Skin friction drag. Drag generated between air molecules and the solid surface of the aircraft.
Slant range. The horizontal distance from the aircraft antenna to the ground station, due to line-of-sight transmission of the DME signal.
Skin Friction: That portion of drag which is covered by the movement of a fluid (e.g. air) over the surface of a body (e.g. aerofoil). The rougher the surface the greater the skin friction.
skin friction
The leading edge of a wing will always produce a certain amount of friction drag ...
Skin Drag - Costume party in San Francisco.
Slip - Apparel worn by some pilots.
Split S - What happens to the pants of overweight pilots (also see "Gross Weight").
SKIN - The external covering of an aircraft's basic inner structure.
SLAT - Auxiliary airfoil surface, mounted forward of a main airfoil, to maintain a smooth airflow over the main airfoil at high angles of attack.
The skin smoothness of aerodynamically structures determines the resistance of the skin to airflow. If such resistance exists, the stream line of a thin layer (also referred to as the boundary layer) is disturbed and affecting the adjacent layers.
Proper skin protection is a must with epoxies due to skin dermatitis that can be caused by the chemical. In the next issue I will discuss how to properly protect your skin from this problem.
The outer skin is in place and the large size and extreme lightness of the structure is clearly shown. The passenger cabin of the Deutschland, another rigid dirigible of the Zepellin series is shown at Fig. 320.
Stressed Skin
An outer covering used on wings and fuselages, designed to carry the tension and compression forces encountered in flight.
Stringer ...
In a single-skin laminate, the outside surface is in tension, the inside surface is in compression, and the middle is in shear.
Tension and compression are generally easy to visualize.
A later form of this structure uses fiberglass cloth impregnated with polyester or epoxy resin, instead of plywood, as the skin.
Aluminum, once the basic structure is finished, is ready to be flown because the skin actually is the skin.
Visually look over the wing for dents or wrinkled skin (high load damage). Proceed from the root towards the wingtip inspecting the leading edge.
If you look at the corner of the skin to the left of the position light, you will often see it bent down from the way people ground handle the helicopter.
MONOCOQUE - Type of fuselage design with little or no internal bracing other than bulkheads, where the outer skin bears the main stresses; usually round or oval in cross-section.
On a golf ball, 99% of the drag is form drag, and only 1% is skin-friction drag. The dimples in the golf ball provoke turbulence, adding energy to the boundary layer.
An aircraft equipped with wing fuel tanks may have fuel that is at a sufficiently low temperature such that it lowers the wing skin temperature to below the freezing point of water.
More importantly, the airframe was designed so that the skin of the aircraft bore most of the stress on the plane during flight. There was no interior skeleton of metal spars, thus giving passengers more room than they had in the 247.
Debonding - Separation of the bond between the skin laminates and the core of a composite structure.
Related Definitions from Aviation Glossary
Line Maintenance
Datum
Fatigue Failure
Flight Safety Critical Aircraft Part (FSCAP)
Vital Point ...
Monocoque A method of construction in which the skin carries the whole or the greater part of the main loads. Most modern training aircraft are of a monocoque design
N. 1 Navigator responsible for the navigation of the aircraft ...
With form following function, my two STOL aircraft designs have an inherent beauty that is more than skin deep once one understands the aerodynamic and construction features that have gone into these designs, ...
John Pennekamp is actually an underwater park, popular with skin divers for its hundreds of varieties of fish and plants. Covering over 75,000 acres, it's part of the only living coral reef formation in North America.
MC stands for Metal Concept. The airplane is primarily aluminum skin over the welded-steel-tube fuselage and
aluminum-ribbed wing. The rounded, bluntish nose section is the only major composite airframe part.
This mixture would prove to be deadly to the airships: the explosive bullets could pierce the Zeppelin's tough outer skin and cause leaks on the inner gas bags.
Each all-metal wing panel is a semi cantilever, semi-monocoque type, with two main spars suitable ribs for the attachment of the skin.
A tapered, spring-steel strut supports each main wing, and a steerable nose wheel is mounted on an air-oil strut.
The minimalist structure you see is lightweight yet strong because the aluminum skin is integral to the fuselage's strength and integrity. It's also less costly to build than the steel-tube structures of old.
Leave the wing overnight to dry. Sand down the rough edges until smooth. Use progressively finer sandpaper until the surfaces are smooth. Once the frame of the wing is complete, skin it either with additional balsa wood or fabric.
"Skin-friction" resistance has not been mentioned nor need it be more than to say that any surface moving through air attributes part of its resistance to the actual friction of the air against it, and therefore should be as smooth as possible.
A Semi-Monocoque design is a series of aluminum ribs, joined by strengthening bars known as 'stringers,' that are then covered over with an aluminum skin.
It includes the form drag and skin friction associated with the fuselage, cockpit, engine cowlings, rotor hub, landing gear, and tail boom to mention a few. Parasite drag increases with airspeed.
 See also: Aircraft, Flight, Speed, Plane, Aviation
  
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