This reaction causes an unbalanced moment from the operating engine, which causes another ROLLING moment.ġ3 Torque cont. Lift produced by wing surface only Combined lift produced by induced airflow from engine and wing surfaceġ2 Torque For every action there is an equal and opposite reaction. Three major factors: 1) Accelerated Slipstream 2) Torque 3) P-Factor Significant to multi-engine propeller driven aircraft more than single-engine aircraft due to what? How and why does this happen? Causes a ROLLING moment Refer to Figure 3-8ġ0 Turning Tendencies Conventional vs. – blue line will minimize sink rateĩ Induced Airflow The LIFT generated from the accelerated slipstream being created by the propellers. Single Engine Drift Down: When operating above single engine absolute ceiling, drift down to the single engine absolute ceiling.

Marked with red radial line.(약80kts) Single engine service ceiling: Density altitude at which single engine rate of climb reduces to 50 feet per minute Single Engine Absolute Ceiling: Density altitude at which airplane cannot climb anymore. Single Engine Best Rate of Climb Speed (Vyse): Best rate of climb speed with one engine inoperative – Blue Radial Line Single Engine Best Angle of Climb (Vxse): Best angle of climb with one engine inop Minimum Control Speed (Vmc): minimum control speed with the critical engine inoperative. Maximum Landing Weight: Less than Maximum takeoff weight and must not be exceeded except in emergency FT=(MTOW-MLW)/5*FF FT= flight time MTOW = max takeoff weight MLW = maximum landing weight FF = Fuel flowĪccelerated/Stop Distance : Total distance required to accelerated to Vr experience an engine failure and bring the airplane to a complete stop Accelerated/Go Distance: total distance required to continue the takeoff and climb to 50 feet, assuming an engine failure at Vr or lift-off speed. Maximum ramp Weight : Maximum weight of the airplane at maximum takeoff weight plus fuel for taxi and run-up Maximum Zero Fuel Weight: Maximum weight of the loaded airplane with zero fuel.

Climb - Cruise - Ceiling Useful Load Safety - Two Engines - Redundant Systems Complexity - Dual Systems - Avionics Single Engine Operations Cost Efficiency측면 - Parasite Drag - Fuel Consumption Maintenance측면 - Two engines - Complex SystemĤ Theory Critical Performance is rate of climb in the event of an Engine Failure Misconception: 50% loss of Power would result in 50% loss in climb performance Truth: 50% in loss of horsepower, and reduction of more than 80% climb performance Must consider all the drag and weight on dead engine Presentation on theme: 'Multi-Engine과정.'- Presentation transcript:ģ Multi Engine 장단점 장 점 (Advantages) 단 점 (Disadvantages) Performance

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