Accession Number : ADA194231

Title :   Unsteady Water Channel.

Descriptive Note : Final rept. Dec 84-Dec 87,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Ho, Chih-Ming

PDF Url : ADA194231

Report Date : 29 Mar 1988

Pagination or Media Count : 15

Abstract : When an airplane undergoes maneuvering, the motion includes many modes: pitching, plunging, translation, acceleration and deceleration. The aerodynamics of the first three types of motion are well-documented. The effects of acceleration and deceleration on the aerodynamic forces of a wing have not been explored in depth because a specially designed unsteady testing facility is necessary. The present water channel is able to provide a wide variety of free stream conditions. The test section of the water channel measures 18-in. by 18-in. and has a maximum flow rate of 3 ft/sec. In addition, a rotating gate provides programmable unsteady flow velocities.

Descriptors :   *UNSTEADY FLOW, *WATER CHANNEL TEST FACILITIES, ACCELERATION, AERODYNAMIC FORCES, AERODYNAMICS, COMPUTER PROGRAMMING, DECELERATION, FLOW RATE, FREE STREAM, ROTATION, TEST EQUIPMENT, VELOCITY, WINGS, FLIGHT MANEUVERS

Subject Categories : Test Facilities, Equipment and Methods
      Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE