Metalurgija, 2018 This paper presents the new technology applied in a three-roll skew rolling railway hollow shaft. The three-roll skew rolling forming simulation is conducted in railway hollow shaft with 1 : 5.
C. Xu, X. D. Shu
doaj
Experimental and theoretical aerodynamic characteristics of two hypersonic cruise aircraft concepts at Mach numbers of 2.96, 3.96, and 4.63 [PDF]
The longitudinal and lateral directional aerodynamic characteristics for two Mach 5 cruise aircraft concepts were determined for test Mach numbers of 2.96, 3.96, and 4.63.
Pittman, J. L., Riebe, G. D.
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Prediction of forces and moments for flight vehicle control effectors: Workplan [PDF]
Two research activities directed at hypersonic vehicle configurations are currently underway. The first involves the validation of a number of classical local surface inclination methods commonly employed in preliminary design studies of hypersonic ...
Maughmer, Mark D.
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Ground vortex flow field investigation [PDF]
Flow field investigations were conducted at the NASA Ames-Dryden Flow Visualization Facility (water tunnel) to investigate the ground effect produced by the impingement of jets from aircraft nozzles on a ground board in a STOL operation.
Delfrate, John H. +2 more
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Research on the dynamic recrystallization law of cross wedge rolling (CWR) asymmetric hollow shaft
Metalurgija, 2018 To improve mechanical properties of asymmetrical hollow shafts parts, the dynamic recrystallization of asymmetrical hollow shaft can be obtained by cross wedge rolling (CWR) technology.
S. H. Zheng, X. D. Shu, J. Wei
doaj
Thermal-fatigue and oxidation resistance of cobalt-modified Udimet 700 alloy [PDF]
Comparative thermal-fatigue and oxidation resistances of cobalt-modified wrought Udimet 700 alloy (obtained by reducing the cobalt level by direct substitution of nickel) were determined from fluidized-bed tests.
Barrow, B. J., Bizon, P. T.
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TERMS OF SEPARATION OF ASSORTMENT ON CUT-TO-LENGTH SECTIONS WITH WEDGE-ROLLING KNIVES
Литьë и металлургия, 2011 The article is dedicated to the actual problem of separation of bar stock into measuring slugs using the way of cross-wedge rolling. The influence of edge angle of blade disk and coefficient of contact friction on effort of bar separation is noted.
L. A. Isaevich, M. I. Sidorenko
doaj
The present status and the future of missile aerodynamics [PDF]
Some recent developments in the state of the art in missile aerodynamics are reviewed. Among the subjects covered are: (1) tri-service/NASA data base, (2) wing-body interference, (3) nonlinear controls, (4) hypersonic transition, (5) vortex interference,
Nielsen, Jack N.
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Influence of temperature field on surface quality of cross wedge rolling (CWR) aluminum alloy shaft
Metalurgija, 2020 Reasonably determination of the rolling temperature of the cross wedge rolling (CWR) is the key to o btain the qualified surface of the aluminum alloy shaft parts.
D. G. Wang +3 more
doaj
Effect of Reynolds Number and Mach Number on flow angularity probe sensitivity [PDF]
Preliminary calibrations were performed on nine flow angularity probes in the Langley 7- by 10-Foot High-Speed Tunnel (7 x 10 HST) and the Langley 0.3-Meter Transonic Cryogenic Tunnel (0.3-m TCT).
Adcock, J. B., Smith, L. A.
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