Normal impact of a wedge against an elastoplastic wire at subsonic velocity

1993 ◽  
Vol 29 (6) ◽  
pp. 469-473
Author(s):  
Sh. M. Mutallimov
Keyword(s):  
Normal Impact ◽  
Subsonic Velocity

Transonic flow past finite wedges

1952 ◽  
Vol 48 (1) ◽  
pp. 178-187 ◽  
Author(s):  
A. G. Mackie ◽  
D. C. Pack
Keyword(s):  
Incompressible Fluid ◽  
Critical Velocity ◽  
Speed Of Sound ◽  
Compressible Fluid ◽  
Transonic Flow ◽  
Ideal Gas ◽  
Hodograph Method ◽  
Subsonic Velocity ◽  
Flow Past ◽  
Axis Of Symmetry

AbstractThe solution for the flow of an incompressible fluid past an infinitely long wedge with a finite sloping edge (a finite wedge) is generalized by the hodograph method. In the flow thus obtained the axis of symmetry and a sloping edge of the wedge are again part of one streamline. It becomes possible to describe the flow of an ideal gas past a finite wedge if the hypothesis is made that the first singularity on this streamline, along the sloping edge, corresponds to the shoulder of the wedge. For a given wedge, with gradually increasing velocity at infinity upstream, the singularity appears at first at subsonic velocity. Beyond a certain critical velocity at infinity the singularity is always associated with the speed of sound. The hypothesis thus implies that put forward by Maccoll(9) and supported by Busemann(l). A qualitative examination shows that the solution reproduces experimentally known features of the flow of compressible fluid past a finite wedge.

scholarly journals 2.2.4 Lunar Soil Movement Registered by the Apollo 17 Cosmic Dust Experiment

1976 ◽  
Vol 31 ◽  
pp. 233-237 ◽  
Author(s):  
Otto E. Berg ◽  
Henry Wolf ◽  
John Rhee
Keyword(s):  
Lunar Surface ◽  
Lunar Soil ◽  
Cosmic Dust ◽  
Dust Particles ◽  
The Moon ◽  
Normal Impact ◽  
Soil Movement ◽  
Impact Parameters

In December, 1973, a Lunar Ejecta and Meteorites (LEAM) experiment was placed in the Taurus-Littrow area of the moon by the Apollo 17 Astronauts. Objectives of the experiment were centered around measurements of impact parameters of cosmic dust on the lunar surface. During preliminary attempts to analyze the data it became evident that the events registered by the sensors could not be attributed to cosmic dust but could only be identified with the lunar surface and the local sun angle. The nature of these data coupled with post-flight studies of instrument characteristics, have led to a conclusion that the LEAM experiment is responding primarily to a flux of highly charged, slowly moving lunar surface fines. Undoubtedly concealed in these data is the normal impact activity from cosmic dust and probably lunar ejecta, as well. This paper is based on the recognition that the bulk of events registered by the LEAM experiment are not signatures of hypervelocity cosmic dust particles, as expected, but are induced signatures of electrostatically charged and transported lunar fines.

scholarly journals Three-dimensional oblique water-entry problems at small deadrise angles

2012 ◽  
Vol 711 ◽  
pp. 259-280 ◽  
Author(s):  
M. R. Moore ◽  
S. D. Howison ◽  
J. R. Ockendon ◽  
J. M. Oliver
Keyword(s):  
Three Dimensional ◽  
Oblique Impact ◽  
Water Entry ◽  
Rigid Bodies ◽  
Normal Impact ◽  
Displacement Potential ◽  
Pressure Profiles ◽  
The Relationship ◽  
Wagner Theory ◽  
The Ideal

AbstractThis paper extends Wagner theory for the ideal, incompressible normal impact of rigid bodies that are nearly parallel to the surface of a liquid half-space. The impactors considered are three-dimensional and have an oblique impact velocity. A formulation in terms of the displacement potential is used to reveal the relationship between the oblique and corresponding normal impact solutions. In the case of axisymmetric impactors, several geometries are considered in which singularities develop in the boundary of the effective wetted region. We present the corresponding pressure profiles and models for the splash sheets.

Computations of Flow Field around an Object Decelerating from Supersonic to Subsonic Velocity

2012 ◽  
pp. 211-216
Author(s):  
T. Saito ◽  
K. Hatanaka ◽  
H. Yamashita ◽  
T. Ogawa ◽  
S. Obayashi ◽  
...  
Keyword(s):  
Flow Field ◽  
Subsonic Velocity

KETAHANAN BALISTIK LEMBARAN BAJA PADA BERBAGAI SUDUT TEMBAK

ROTASI ◽  
2014 ◽  
Vol 16 (1) ◽  
pp. 34
Author(s):  
Rusnaldy Rusnaldy ◽  
Ismoyo Haryanto ◽  
Norman Iskandar ◽  
Binar Ade Anugra ◽  
Ahmad Zaedun
Keyword(s):  
Mild Steel ◽  
Steel Plate ◽  
Angle Of Attack ◽  
Oblique Impact ◽  
Experimental Results ◽  
Normal Impact ◽  
Impact Angles

Results of study on the performance of 0.4 mm mild steel plate when impacted by 4.5 mm diameter steel ogive-shaped projectile at 45o, 60o (oblique impact) and 90 o (normal impact) angles of attack are presented. The projectiles were fired at highest velocity using air riffle gun. The target-holding fixture was located at a distance of 2 m from the gun. Experimental results show that steel plate provides protection at 45o and 60o obliquity, but fails to provide protection at angle of attack of 90o (normal impact)

Simulation of the normal impact of randomly shaped quasi-spherical particles

2014 ◽  
Vol 16 (3) ◽  
pp. 339-347 ◽  
Author(s):  
Rimantas Kačianauskas ◽  
Liudas Tumonis ◽  
Algis Džiugys
Keyword(s):  
Spherical Particles ◽  
Normal Impact
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