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The center of gravity (CG) of an aircraft is the point over which the aircraft would balance. [1] Its position is calculated after supporting the aircraft on at least two sets of weighing scales or load cells and noting the weight shown on each set of scales or load cells. The center of gravity affects the stability of the aircraft.
[1] [2] [3] An aircraft's gross weight will decrease during a flight due to fuel and oil consumption. An aircraft's gross weight may also vary during a flight due to payload dropping or in-flight refuelling. At the moment of releasing its brakes, the gross weight of an aircraft is equal to its takeoff weight.
Yawing also increases the speed of the outboard wing whilst slowing down the inboard wing, with corresponding changes in drag causing a (small) opposing yaw moment. N r {\displaystyle N_{r}} opposes the inherent directional stiffness which tends to point the aircraft's nose back into the wind and always matches the sign of the yaw rate input.
A flying wing is a tailless fixed-wing aircraft that has no definite fuselage, with its crew, payload, fuel, and equipment housed inside the main wing structure. A flying wing may have various small protuberances such as pods, nacelles , blisters, booms, or vertical stabilizers .
Wings with more than one angle change along the full span are said to be polyhedral. Dihedral angle has important stabilizing effects on flying bodies because it has a strong influence on the dihedral effect. Dihedral effect [1] of an aircraft is a rolling moment resulting from the vehicle having a non-zero angle of sideslip. Increasing the ...
Data from American X&Y Planes General characteristics Crew: one Length: 17 ft 11 in (5.46 m) Wingspan: 38 ft 8 in (11.79 m) Height: 4 ft 11 in (1.50 m) Wing area: 350 sq ft (33 m 2) (approx) Gross weight: 3,900 lb (1,769 kg) Powerplant: 2 × Lycoming O-145 four-cylinder horizontally opposed air-cooled piston engines, 65 hp (48 kW) each (original engines) Powerplant: 2 × Franklin 6AC-264F2 six ...
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This creates a shock wave that produces a powerful form of drag known as wave drag, and gives rise to the concept of the sound barrier. The speed at which these shocks first form, critical mach, is a function of the amount of curvature. In order to reduce wave drag, wings should have the minimum curvature possible while still generating the ...