A load cell for grain-propelled ballistic rocket thrust measurement
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Data
2005-12-01
Autores
De Lucena, Samuel E. [UNESP]
De Aquino, Marcelo G. S.
Caporalli-Filho, Angelo [UNESP]
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Resumo
A 1000-kgf resistive strain-gauge load cell has been developed for quality testing of rocket propellant grain. A 7075-T6 aluminum alloy has been used for the elastic column, in which 8 uniaxial, 120-Ω strain gauges have been bonded and connected to form a full Wheatstone bridge to detect the strain. The chosen geometry makes the transducer insensitive to moments and, also, to the temperature. Experimental tests using a universal testing machine to imposed compression force to the load cell have demonstrated that its behavior is linear, with sensitivity of 2.90 μV/kgf ± 0.34%, and negligible hysteresis. The designed force transducer response to a dynamic test has been comparable to that of a commercial load cell. © 2005 IEEE.
Descrição
Palavras-chave
Force measurement, Force transducer, Load cells, Load measurement, Rockets, Strain gauge, Thrust measurement, Force transducers, Universal testing machine, Aluminum alloys, Hysteresis, Military rockets, Propellants, Strain gages, Structural loads
Como citar
Conference Record - IEEE Instrumentation and Measurement Technology Conference, v. 3, p. 1767-1772.