An airfoil boat structure with joined-wing configuration is provided with a pair of front wings and a pair of rear wings. The two pairs of wings form forward and backward proper sweep angles and are connected at the tips. Therefore, the airfoil boat is high in structural strength and ...
The name is often given to a tail-first airplane, because the lifting surface ahead of the wing acts in the same way as the lift-generating beak, head, and neck of a duck (Fr. canard) Certificate issued by a certifying authority of a sovereign state to show that an airplane meets the...
A wing (or any other similar surface) generates a lift force normal to the discretion of flight by pushing air downward at a given rate. The “downward” acceleration given to a mass of air, involving a change in momentum, produces an “upward” reaction, felt as lift. The size of the...
The ability of t... SP Haase,RK Smith - 《Geophysical Fluid Dynamics》 被引量: 27发表: 1989年 Structural Modeling and Optimization of the Joined-Wing of a High-Altitude Long-Endurance (HALE) Aircraft Recent research trends have indicated an interest in High-Altitude, Long-Endurance (HALE) ...
CMC AIRFOIL WITH SHARP TRAILING EDGE AND METHOD OF MAKING SAME An airfoil component includes an insert that has angled faces joined at an edge that provides an airfoil trailing edge. An outer CMC fiber layer overlaps t... SO Duelm,MG Mccaffrey 被引量: 0发表: 2021年 ...
An airfoil for a sports vehicle is mounted near the rear of the hood. It has several joined panels of various angles designed to direct the flow of air upwardly, and partially to the side, in front of the windshield. Details are shown for clips to fasten the airfoil to the hood.收藏...
Each airfoil is integrally joined to its platform at a funnel-shaped fillet along the pressure side of the airfoi... CP Lee,JC Schilling,AR Wadia 被引量: 24发表: 2006年 Airfoil This invention relates to airplanes and more particularly to airfoils used in the construction thereof. With ...
An article of manufacture is disclosed. The article may have a nominal profile generally in accordance with Cartesian coordinate values of X, Y and Z set forth in TABLE A. X and Y m
14.The airfoil of claim 10, wherein:the spar includes first and second spar members each having substantially C-shaped cross section, andthe spar members are joined together back-to-back. 15.The airfoil of claim 10, further comprising:an inner wing skin,a wing skin core sandwiched between ...
An aircraft wing comprises a plurality of integral rib- and skin-forming sections 4 disposed longitudinally about a spar 2, the sections being joined adhesively with each other and with the spar. The sections may be moulded of glass fibres in a resinous base and may be additionally secured to...