 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] M. BEIMS           ]    PASS PROGRAM NOTE        ]       107772     ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] LSIS/282-7533      ]      RELEASE NOTE( )        ]       04/21/95   ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] OI-22 AND SUBS                ]  CREW (X)  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )]  G1, G2, G3, G6, G8, G9         ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA: IMU                                              ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: V4.9A, 4.38, 4.208                             ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ]              TRANSIENT IMU RESOLVER LIMIT BITE                      ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] DURING PERFECT PITCH MANEUVERS, WHEN THE PITCH GIMBAL IS DRIVEN     ]
 ] PAST 90 OR 270 DEGREES, THE OUTER ROLL AND AZIMUTH GIMBALS CAN      ]
 ] PERFORM A HIGH RATE GIMBAL FLIP CAUSING THE RESOLVER LIMIT BITE AND ]
 ] THE IMU FAILURE INDICATORS TO BE SET FOR 960 MSEC, TEMPORARILY      ]
 ] DRIVING BITE INDICATIONS ON DISPLAYS, GAX AND IN THE DOWNLIST.      ]
 ]                                                                     ]
 ] THERE ARE NO SIGNIFICANT FLIGHT PERFORMANCE EFFECTS, AND THE        ]
 ] CHANCES OF SEEING THIS IN FLIGHT ARE VERY LOW.  THE ONLY KNOWN      ]
 ] OCCURRENCES OF THIS TRANSIENT BITE INDICATION HAVE COME DURING      ]
 ] GROUND CALIBRATIONS (E.G. HANGAR CAL A OF THE HAINS IMU DURING THE  ]
 ] POSITION 12 TO 13 PLATFORM SLEW).                                   ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] IGNORE TRANSIENT IMU RESOLVER LIMIT BITE INDICATIONS THAT OCCUR     ]
 ] WHEN THE PITCH GIMBAL IS CLOSE TO 90 OR 270 DEGREES.                ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LSIS:   JEAN L. ZOPHY     DATE 05/09/95]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:   ERIC C. BINGHAM    DATE 05/09/95]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 05/11/95 ]
 ]PF MGR:  OANH N. PHAM     DATE 05/11/95]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
 @
