34_Seneca

    The righthand engine is a Lycoming LIO-360-C1E6 engine variant, the "L" in its designation indicating that the crankshaft turns in the opposite direction, giving the Seneca counter-rotating engines. The counter-rotating engines eliminate the critical engine limitations of other light twins and make the aircraft more controllable in the event of ...

  4. P-factor - Wikipedia

    en.wikipedia.org/wiki/P-factor

    P-Factor therefore determines which engine is critical engine. [6] For most aircraft (which have clockwise rotating propellers), the left engine is the critical engine. For aircraft with counter-rotating propellers (i.e. not rotating in the same direction) the P-factor moments are equal and both engines are considered equally critical. Fig. 1.

  5. List of Lycoming O-360 variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Lycoming_O-360...

    The Van's Aircraft RV-8 homebuilt aircraft is often fitted with a 200 hp IO-360 engine. The largest engine that is normally fitted to the Thorp T-18 homebuilt aircraft is the 200 hp IO-360 engine. IO-360-A1A 200 hp (149 kW) at 2700 rpm, Minimum fuel grade 100 or 100LL avgas, compression ratio 8.70:1.

  6. Category:Aircraft engines - Wikipedia

    en.wikipedia.org/wiki/Category:Aircraft_engines

    Critical engine; D. Ducted fan; Duesenberg 16-valve straight-4 aero engine; E. Engine pressure ratio; Exoskeletal engine; F. Flat rated; Ford Model A engine; Free ...

  7. Minimum control speeds - Wikipedia

    en.wikipedia.org/wiki/Minimum_Control_Speeds

    V SSE safe single-engine speed is the minimum speed to intentionally render the critical engine inoperative, established and designated by the manufacturer as the safe, intentional, one engine inoperative speed. [4]

  8. 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 ...

  9. Aerojet Rocketdyne AR1 - Wikipedia

    en.wikipedia.org/wiki/Aerojet_Rocketdyne_AR1

    The engine was conceived in 2014, and received US government funding to build a prototype engine in 2016. [2] By 2018, the USAF had committed US$295 million of government funding to develop the engine and build an initial engine prototype, while Aerojet will put US$86 million of private capital into the project through the prototype build. [3]