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Showing 1 to 20 of 33 for “"delta wing"”.
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Heat transfer effects on a subsonic delta wing
… and boundary layer characteristics of a heated delta wing. Thus, a symmetrical 60° delta wing was tested up to twice freestream temperature in the Virginia Tech 6' x 6' stability wind tunnel. Summaries of the characteristics of the flow over the unheated wing and the theoretical effects of heat …
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A vortex-lattice method for Delta wing aerodynamics
… the problem of flow past a highly swept, slender wing with sharp leading edges. The lifting surface is modelled as a bound vortex sheet, while the wake is modelled as a force-free vortex sheet. The solution is obtained by the use of a unsteady Vortex-Lattice Method which includes the effect of …
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Numerical simulation of hypersonic flow over a blunt delta wing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Adaptive mesh Euler equation computation of vortex breakdown in delta wing flow
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Analysis of the flow structure and reattachment over accelerating non-slender delta-wing planforms
<p>Delta wings are triangular-shaped lifting surfaces, and in past decades, they have been found to have important applications in maneuvering combat aircraft and supersonic aircraft. Slender, or high swept, delta wings have been widely studied in early investigations since they suffer less wave …
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Analysis of the vortical flow around a 60 degree delta wing with vortex flap
… were conducted on a 60° swept, flat plate, delta wing with a leading edge vortex flap. The pressure distributions were measured over a range of angles of attack starting from zero to 40° in 5° interval and flap deflection angles from zero to 45° with 5° increments at a Reynolds number of …
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Air-Side Heat Transfer Enhancement for Offset -Strip Fin Arrays Using Delta Wing Vortex Generators
The re-generated streamwise vortices in the middle of the array are found to be weaker and decay more quickly in the flow direction than the streamwise vortices generated at the inlet of the array.
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The lateral-directional characteristics of a 74-degree delta wing employing gothic planform vortex flaps
… characteristics of a generic 74-degree delta wing-body configuration employing the latest generation, gothic planform vortex flaps has been conducted. In addition, the theoretical estimates from VORSTAB were compared against experimental data to aid in documenting this new method. …
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Theoretical Determination of the Pressure Distribution on a Lifting, Subsonic Delta Wing of Arbitrary Aspect Ratio
Made available in DSpace on 2015-05-12T22:35:16Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7121245.PDF: 2587687 bytes, checksum: d72f8d6b7431e2dc68895ac01b30651d (MD5) Previous issue date: 1971
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Hybrid 3-D Euler/Navier-Stokes calculations of transonic vortex flows over the NTF delta wing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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An experimental study of the relationship between forces and moments and vortex breakdown on a pitching delta wing
… flow mechanisms on a 70-deg. sharp leading-edge delta wing model at both static and dynamic conditions at a Reynolds number of 1.43 $\times$ 10$\sp6$. Large amplitude oscillatory motions were produced by sinusoidally pitching the model over a range of reduced frequencies. Ramp motions were …
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A numerical study of the effects of leading edge vortex flaps on the performance of a 75° delta wing
… the aerodynamic loads have been found on a 75° delta wing with and without leading edge vortex flaps. The flap had an area approximately 26 percent of the wing area with a constant chord of 6.7 percent of the wing mean aerodynamic chord and was deflected at 30°. Results for lift, drag, axial …
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Analysis of pressure data obtained at transonic speeds on a thin low-aspect-ratio cambered delta wing-body combination
… of a thin conical cambered low-aspect-ratio delta wing in combination with a basic body and a body indented symmetrically for a Mach number of 1.2 in accordance with the supersonic area rule. The tests were conducted at Mach numbers from 0.60 to 1.12 and at 1.43 and at angles of attack …
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All The King's Horses: The Delta Wing Leading-Edge Vortex System Undergoing Vortex Breakdown: A Contribution to its characterization and Control under Dynamic Conditions
The quality of the flow over a 75 degree-sweep delta wing was documented for steady angles of attack and during dynamic maneuvers with and without the use of two control surfaces. The three-dimensional velocity field over a delta wing at a steady angle of attack of 38 degrees and Reynolds number of …
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The Development and Control of Axial Vortices over Swept Wings
… in the post-breakdown flowfield of a 75° sweep delta wing at 40° angle of attack was studied with dual and single point hot-wire anemometry in the Engineering Science and Mechanics (ESM) Wind Tunnel at a Reynolds number Re = 210,000. Data were taken in five crossflow planes surrounding the …
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Near Wall Investigation of Three Dimensional Turbulent Boundary Layers
… flow is a vortical flow created by two half-delta wing vortex generators. Near wall secondary flow features are found. The second flow is an investigation of the first quarter chord tip gap flow in the cascade tunnel. Strong three-dimensional phenomena are found. The third flow investigated …
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Verification and Validation of Open-Source Simulation Tools for Supersonic Aircraft Aerodynamic Analysis
… turbulent boundary layer, and three-dimensional delta wing are simulated with both solvers. The effects of flux scheme, flux limiters, and Courant-Friedrichs-Lewy (CFL) number on solution accuracy, stability, and solver speed are assessed. The solvers' limitations and their usefulness as …
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