AERONAUTICS , REPORTS AND MEMORANDA , No . 637 . THE ECONOMICAL CONDITIONS FOR LONG FLIGHT

Reports and Memoranda

Some Measurements in Channels of of Shock-wave Attenuation Various Cross-Sections

Reports and Memoranda No. 332±* t February, z96z Summary. Apparatus is described for the measurement of shock attenuation.in channels of several configurations. A circular-bore channel, a square-bore channel and converging and diverging channels have been investigated. Measurements of hot-flow duration and wall pressure variations in the shock tube have also been made. It is concluded that conv...

PressureFluctuations near a Cold, Small-Scale Air Jet (Measurement of Space Correlations)

Reports and Memoranda No. 3~62 May, z958 Summary. This report gives details of experimental observations on a 2-in. model jet. The observations consist of velocity distributions, root-mean-square pressure fluctuations in the field round the jet and space correlations of the fluctuating pressures in limited regions near to the jet. It is considered that the main interest lies in the space correl...

MINISTRY OF TECHNOLOGY AERONAUTICAL RESEARCH COUNCIL REPORTS AND MEMORANDA The Structure and Behaviour of Laminar Separation Bubbles

A study has been made of laminar separation bubbles formed over a wide range of Reynolds numbers and in a variety of pressure distributions. The structure of the bubble depended on the value of the Reynolds number of the separating boundary layer and a parameter based on the pressure rise over the region occupied by the bubble. Conditions for the bursting of 'short' bubbles were determined by a...

Scientific Publications by the Isvr

Technical Reports are published to promote timely dissemination of research results by ISVR personnel. This medium permits more detailed presentation than is usually acceptable for scientific journals. Responsibility for both the content and any opinions expressed rests entirely with the author(s). Technical Memoranda are produced to enable the early or preliminary release of information by ISV...