Translational And Rotational Motion Of A Body Entering The Mars Atmosphere

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NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 7echnical Report No, 32-845 Translational and Rotational Motion of a Body Entering the Mars Atmosphere Peter Hans Feitis JET PROPULSION LABORATORY PASADENA, CALIFORNIA CALIFORNIA INSTITUTE OF TECHNOLOGY Hard copy (HC) o;?.Oo Microfiche (MF) *57> ff 853 July 65 December 1, 1965 N ATlON AL AE RON AUT1 CS AN D SPACE A DM IN IST RATION Technical Report No. The virtual displacement components corresponding to the rotational degrees of freedom along the (xB, yB, z,) directions are dP = P dt = d$J (sin (3 sin 4) + d6' cos 4 dQ = Q dt = d$ (sin e cos 4) - dB sin 4 dR = R dt = d$ (cos 0) + d4 (1.7") -b respectively. The virtual work performed by the moment MA during the virtual displacement (dP, dQ, dR) is given by the scalar product dA = MA * (::) = -L C,A p i2 sin 8d8/2 dR (1.8 ') Thus, the generalized forces corresponding to the rotational degrees of freedom are F+ = 0 Fd = 0 F, = -C,A p z2 L sin el2 Substitution into Equations (1.2 ') results in the equations of motion (4.44- 4.46) of Section IV.

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Space Sciences

NASA NTRS Link

https://ntrs.nasa.gov/citations/19660006049