form drag वाक्य
उदाहरण वाक्य
मोबाइल
- Form drag depends on the longitudinal section of the body.
- In addition, the form drag created by the spoilers directly assists the braking effect.
- When liquids are present and / or form drag is present, the analogy is conventionally known to be invalid.
- Form drag is due to the effect of the boundary layer and thin wake on the pressure distribution around the airfoil.
- The streamlined boat tail design reduces this form drag by allowing the air to flow along the surface of the tapering end.
- The drag coefficient of any object comprises the effects of the two basic contributors to fluid dynamic drag : skin friction and form drag.
- These structures are covers for gaps and spaces between parts of an aircraft to reduce form drag and interference drag, and to improve appearance.
- Importantly for aeronautics, Prandtl's theory can be applied directly to streamlined bodies like airfoils where, in addition to surface-friction drag, there is also form drag.
- On landing, however, the spoilers are nearly always fully deployed to help slow the aircraft . The increase in form drag created by the spoilers directly assists the braking effect.
- Also, a fixed-gear taildragger exhibits less interference drag and form drag in flight than a fixed-gear tricycle aircraft whose nosewheel may sit directly in the propeller's slipstream.
- Efficiency can be gained by mounting a propeller behind the fuselage, because it re-energizes the boundary layer developed on the body, and reduces the form drag by keeping the flow attached to the fuselage.
- This design is believed to work because the combination of the gentle ramp angle and the curvature profile of the walls creates counter-rotating vortices which deflect the boundary layer away from the inlet and draws in the faster moving air, while avoiding the form drag and flow separation that can occur with protruding scoop designs.
- The drag force can be separated into two portions, " lift-induced drag ", which is inherent in the wing ( primarily arising from wingtip vortices ), and " parasitic drag ", including skin friction drag from the friction of air and body surfaces and form drag from the bird's frontal area.
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