Results 261 to 270 of about 67,962 (296)

Determination of Attack Angle and Tilt Angle of a Cutting Pick

Advanced Materials Research, 2013
Mechanical excavators play an important role in mining and construction. An excavation machine cuts rocks using its cutterhead which is normally composed of a large number of cutting picks. These picks are installed on a drum with certain attack angles, tilt angles and skew angles. These angles, especially attack and tilt angles, will affect the forces
Yong Sun, Xing Sheng Li
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Low Cost Accurate Angle of Attack System

55th AIAA Aerospace Sciences Meeting, 2017
A low-cost ($100) differential pressure-based commercial off-the-shelf angle-of-attack data acquisition system was designed, successfully reduced to practice, and wind-tunnel and flight tested.
Borja Martos, David F. Rogers
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Aerodynamics of finned missiles at high angle of attack

9th Aerospace Sciences Meeting, 1971
A theoretical and experimental investigation of the aerodynamics of finned missiles at high angle-of-attack is presented. The interaction of the body vortex wake region with the missile fins aiid the resulting effect on the forces and moments produced by the fins is studied.
WILLIAM L. OBERKAMPF, JOHN D. NICOLAIDES
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High Angle-of-Attack Aerodynamics

Annual Review of Fluid Mechanics, 1995
High angle-of-attack (high-IX) aerodynamics has been a key element in airplane design beginning with the first attempts at unpowered manned flight using gliders in the 1 800s and extending to the present day with civil and military airplanes. High-IX aerodynamics is commonly perceived as arising on an airplane at a physically large angle of attack with
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Prediction of Shock Angles Caused by Sharp Delta Wings with Attack Angle

AIAA Journal, 1998
Using a combined method, one can specify the trace of the shock generated by a swept sharp fin on the wall for various angles of attack α, sweep angles λ, half-apex angles e, and Mach numbers ...
S. Koide, A. F. Loria, H. Babinsky
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Turbulent flow over vehicles at angle of attack

20th Aerospace Sciences Meeting, 1982
I recent years the parabolized Navier-Stokes (PNS) equations have frequently been used to calculate steady viscous supersonic flows about a variety of three-dimensional geometries at angle of attack. Some results have also been obtained for turbulent flows where an algebraic turbulent eddy-viscosity model has been incorporated in the PNS equations ...
W. S. Helliwell, I. E. Alber, R. P. Dickinson, S. C. Lubard   +3 more
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Inlets for high angles of attack

Journal of Aircraft, 1976
Different inlet designs for high angle of attack STOL and VTOL applications were tested in a subsonic wind tunnel. Three removable entry lips having contraction ratios of 1.30, 1.34 and 1.38 were tested with a single diffuser. The internal contour of each entry lip was an ellipse with a major to minor axis of 2.0.
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Calculation of the flow on a cone at high angle of attack

6th Fluid and PlasmaDynamics Conference, 1973
2 Kreith, F. and Sonju, O. K., "The Decay of a Turbulent Swirl in a Pipe," Journal of Fluid Mechanics, Vol. 22, No. 2, 1965, pp.257-271. 3 Menis, M., "Effect of Vortex Decay on Pipe Flow," Rept. 61, Nov. 1960, Gas Turbine Lab., MIT, Cambridge', Mass. 4 Youssef, T. E. A., "Some Investigations on Rotating Flow with a Recirculation Core in Straight Pipes,"
Lubard, Stephen C., Helliwell, William S.   +1 more
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Angle of Attack as an Aid to Flying

SAE Technical Paper Series, 1965
<div class="htmlview paragraph">Application of the early ideas of Wilbur and Orville Wright, in regards to angle of incidence, has provided the Navy with an effective method of controlling airplane approach and landing speeds. The current Navy angle-of-attack systems have commercial applications for use in landing, clear air turbulence, stall ...
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Viscous Flow over Spinning Cones at Angle of Attack

AIAA Journal, 1973
A numerical finite-difference method is developed for evaluating the Magnus coefficients on spinning cones in laminar flow. The merged layer, the strong interaction region, and the downstream boundary layer are all considered. The numerical method is a predictor-corrector scheme developed for three-dimensional flows with or without crossflow diffusion.
Lin, T. C., Rubin, S. G.
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