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JPH0672570B2 |
An aircraft is provided with an aircraft base pressure drag reduction means having a means for ducting air on board an aircraft wherein the air produces ram air drag, a means for using the air for work, and a means for ducting the used a...
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JPH06200909A |
PURPOSE: To decrease a drag by increasing the flow rate of turbulence. CONSTITUTION: Turbulence in a wall-bounded fluid flow field 10 having a turbulent wall region is characterized by a system of roll pairs 14, 16 extending in the direc...
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JPH06191491A |
PURPOSE: To establish discrete zones of pressure on the surface of a perforated panel of the type typically used for laminar flow control. CONSTITUTION: A system for establishing discrete zones of pressure on the surface of a perforated ...
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JPH06185453A |
PURPOSE: To convert electric energy into useful mechanical work in controlled mode by thermal expansion of a fluid by means of a plurality of electrically activated miniature heaters. CONSTITUTION: A surface having an array of cavities 1...
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JPH05310193A |
PURPOSE: To retain a laminar boundary layer so as to reduce friction resistance acting on the surface of an object placed within a fluid of an aircraft or the like by sticking a tape having a number of through holes to the surface of the...
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JPH05278691A |
PURPOSE: To provide the reducing agent of a resistance (aerodynamic resistance to drag or forward) due to the adding effect of a phenomenon generated on a surface such as a turbulent flow, ice coating, and contamination due to outer mate...
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JPH0561000U |
(57) [Summary] [Purpose] Slow, stable and safe, takeoff, ascent, descent, landing almost vertically, cruising fuel-efficiently when cruising, it is a comprehensive transport aircraft of Door To Door by sea, land and air. [Structure] Duri...
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JPH05187960A |
PURPOSE: To suppress noise by the destroy of vortex by providing a plate having a length sufficiently extending to a downstream side from the rear end of a vortex flow generating part and being higher than the centerline of the vortex. C...
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JPH05147572A |
PURPOSE: To reduce flowing frictional resistance by arranging microscopic cirrus bodies distributively on an object surface. CONSTITUTION: A single fiber type, a water grass like string type formed by cutting a thin film and so on are ef...
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JPH05139385A |
PURPOSE: To aspirate air around a main aerofoil to reduce the loss of horse power by drilling plural number of holes on the main aerofoil outside plate of an aircraft, and making these holes communicate with a pressure regulating chamber...
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JPH05118798A |
PURPOSE: To suppress a temperature rise of a steering wing and to suppress decreases in strength and rigidity of the wing by preventing transfer of heat generated at the time of flying at a high speed to the wing. CONSTITUTION: A high pr...
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JPH05502637A |
An airfoil (30) having a suction surface (36) and a pressure surface (38), the surfaces joined together at leading (32) and trailing portions (34) of the airfoil, the pressure surface diverging toward the suction surface at a corner, the...
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JPH05501902A |
A rotor for collecting energy from or for imparting energy to a flowing medium has a hub and at least one rotor blade (10). In order to develop such a rotor so that its efficiency, both for collecting energy from and for imparting energy...
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JPH0516892A |
PURPOSE: To check a separation phenomenon as well as to improve any installing and unstable phenomena by controlling the separation with a vortex generator, shifting and adjusting a position to a body surface bordering a flow, on the bas...
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JPH04322956A |
PURPOSE: To form a surface of a work with the surface condition for efficiently promoting a flow of a fluid by making a coated abrasive article having an abrasive composite in the predetermined pattern put into contact with a work. CONST...
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JPH04321489A |
PURPOSE: To suppress generation of shock waves, reduce the resistance, enhance the flight efficiency, and suppress air tearing by jetting a gas having a larger sonic velocity than the surrounding air from the surface of an airplane wing....
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JPH04314692A |
PURPOSE: To prevent air stream exfoliation generated in an upper surface of aircraft main wings. CONSTITUTION: An air blowout port (slit 3) provided in a rear half part of main wing upper surfaces, air intake port provided in a lower sur...
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JPH04100996U |
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JPH04201694A |
PURPOSE: To simplify the construction of an air blowing device and reduce the weight thereof by keeping continuity between an air intake on the lower side of a fuselage- wing blend section and an air blow hole at the side of the blend se...
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JPH04138994A |
PURPOSE: To enable reduction of air resistance, irrespective of air flow direction, by arranging numerous projections having a specific height, adjacently to each other on the plane of a solid body in contact with air flow. CONSTITUTION:...
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JPH04121298A |
PURPOSE: To prevent peeling of the air stream on a vertical tail wing and obtain an airplane with no sag section of the yawing moment even when the angle of sideslip is large by providing flaps or gas blowoff devices on the tail wing, an...
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JPH04118397A |
PURPOSE: To improve the extent of ameliorations in both lift and pitching moment characteristics, etc., by installing an actuator and a power plant moving a fence, and making this fence operate so as to be projected over a wing surface a...
