Accession Number : AD0453130


Title :   A LOW-LOAD THREE-COMPONENT FORCE BALANCE FOR MEASUREMENTS IN A LOW-DENSITY WIND TUNNEL


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN


Personal Author(s) : ARNEY, Jr , George D ; Harter, Wade T


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/453130.pdf


Report Date : Dec 1964


Pagination or Media Count : 30


Abstract : This paper describes a three-component force balance which has been developed for measurement of lift, drag, and pitching moment acting on models in a low-density, hypervelocity wind tunnel. Although designed for a particular wind tunnel, the general arrangement and the principles involved should be applicable to similar situations. The balance is of the external type operating on the nulling principle. Nulling of each component is accomplished automatically through the use of closed loop control systems. Calibration data and sample wind tunnel measurements are presented which demonstrate that the balance is suitable for the intended application.


Descriptors :   *HYPERSONIC WIND TUNNELS , *MEASURING INSTRUMENTS , AERODYNAMICS , BALANCES , CALIBRATION , DRAG , FORCE(MECHANICS) , LIFT , MOMENTS


Subject Categories : Test Facilities, Equipment and Methods


Distribution Statement : APPROVED FOR PUBLIC RELEASE