Accession Number : AD0474410


Title :   MEASUREMENT OF NONAXIAL FORCES PRODUCED BY SOLID-PROPELLANT ROCKET MOTORS USING A SPIN TECHNIQUE


Descriptive Note : Technical rept.


Corporate Author : ARO INC ARNOLD AFS TN


Personal Author(s) : Nelius, M A ; Harris, J E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/474410.pdf


Report Date : Nov 1965


Pagination or Media Count : 49


Abstract : This report introduces a technique for measurement of nonaxial forces produced by solid-propellant rocket motors which is independent of thrust stand interactions and motor weight variations. The technique consists of measuring the axial and two horizontal transverse forces (three components) while spinning the motor about its axial centerline. The accuracy of radial force measurement using the spin technique was established from a dynamic transverse force calibration which was accomplished in the presence of a 4800-lbf thrust- simulating axial load. It was determined that radial forces having magnitudes less than 10 lbf could be determined within 0.5 lbf and that radial forces greater than 10 lbf could be determined within 5 % at rotational speeds up to 250 rpm. The principle of the technique, its limitations, and advantages are discussed. Details of the dynamic transverse force calibrations and test results of nonaxial force measurements during motor firings are also presented.


Descriptors :   *SOLID PROPELLANT ROCKET ENGINES , CALIBRATION , CAPTIVE TESTS , FORCE(MECHANICS) , MEASUREMENT , TEST EQUIPMENT , TEST METHODS , THRUST , WEIGHT


Subject Categories : Test Facilities, Equipment and Methods
      Solid Propellant Rocket Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE