Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Vernon J. Rossow"'
Autor:
Vernon J. Rossow, Anthony P. Brown
Publikováno v:
Journal of Aircraft. 47:1076-1083
The study reported here was initiated by observations of condensation trails that occur behind transport aircraft at cruise altitudes under certain atmospheric conditions. The objective of the study reported is to explain why the structure of condens
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 43:1424-1428
A factor that limits airport arrival and departure rates is the need to wait between operations for the wake vortices of preceding aircraft to decay to a safe level. As airport traffic demand increases, creative methods will be needed to overcome the
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 43:709-712
The origin of the exact, closed-form, self-similar exponential solution for the laminar decay of an isolated two-dimensional vortex in a viscous incompressible fluid is studied to find a proper name for the function. Two major contributions to the so
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 43:381-385
Classical wing theory is extended downstream from a flat vortex sheet to include vortex-wake configurations that can be considered as fully rolled up into a vortex pair. Classical wing theory was chosen as the method to be used because it is based on
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 41:1098-1105
A method developed by Betz for the rolled-up structure of vortices shed by isolated wing tips is extended to vortex pairs (two vortical regions of opposite sign), which are shed by wings of finite span. The present analysis again uses the invariants
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 39:587-596
Lift-generated vortex wakes of subsonic transport aircraft are known to pose a rolling-moment hazard to in-trail following aircraft. Hazardous wake encounters are now avoided by maintaining in-trail separation distances that are larger than needed fo
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 38:977-987
A preliminary theoretical study is presented of a concept whereby the vortex wakes shed by a formation of aircraft can be redirected to produce a large region below the formation that is free of vortices. The redirection of the vortices is accomplish
Autor:
Vernon J. Rossow
Publikováno v:
Progress in Aerospace Sciences. 35:507-660
The flow fields of vortices, whether buoyancy-driven or lift-generated, are fascinating fluid-dynamic phenomena which often possess intense swirl velocities and complex time-dependent behavior. As part of the on-going study of vortex behavior, this p
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 34:592-599
The method derived for the roll-up of vortex sheets shed by lifting wings has been extended so that it can be applied to complex wakes that roll up into more than one vortex pair. Although these so-called extended-Betz methods often predict realistic
Autor:
Vernon J. Rossow
Publikováno v:
Journal of Aircraft. 33:539-546
Since the vortex wakes of large transport aircraft can pose a hazard to smaller following aircraft during landing and takeoff operations, certain separation guidelines are followed while aircraft are in the approach and departure corridors at airport