Data on Shape and Location of Detached Shock Waves on Cones and Spheres


Book Description

Accurate experimental data are given on the shape and the location of detached shock waves on cones and spheres at Mach numbers from 1.17 to 1.81. The data are correlated to obtain equations that describe the shock waves. This knowledge of the shock waves should be useful in calculations of the pressure distribution and the pressure drag of the fore part of cones and spheres. The experimental data on shock waves are compared with theory.










Handbook of Inviscid Sphere-cone Flow Fields and Pressure Distributions


Book Description

This report contains numerical tables of aerodynamic coefficients and surface pressure distributions for sphere cone configurations as a function of angle of attack and Mach number. These results were generated by an NSWC/WOL computer code based on a finite difference solution of the steady inviscide three-dimensional compressible flow equation for a perfect gas [upsilon]= 1.4. Cone half angles of 50, 60, 80, 90, 100, 150 and 200 are considered. Truncated values are obtained at axial stations to a length of 200 times the sphere radius, over a Mach number range of 3.5, 5, 10, 20, 25 and 30, for an angle-of-attack span of 10, 30, 50, and 100. Center-of-pressure location, and axial- and normal-force coefficients are tabularly presented at each axial-length increment station. Surface pressure distributions are also presented at each axial-length increment station, including seven meridian plane angles over the half plane from windward to leeward ray. The techniques utilized in generating the tables are described, and comparisons between computed values and values measured in some wind-tunnel experiments are presented. The presentation format is discussed to establish the mechanics necessary to use the tables. The tables are divided into two volumes; the first containing pressure information, and the second, aerodynamic information.







Aerodynamic Characteristics of Towed Spheres, Conical Rings, and Cones Used as Decelerators at Mach Numbers from 1.57 to 4.65


Book Description

An investigation was made to determine the drag and stability characteristics of the various decelerators when towed in the wake of several space-vehicle configurations at Mach numbers from 1.57 to 4.65. The following parameters were varied: Reynolds number, trailling distance, ratio of deceleration base diameter to space-vehicle base diameter, cone angle, and size of disk added to the base of a cone.