Author(s): John E. Ekelund SIS EAE-008, Revision A MARS OBSERVER MANEUVER PERFORMANCE FILE Software Interface Specification 12 MARCH 1991 ABSTRACT: The Maneuver Performance Data File is created by the Spacecraft Team. It is used by MOPS, within NAV. The file contains current spacecraft total mass properties, thruster geometry and performance. Jet Propulsion Laboratory California Institute of Technology Pasadena, California 91109
DISTRIBUTION LIST DOCUMENT CHANGE LOG Change Date Affected Portions Letter Original 11/27/90 All Rev. A 3/12/91 Appendix A added. List of TBD Items Page Resolution Date Item
SFOC0038-01-09-01 1 May 90 SFOC-1-CDB-ANY-CATALOGUE2 SFOC0099-01-00 13 Jun 90 Data Dictionary SFOC0038-00-08-01 26 Feb 88 SFOC-1-CDB-MGN-TIMESFILE SFOC0038-01-09-03 6 Feb 90 SFOC-2-SYS-ANY-TIMEFORMS 1 Jul 90 DPTRAJ-ODP User Reference Manual, SOM Vol. 1 and Vol. 2 1 Jul 90 DPTRAJ and ODP Interfaces and File Format Descriptions, SOM, Vol. 3
CCSD3ZS00001AAAAAAAA NJPL3KS0L015BBBBBBBB <CR><LF> MISSION_NAME=MARS_OBSERVER;<CR><LF> SPACECRAFT_NAME=MARS_OBSERVER1;<CR><LF> DATA_SET_ID=MANEUVER_PERF;<CR><LF> FILE_NAME=perf.ssf;<CR><LF> PRODUCER_ID=MO_SCT;<CR><LF> APPLICABLE_START_TIME=1990-06-06T00:00:00;<CR><LF> APPLICABLE_STOP_TIME=1990-07-02T00:00:00;<CR><LF> PRODUCT_CREATION_TIME=1990-06-06T15:00:00;<CR><LF> CCSD3RE00000BBBBBBBB NJPL3IS00251CCCCCCCCIn the actual Maneuver Performance File, the following SFDU data is located at the end of the file, following the non-SFDU data which is described in Section 4.2.2.
CCSD3RE00000CCCCCCCC CCSD3RE00000AAAAAAAA
Length meters Force Newtons Mass kilograms Moments and products of inertia kilogram-meter^2 Time Seconds
LINE COLUMN FORMAT DESCRIPTION ------------------------------------------------------------- 1 1 CHAR*12 `S/C' 1 13 CHAR*36 S/C ID number (`TBD' for MGN), Text identifying spacecrat 2 1 CHAR*12 `PREP' 2 13 CHAR*26 Name and extension of the analyst who generated this file 3 1 CHAR*12 `CREATION' 3 13 CHAR*8 Creation date of this file 3 25 CHAR*8 Creation time of this file 4 1 CHAR*12 `VALID' 4 13 CHAR*8 Beginning valid date of this file 4 25 CHAR*8 Ending valid date of this fileSince the format of the header is fixed, there is no need for an "end-of-header" indicator.
ITEM TYPE UNITS DESCRIPTION ------------------------------------------------------------ MSC R kg Spacecraft total mass 2 IISC R(3,3) kg-m Spacecraft products and moments of inertia w.r.t. the spacecraft coordinates translated to spacecraft c.m. CMSC R(3) meters Spacecraft center of mass w.r.t. Spacecraft body coordinates. FVEC R(3,25) --- Effective thrust direction unit vectors w.r.t. Spacecraft body coordinates. FMAG R(25) Newton Effective thrust magnitude. RF RF(3,25) meters Thruster location w.r.t. Spacecraft body coordinates. FLORAT R(25) kg/sec Propellant effective flow rate.NOTE: Products of Inertia
I_xy = + (xy)dm, I_yz = + (yz)dm, I_zx = + (zx)dm I_xx = + (y^2 + z^2)dm, I_yy = + (x^2 + z^2)dm, I_zz = + (y^2 + x^2)dmThe moment of inertia matrix is then given by:
| I_xx -I_xy -I_xz | | | I = | -I_xy I_yy -I_yz | | | | -I_xz -I_yz I_zz |
CCSD3ZS00001AAAAAAAANJPL3KS0L015BBBBBBBB MISSION_NAME=MARS_OBSERVER; SPACECRAFT_NAME=MARS_OBSERVER1; DATA_SET_ID=MANEUVER_PERF; FILE_NAME=perf.ssf; PRODUCER_ID=MO_SCT; APPLICABLE_START_TIME=1990-06-06T00:00:00; APPLICABLE_STOP_TIME=1990-07-02T00:00:00; PRODUCT_CREATION_TIME=1990-06-06T15:00:00; CCSD3RE00000BBBBBBBBNJPL3IS00251CCCCCCCC S/C MO PREP T Bell, X7-6204/6395 CREATION 06-06-90 15:00:00 VALID 06-06-90 07-02-90 MSC= 2415.000 IISC= 1.6500000e+03,-3.0000000e+00, 2.6000000e+01 -3.0000000e+00, 2.2000000e+03,-3.0000000e+00 2.6000000e+01,-3.0000000e+00, 1.4380000e+03 CMSC= 0.0000000e+00, 0.0000000e+00, 3.5400000e-01 FVEC= 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 0.0000000e+00, 0.0000000e+00, 1.0000000e+00 -9.0600000e-01, 3.4900000e-01, 2.3800000e-01 -9.0600000e-01,-3.4900000e-01, 2.3800000e-01 -9.0600000e-01,-3.4900000e-01,-2.3800000e-01 -9.0600000e-01, 3.4900000e-01,-2.3800000e-01 9.0600000e-01,-3.4900000e-01, 2.3800000e-01 9.0600000e-01,-3.4900000e-01,-2.3800000e-01 9.0600000e-01, 3.4900000e-01,-2.3800000e-01 9.0600000e-01, 3.4900000e-01, 2.3800000e-01 -5.7400000e-01, 0.0000000e+00,-8.1900000e-01 5.7400000e-01, 0.0000000e+00, 8.1900000e-01 -5.7400000e-01, 0.0000000e+00, 8.1900000e-01 5.7400000e-01, 0.0000000e+00,-8.1900000e-01 FMAG= 4.6964034e+02, 4.9000000e+02, 4.6964034e+02, 4.9000000e+02 2.2000000e+01, 2.2000000e+01, 2.2000000e+01, 2.2000000e+01 4.4500000e+00, 4.4500000e+00, 4.4500000e+00, 4.4500000e+00 4.4500000e+00, 4.4500000e+00, 4.4500000e+00, 4.4500000e+00 9.0000000e-01, 9.0000000e-01, 9.0000000e-01, 9.0000000e-01 RF=-9.4000000e-01, 4.0600000e-01, 1.2400000e-02 -9.4000000e-01,-4.0600000e-01, 1.2400000e-02 9.4000000e-01,-4.0600000e-01, 1.2400000e-02 9.4000000e-01, 4.0600000e-01, 1.2400000e-02 -1.1176000e+00,-7.0490000e-01, 3.1800000e-02 1.1176000e+00,-7.0490000e-01, 3.1800000e-02 1.1176000e+00, 7.0490000e-01, 3.1800000e-02 -1.1176000e+00, 7.0490000e-01, 3.1800000e-02 1.1880000e+00, 6.6700000e-01, 1.4670000e+00 1.1880000e+00,-6.0980000e-01, 1.4670000e+00 1.1880000e+00,-6.0980000e-01, 5.9700000e-01 1.1880000e+00, 6.6700000e-01, 5.9700000e-01 -1.1880000e+00,-6.0980000e-01, 1.4670000e+00 -1.1880000e+00,-6.0980000e-01, 5.9700000e-01 -1.1880000e+00, 6.6700000e-01, 5.9700000e-01 -1.1880000e+00, 6.6700000e-01, 1.4670000e+00 1.1100000e+00,-7.2390000e-01, 6.7400000e-01 -1.1100000e+00,-7.2390000e-01, 1.3630000e+00 1.1100000e+00,-7.2390000e-01, 1.3630000e+00 -1.1100000e+00,-7.2390000e-01, 6.7400000e-01 FLORAT= 1.5712107e-01, 1.6280000e-01, 1.5712107e-01, 1.6280000e-01 7.8240000e-03, 7.8240000e-03, 7.8240000e-03, 7.8240000e-03 2.0500000e-03, 2.0500000e-03, 2.0500000e-03, 2.0500000e-03 2.0500000e-03, 2.0500000e-03, 2.0500000e-03, 2.0500000e-03 4.1500000e-04, 4.1500000e-04, 4.1500000e-04, 4.1500000e-04 CCSD3RE00000BBBBBBBBNJPL3IS00251CCCCCCCC
Revision date: 15 April 1996
For information about this on-line document, contact Vic Legerton For information about the file described by this document, contact John Ekelund