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JPH04103494A |
PURPOSE: To restrain turbulence generated in changing the flow direction of fluid effectively so as to make the flow smooth by providing a plurality of flat speakers at the wings of a flying body, and thereby radiating sound waves to the...
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JPH0466397A |
PURPOSE: To reduce vibration and improve descending performance in a helicopter, provided with a body formed into approximately rectangular cross section from the view in the flying direction, by providing rectifying means for preventing...
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JPH0466392A |
PURPOSE: To dissolve the unstable and unsafe vibration of a balloon so as to secure safety by providing irregularity on the surface of the balloon used for publicity or the like, thereby reducing the drifting of the balloon on the wind. ...
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JPH03112496U |
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JPH03189085A |
PURPOSE: To form at least groove, rib or different intensity strip in or on the surface of metal by forming the material surface by using a mask of a metallic sheet having at least one non parallel sided through-apertures. CONSTITUTION: ...
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JPH03500508A |
Drag reducing riblets, which may be grooves (7) or formations of other shape, are produced in various ways. A coating (3) of a thermo-plastic material is first applied to the surface (4) and the coating is then deformed by the applicatio...
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JPH02229687A |
PURPOSE: To reduce a drag relating to a surface by forming a pattern irradiating the surface of an article with a laser beam. CONSTITUTION: A mask 14 is irradiated through a beam operation optical device 12 and next a target 18 is irradi...
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JPH02501213A |
A basic airfoil has its operating performance improved by incorporating one or more apertures in the airfoil adjacent its trailing edge. These apertures (24) extend from the upper surface (18) of the airfoil down through to the lower sur...
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JPH0281796A |
PURPOSE: To provide soft and extendible/contractible substrate suitable for swimming suits, etc., by installing a section of film having a patterned surface to reduce drag resistance when fluid flows on the substrate at a front edge, and...
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JPH0210759B2 |
The device consists of a pref. steerable body (10) with a rounded thick symmetrical cross-section in the direction of the air flow (V). A rigid cylindrical envelope (50) defines a semicircular trailing edge and is associated with an e.g....
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JPH01257694A |
PURPOSE:To absorb and remove disturbance which develops in the span direction of an aircraft, so as to keep a laminar flow by providing span-directional suction grooves and wing chord-directional suction grooves on the wing surface of th...
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JPH01247296A |
PURPOSE:To reduce the turbulence resistance of a fluid to a great extent with simple construction by furnishing a number of strings on the surface of a resistance member, which are extending in the fluid direction, and arranging these st...
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JPH01132499U |
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JPH01122784A |
PURPOSE: To lower the base resistance while preventing the generation of peeling of a boundary layer in a flowing direction in a moving body having an unstreamlined downstream end by arranging a plate member continuously provided with pl...
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JPS6416497A |
PURPOSE: To suck and thrust out air via bore holes on a pylon surface and to reduce a wake produced by a pylon by injecting gas into the air quantity near the rear edge of the pylon. CONSTITUTION: A pylon 12 has a tube 60 connected to a ...
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JPS63263198A |
An aerodynamic or hydrodynamic surface is provided with so-called "riblets" (R,r) for reducing drag by modification of the turbulent boundary layer. The riblets (R,r) comprise flow-aligned elongate projections of small height (hL<+>, h<+...
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JPS63258287A |
PURPOSE:To control a flow area for improving the stall elevation of a blade by permitting an electromagnetic force to act on the negative pressure surface of the blade when the blade-type substance having an elevation moves in electrical...
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JPS63173795A |
A projectile having a downstream extending surface of revolution (306) which terminates as a blunt base (304) has a plurality of circumferentially spaced apart U-shaped, downstream extending troughs in its surface. Each trough is essenti...
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JPS63173794A |
A body (30) adapted to move downstream through a fluid has a downstream extending smooth surface (32) terminating at a blunt base. A plurality of adjacent U-shaped, downstream extending troughs (40) in the smooth surface (32) intersect t...
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JPS63170194A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS63170193A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS63170195A |
An airfoil (400) has a plurality of spaced apart, U-shaped troughs (408,410) in either or both its suction or pressure surface (402,404) in the trailing edge region. Each trough (408,410) extends in a direction generally parallel to the ...
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JPS6318559B2 |
An improved helicopter designed to create minimum drag and turbulence in which the main rotor pylon 26 has a top surface 36 having a forward portion 36a defining the rotor head well aperture so as to have a selectively curved lip on the ...
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JPS6341296A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6328796A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6317998U |
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JPS6323007A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS62283203A |
A diffuser (100) has a plurality of adjacent, adjoining, alternating U-shaped troughs and ridges (118,120) which extend downstream over a portion (122) of the diffuser surface defining an undulating surface portion of the diffuser wall. ...
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