Interactions Between the External Flow and Rocket Exhaust Nozzle
No abstract available
Post University On-the-Job Training for Engineers
Our national need for qualified scientists and engineers is greater now than at any other time in our history. Fortunately, we can point with pride to this need as a measure of the impact of science and technology on our way of life. In effect, we have made such rapid strides In advancing established sciences and in opening new technological fields...
Experimental Study of the Stability of Pipe Flow. II. Development of Disturbance Generator
No abstract available
Dynamics and Control of Flexible Space Vehicles
The purpose of this report is twofold: (1) to survey the established analytic procedures for the simulation of controlled flexible space vehicles, and (2) to develop in detail methods that employ a combination of discrete and distributed ("modal") coordinates, i.e., the hybrid-coordinate methods. Analytic procedures are described in three categorie...
Design and development of a cold air turbine
A high speed drive unit with a continuosly variable speed power characteristics is a necessary tool for testing protype compressors and fans and high speed bearings.Such a drive unit is a special purpose machine and is generally not available in the normal range of compressed air is already available at National Aeronautical Laboratory,it was decid...
Fuel atomization in a flowing airstream (for turbofan engines)
Since in some modern turbofan engines the primary zone velocity is high enough to affect appreciably the mean drop size of fuel injected through a swirl atomizer, an experiment was designed to obtain accurate data on the influence of the velocity of an airstream on the mean drop size and size distribution of fuel drops injected into it. Kerosene fu...
Operational behaviour of a turboprop engine
Problems are encountered in the determination of in-flight power of turboprop engines which are not fitted with a direct torque measuring device. Elaborate investigations were carried out on such an engine to estimate its performance during its service with fleet. The present paper describes the special tests and their results to determine the effe...
Use of B-splines and householder transformations for curve fitting
In this-report we present a FORTRAN IV programme for fitting cubic splines by Least Squares to data given-at arbitrary points. The algorithm used was first given by J.Go Hayes and Jy Halliday [lJ. Representation of cubic spline by means of B-splines and the use of Householder13; transformation in obtaining the least squares solution13; are two of t...
Stress concentration around an elliptic hole in a cylindrical shell under torsion with major axis of the hole perpendicu...
In an earlier[1]2 a theoretical analysis was presented for the stresses around a small elliptic hole in an infinitley long cylindrical shell under torsional loading with the major axis of the hole parallel to the shell axis .In the limiting case the solution reduced to that of an axial crack.The purpose of this Note is to examine axis lying paralle...
A survey of the acoustic features of the auditorium in the Systems building
The auditorium in the System Building, preliminary13; intended for seminars is also used for cultural programmes.13; The acoustics of the auditorium has on occasions presented problem of lack of clarity and inadequate sound level. with a view to isolate the source of these problems of listening, an acoustic survey, four problem of sound level varia...
