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Original publisher: [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; [Hanover, Md. : Available from the NASA Center for Aerospace Information, 2003] OCLC Number: (OCoLC)56838529 Excerpt: ... R Z l + R Z 2 = P41 FX RZ3 + RZ4 ( 33 ) Pus1 Fx = Similarly, the and calibrations will produce the coefficients and for FY FZ [ SI-', q 3 CQ and for ~ j 3 [ Uj-I. and the coefficients MY THE EQUATIONS FOR THE CALIBRATION The coefficients for the moment calibrations are determined in a similar fashion as the pure force calibrations, except there is an extra term due to the fact that an offset vertical force is used to produce the moment. For the calibration, the pitching moments are MY applied through two separate loadings. Forces are first applied through the stepper motors in line with the forward vertical load cells, and The procedure then repeated CZ1 CZ2. is CZ3 CZ4. with the aft vertical load cells, and The coefficients computed separately are for each loading, and then averaged in the final result. For both cases, the non-zero components ( 22 ) of [ Fm ] FZ MY. are and Therefore, equation becomes: Writing out each of the individual equations, discarding the zero terms, and solving for ~ j 4, ( 34 ) equation becomes: = Lp FZ FZ R X 2 p13 RX1 + p14 + * p23FZ RYl +, u ~ ~ L, FZ = = 3 ( 36 ) P24 FZ--, u33 = FZ p34LFpZ RY2 + = 3 ( 37 ) 14 i NASA / TM-303-212326.../ Derivation of the data reduction equations for the calibration of the six-component thrust stand in the CE-22 advanced nozzle test facility / Component Stands
Derivation of the data reduction equations for the calibration of the six-component thrust stand in the CE-22 advanced nozzle test facility
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