3 edition of Ground-effect analysis of a jet transport airplane found in the catalog.
Ground-effect analysis of a jet transport airplane
Robert E. Curry
by National Aeronautics and Space Administration, Ames Research Center, Dryden Flight Research Facility in Edwards, Calif
Written in English
|Statement||Robert E. Curry and Albion H. Bowers.|
|Series||NASA technical memorandum -- 85920|
|Contributions||Bowers, Albion H., Dryden Flight Research Facility.|
|The Physical Object|
The Russians built a range of ground effect vehicles called ekranoplans. According to Wikipedia: Ground effect vehicles (GEV) fly above any flat . Ground Effect: It's Not a Cushion, it's an Effect of Lift Creation Karl Rader - [email protected] Eye-witnesses, fallen lamp posts and other evidence testify to the flattened final trajectory of Flight 77 in the seconds before it hit the Pentagon on September Some novice commentators claim that this wasn't aerodynamically Size: 52KB.
The airplane leaving ground effect after takeoff encounters just the reverse of the airplane entering ground effect during landing; i.e., the airplane leaving ground effect will (1) require an increase in angle of attack to maintain the same lift coefficient, (2) experience an increase in induced drag and thrust required, (3) experience a. Flying in ground-effect can save typically up to 40% in fuel burn, depending on safe flight height above the water determined by wave conditions. When time is of the essence, SeaStryder can bypass traffic congestion to transport people and products along coastal regions and water routes.
As a ground-effect vehicle, the prototype uses the fast-moving air between the bottom of the vehicle and its track to fly above the y, this air produces drag on planes as they’re. Full text of "Fundamentals of aviation and space technology" See other formats.
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An analysis of the ground effect of a jet transport airplane has been made. Data were obtained from recent flight tests primarily using the constant angle-of-attackapproach technique. Reasonable results were obtained for ground-effect pitching moment and lift increments. These were compared with data from other sources, including.
Title: Ground-Effect Analysis of a Jet Transport Airplane Author: Robert E. Curry and Albion H. Bowers Subject: H Keywords: Ground effect, Controlled impact. Get this from a library. Ground-effect analysis of a jet transport airplane. [Robert E Curry; Albion H Bowers; Dryden Flight Research Facility.].
Ground-effect characteristics of the Tu supersonic transport airplane have been obtained from flight and ground-based experiments to improve understanding of ground-effect phenomena for this class of vehicle.
The flight test program included both dynamic measurements obtained during descendingCited by: 7. An analysis of the ground effect of a jet transport airplane has been made. Data were obtained from recent flight tests primarily using the constant angle-of-attack approach technique.
ground effect aerod ynamics and airplane stability at α = 8 and zero bank angle φ = 0 the increase in the lift coe ﬃ cient is C L = 0. 08, which is eq uivalent to in- crease on 2% (see. A ground-effect vehicle (GEV), also called a wing-in-ground-effect (WIG), ground-effect craft, wingship or ekranoplan (Russian: экранопла́н), is a vehicle that is designed to attain sustained flight over a level surface (usually over the sea) by making use of ground effect, the aerodynamic interaction between the wings and the type is typically intended to operate from.
For fixed-wing aircraft, ground effect is the increased lift and decreased aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface.
When landing, ground effect can give the pilot the feeling that the aircraft is "floating". When taking off, ground effect may temporarily reduce the stall pilot can then fly just above the runway while the aircraft.
Flight Measurements of Ground Effect on the Lift and Pitching Moment of a Large Transport Aircraft (Comet 3B) and Comparison with Wind Tunnel and Other Data by C. O'Leary Aerodynamics Dept., R.A.E., Bedford Reports and Memoranda No. " June, Size: KB. the subsonic jet configuration is only about 1/2O.
Both configurations show significant drag reductions in ground effect. Although these drag reductions would affect the speed bleed-off in a landing flare, further analysis of the ground effects on drag is beyond the scope of this Size: KB.
The first airplane, which was known as a flying machine, was invented by the Wright brothers in In a short period of time, the idea of the airplane became popular and many changes took place.
Ground effect is the increased lift generated by wings when the aircraft is close to the ground. Normally, some of the high-pressure air beneath the wing wraps around to the low-pressure top of the wing.
This destroys some of the lift the wing gen. Robert E. Curry has written: 'In-flight total forces, moments, and static aeroelestic characteristics of an oblique-wing research airplane' -- subject(s): Wings, Swept-back, Airplanes 'Ground. - The "Aquaglide 5" is a five-seat "wing in ground-effect" vehicle powered by a gasoline engine.
Part boat, part hovercraft, when travelling at speed this craft generates enough lift from its stub wings to fly 15 to 30 centimeters above the water. Introduction. The design of multi-element high-lift systems for aircraft has become increasingly important.
Where early attention was mostly focused on maximum lift requirements to satisfy the high cruise wing loading needs of jet transport aircraft while retaining acceptable takeoff and landing distances, more recently the attention has turned to reducing the complexity and weight of the Cited by: Pilots taking off from deep grass, or soft runways will often use ground effect to lift the airplane off the soft surface at a speed too slow to maintain flight out of ground effect.
This reduces the resistance on the wheels and allows the airplane to accelerate to. The Wing Ship Technology Corporation, a South Korean company, is trying to revive the wing in ground effect idea.
South Korea’s armed forces have already agreed to buy some and the firm says it hopes to announce its first commercial sales (to an oil-and-gas firm and a Mediterranean ferry company) shortly. Ground Effect One of the most misunderstood aerodynamic effects is called ground effect.
It is the phenomena when an airfoil is operating close to a boundary such as the ground or water. In many general aviation airplanes this effect produces greater lift and less drag for a given angle of Size: KB. Ground effect is caused by ground interference with airflow patterns around an aircraft when the aircraft is within one wingspan of the surface.
If the approach airspeed is too fast, the aircraft will tend to float down the runway, delaying touchdown of the aircraft. This can create a dangerous condition where the aircraft may actually run out. The ground effect cushion of a wing is roughly half of the wingspan, not double.
A vehicle with a foot wing span would be in ground effect at about 50 feet altitude, measured from the bottom surface of the wing. So in ground effect, lift is created by pushing air downwards and by increased static pressure underneath the wing, like a hovercraft.
And the increased pressure does not come with an induced drag penalty. And that is the main difference: total drag is lower in ground effect than in normal flight.Aircraft performance - making use of the airplane's capabilities and limitations. This page discusses the factors that affect aircraft performance, which includes the airplane weight, atmospheric conditions, runway environment, and the fundamental physical laws governing the forces acting on an airplane.Full text of "NASA Technical Reports Server (NTRS) US and USSR Military Aircraft and Missile Aerodynamics A selected, annotated bibliography, volume 1" See other formats.