Spin-decay prediction for gun-launched liquid-filled projectiles

Kitchens, Clarence W.; Gerber, Nathan; Sedney, Raymond

doi:10.2514/6.1977-1158

Cited by 2 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This author doubts that this pr escription is generally vali d. Kitchens et al (1975) made a comparative study of four different schemes , includ ing the earlier ver sion (Wang 1974a) of scheme 2 (~3. 4b) and the scheme of t~ryer ~ Sanders ; calculation s were made for a parabo lic flow over a flat plate .…”

Section: Comparison With Other Methodsmentioning

confidence: 98%

“…Other authors (Lin ~ Rubin 1974, Kitchens et al, 1975, Dwyer ~ Sanders 1976) sought to develop difference schemes that do not require such circu inferential initial profiles. In the scheme used by Dwyer ~ Sanders the crossf low…”

Section: Comparison With Other Methodsmentioning

confidence: 99%

“…, are accounted for (Kitchens et al 1975) . It is true that their scheme is implicit in the normal direction along which all grid point s are calculated simultaneous ly; and in this sense , the diffus ive nature is loosely modeled.…”

Section: Comparison With Other Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Boundary layer over spinning blunt body of revolution at incidence including Magnus forces

Wang

1978

Proc. R. Soc. Lond. A

View full text Add to dashboard Cite

An incompressible laminar flow over a spinning blunt-body at incidence is investigated. The approach follows strictly the three-dimensional boundary layer theory, and the lack of initial profiles is readily resolved. The rule of the dependence zone is satisfied with the Krause scheme, and complete numerical solutions are obtained for an ellipsoid of revolution at 6° incidence and two spin rates. Spinning causes asymmetry which, in turn, introduces the Magnus force. The asymmetry is most pronounced in crossflow, but is also noticeable in the skin friction and displacement thickness of the meridional flow. A variety of crossflow profiles are determined as are the streamline patterns in the cross- and meridional-plane which are especially useful in visualizing the flow structure. Detailed distribution of skin friction, displacement thickness, and centrifugal pressure are presented. A negative crossflow displacement thickness is found to be physically meaningful. The Magnus forces due to the crossflow skin friction and the centrifugal pressure are determined; these two forces partly compensate for each other. At lower spin rate, the frictional force is larger, resulting in a positive Magnus force. At high spin rate, the opposite is obtained. At high incidence (30°) the present boundary layer calculations could be carried out in the longitudinal direction, only up to the beginning of an open separation.

show abstract

Section: Comparison With Other Methodsmentioning

confidence: 98%

Section: Comparison With Other Methodsmentioning

confidence: 99%