!  File:  4219C.PROP
!  Database:  PEPDB
!  Date:  20-FEB-1994:17:57:41

coverpage:

  title_1:         DF-224 VERSION 8.1 FS INSTALLATION
    proposal_for:  ENG/SC
    pi_fname:      LESLYE
    pi_lname:      BOYCE
    pi_inst:       CODE 441
    pi_country:    USA
    num_pri:       1
! end of coverpage

abstract:

    line_1:        DF 224 Version 8.1 has been defined to include
    line_2:        miscellaneous changes requested by the ST ScI
    line_3:        and Mission Operations, such as the modification
    line_4:        to the HGA Control Law to allow commanding
    line_5:        of each gimbal; Observer limit change to allow
    line_6:        guide star acquisition of faint stars, peak-up
    line_7:        validity check, Dahl Friction compensation,
    line_8:        modifications to allow for variable scaling of
    line_9:        the #48 command and other miscellaneous changes.

!
! end of abstract

general_form_proposers:

  lname:           BOYCE
    fname:         LESLYE
    inst:          GFSC/CODE 441
    country:       USA
    esa:           X

!

  lname:           HICKS
    fname:         CHARLIE
    inst:          LMSC/GSFC/CODE 440.8
    country:       USA
    esa:           X

!

  lname:           LOVE
    fname:         JENNIFER
    inst:          GSFC/CODE 512
    country:       USA
    esa:           X

!
! end of general_form_proposers block

general_form_text:

  question:        2
    section:       1
    line_1:        The time allocated will provide the specific
    line_2:        vehicle configuration and dedicated ScT for
    line_3:        installation and regression testing of Version
    line_4:        8.1 FS modifications.  The new flight code once
    line_5:        installed and validated via on-orbit regression
    line_6:        test, will provide new capability.  The specific
    line_7:        HST configuration for installation of this flight
    line_8:        code is needed to configure trhe vehicle, reduce
    line_9:        the CPU processing during installation and perform
    line_10:       regression test.

!

  question:        3
    section:       1
    line_1:        INSTALLATION
    line_2:        Install flight code changes, safemode macros and
    line_3:        recovery load, new telemetry formats and transition
    line_4:        the ground system elements.
    line_6:        vehicle attitude: South Ecliptic Pole (+V3 Sunpoint)
    line_8:        vehicle configuration:  DF 224 8.0 NSSC1 4.0 and PDB
    line_9:        28.B must be the configuratin prior to installation of
    line_11:       DF 224 8.1.  The HST shall be in normal mode using the
    line_12:       gyros for attitude reference.  4 Kbps "AN" format should
    line_13:       be active, with the engineering recorder activities
    line_14:       performed by generic scheduling by PASS.  The following
    line_15:       FSW processing must be disabled prior to installation:
    line_16:       1)  FGS acquistion, ATTITUDE Maps/updates, Command
    line_17:       Packets 33-47 Disabled;
    line_18:       2)  FHST processing should be inactive, command packets
    line_19:       31 & 32.
    line_20:       During orbits 4-6 the HGA control law will be disabled;
    line_21:       therefore the HGA splines will be deleted from the SMS.  A
    line_22:       functional block will be forced at the end of orbit 6 in
    line_23:       order to specify the intercept point of the 1st ephem track.

!

  question:        3
    section:       2
    line_1:        SSAF Comcon requests should be included in the SMS of 15 to
    line_2:        20 minutes duration each for a total of 2 per orbit.  A full
    line_3:        DF 224 memory Dump will follow installation.  All eng data
    line_4:        will be recovered either in R/T or via the ETR.
    line_6:        Time Requirement: 8.5 orbits dedicated
    line_8:        REGRESSION TEST
    line_9:        The regression test activities are defined to be the
    line_11:       minimum activities required to assess the vehicle H&S.
    line_12:       The majority of the regression test items are autonomously
    line_13:       performed by the DF 224 FSW as a result of vehicle
    line_14:       configuration.  The activities have been defined and
    line_15:       success/fail criteria established.  Specific activities
    line_16:       that are to be scheduled via the SMS are a large vehicle
    line_17:       slew to the specified attitude with attendant solar array
    line_18:       slew.  The slew shall be a Type 2.  Following is a Fine
    line_19:       Lock Acq (P format), Coarse Track acq and reacq (A format).
    line_21:       Vehicle attitude: -V1 Sunpoint

!

  question:        3
    section:       3
    line_1:        Vehicle configuration:  4 Kbps AN format should be active
    line_2:        with the ETR activities performed by PASS.  During this
    line_3:        period Operations will be switching between 4K AN, FN and
    line_4:        PN.  SSAF comcons will be requested 2 per orbit 15-20 mins
    line_5:        each in SMS.  All eng data will be recorded in R/T or on
    line_6:        ETR.
    line_8:        Time Required: 1.5 Orbits
    line_11:       CONTIGENCY REMOVAL
    line_12:       No contigency removal time was authorized; however, we
    line_13:       request that a low priority observation follow the
    line_14:       installation, because if problems are encountered, we
    line_15:       may have to interrupt the observation to remove and
    line_16:       restore the DF 224 FSW and ground system.

