Title :
Development of a dual strain gage balance system for measuring light loads
Author :
Roberts, Paul W.
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
Abstract :
A strain gage balance force measurement system is described which was designed to meet light load requirements for an airfoil model tested in NASA Langley´s low-turbulence pressure tunnel (LTPT). This system was developed to obtain direct force data needed to verify calculated pressure to force correlations used in previous aerodynamic tests. The three-component force measurement system was designed so that the strain gage balances would simultaneously support and measure the following loads: weight of the airfoil (approximately 3.0 lbf); 8.0 lb f of lift; 0.5 lbf of drag; and 16.0 in. lbf of pitching moment. In addition to these design loads, the system was required to withstand 100% overload on all three components. The system comprises an airfoil, two strain gaged balances, a thermal flexure, and a mounting plate. Installation of the system in the LTPT is also discussed
Keywords :
balances; calibration; force measurement; strain gauges; wind tunnels; NASA; aerodynamic tests; aerospace test facilities; airfoil model; calibration; dual strain gage balance; force data; force measurement; low-turbulence pressure tunnel; mounting plate; thermal flexure; wind tunnel; Aerodynamics; Automotive components; Bars; Capacitive sensors; Drag; Force measurement; NASA; Strain measurement; System testing; Thermal expansion;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1989. ICIASF '89 Record., International Congress on
Conference_Location :
Gottingen
DOI :
10.1109/ICIASF.1989.77697
