Accession Number : AD0283272

Title :   RESEARCH ON ANNULAR NOZZLE TYPE GROUND EFFECT MACHINE OPERATING OVER WATER DESCRIPTION OF WAKE PATTERNS

Corporate Author : CALIFORNIA UNIV BERKELEY HYDRAULIC ENGINEERING LAB

Personal Author(s) : MOSER,M.

Report Date : MAR 1962

Pagination or Media Count : 1

Abstract : The annular nozzle typ of ground effect machine, op rating over water, has been the object of several years' research at the University of California. One of the characteristics of a ground effect machine is the generation of waves from the depression formed under the nozzle. It became evident during research that a series of wake patterns is formed by these waves. It was, therefore, decided o investigate the wake patterns to determine their general and particular characteristics and to ascertain relationships between the patterns and various combinations of forward speed, weight-rate of discharge from the nozzle, and wave period. The observations also revealed various spray patterns accompanying the wake patterns. The information presented is based on observations of approximately 500 test runs mad with a -60 degree annular nozzle. (Author)

Descriptors :   *FLYING PLATFORMS, *NOZZLES, *WAKE, *WATER WAVES, ANNULAR NOZZLES, DOWNWASH, GROUND EFFECT MACHINES, HYDRODYNAMICS, MODEL TESTS, WATER TANKS

Distribution Statement : APPROVED FOR PUBLIC RELEASE