THE CERTAIN PECULIARITY OF OVEREXPANSION OF SUPERSONIC FLOW IN A CYLINDRICAL PIPE,
Abstract
The results are given of experiments with supersonic airflow in a cylindrical pipe. The configuration and dimensions (in millimeters) of the pipe are shown: (1) the Laval nozzle; (2) a set of Hg manometers for measuring the static pressure; and (3) the pipe with asbestos insulation. The ultrasonic flow was generated by means of two vacuum pumps operating in parallel. The results of pressure measurements are shown. The distribution of the normalized (reatmospheric) pressure is shown with respect to the pipe length. The lower curve corresponds to the existence of supersonic flow in all parts of the pipe. The other curves correspond to the overexpansion of the flow with 'pseudo-jumps'. The increase in the pressure in the region of 'pseudo-jumps' measured during the experiments exceeded the theoretically predicted values. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 1969
- Accession Number
- AD0700790
Entities
People
- F. F. Tarasov
Organizations
- National Air and Space Intelligence Center