!

  question:        4
    section:       1
    line_1:        Due to the complexity of this DF-224 FS installation,
    line_2:        dedicated ScT is needed to reduce the CPU processing
    line_3:        and prevent unknown anomalous FSW operation, possibly
    line_4:        causing entry into safemode.  Previously, serendipitous
    line_5:        installations of FSW code have proved to be difficult
    line_6:        when specific vehicle configurations are desired.
    line_7:        Project Office, Code 440 has therefore directed that all
    line_8:        future FSW installations requiring specific vehicle
    line_9:        configurations be submitted through the proposal system.

!

  question:        5
    section:       1
    line_1:        Because of the complexity of the installation, 9 orbits
    line_2:        is requested to begin on or about day 230/1100.  The
    line_3:        use of this time is described as follows:
    line_5:        DAY Orbit Content
    line_6:        230/1100 Flight S/W Installation
    line_7:        1 Install flight Code changes & acq logic change
    line_8:        dump and verify (D&V)
    line_9:        2 Install safemode macros into scratch area, D&V
    line_11:       3 Install new 8.1 safemode macros, load A format,
    line_12:       D&V
    line_13:       4 Position gimbals, Install HGA control law
    line_14:       changes, transition ground elements to PDB 29.A
    line_15:       5-6 HGA Polarity Slews and interception of first
    line_16:       ephemeris track.
    line_17:       7-8.5 Install Telemetry formats P&F, dump & verify
    line_18:       Day 230/2230 Flight S/W Regression Test begins
    line_19:       8.5 Vehicle slew, Fine Lock ACQ (P format),
    line_20:       R/T Analysis
    line_21:       9 Coarse Track (CT) Acq (A format), R/T analysis
    line_22:       and CT re-acq (F format), R/T analysis

!

  question:        6
    section:       1
    line_1:        2 SSAF Comcon requests of 15-20 minutes duration each
    line_2:        for all orbits.  Installation of the FS modifications
    line_3:        will be conducted with the HST in normal mode using
    line_4:        gyros for attitude reference; and specific DF-224
    line_5:        processing disabled (ie FHST, FGS)
    line_7:        The following R/T and merge operations are required to
    line_8:        completed the installation and regression test:
    line_11:       MOC MERGE, R/T Activities
    line_12:       1)  Establish initial configuration by disabling velocity
    line_13:       aberration and parallax processing
    line_14:       2)  Block loading (TMDIAG)
    line_15:       3)  Verification of initial configuration for installation
    line_16:       4)  Memory Dump and analysis
    line_17:       5)  Polarity slews for HGA gimbals
    line_19:       MOC Merge, SPC Activities
    line_20:       1)  Possible edit and/or deletion of FHST updates and maps
    line_21:       2)  Possible edit and/or deletion of splines from SMS
    line_22:       3)  ETR scheduling
    line_23:       4)  Activation and processing of 32 & 4K telemetry

!
!end of general form text

general_form_address:

  lname:           BOYCE
    fname:         LESLYE
    category:      PI
    inst:          CODE 441
    phone:         301 286-8219

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        SEP
    descr_1:       S.ECLIPTIC POLE (NOMINAL) WITH +V3 TO SUN
    pos_1:         RA = 90.0D  +/- .1",
    pos_2:         DEC = -67.0D +/- .01"
    equinox:       1992

!

    targnum:       2
    name_1:        V1SUNPOINT
    descr_1:       MINUS V1 TO SUNPOINT
    pos_1:         RA = 327.0D  +/- .1",
    pos_2:         DEC = -13.0D +/- .01"
    equinox:       1992

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       2.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         CYCLE 2 / 2-27;
    req_4:         SEQ 2-3 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, BEGIN FS CODE
    comment_3:     CHANGES INSTALLATION VIA RTC; ORBIT 1

!

    linenum:       3.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, BEGIN FS CODE
    comment_3:     CHANGES INSTALLATION VIA RTC; ORBIT 1

!

    linenum:       4.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 4-5 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, BEGIN FS CODE
    comment_3:     CHANGES, INSTALLATION VIA RTC; ORBIT 2

!

    linenum:       5.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, BEGIN FS CODE
    comment_3:     CHANGES, INSTALLATION VIA RTC; ORBIT 2

!

    linenum:       6.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 6-7 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, LOAD P FORMAT
    comment_3:     VIA MOC MERGE, BEGIN INSTALLATION OF
    comment_4:     NEW SAFEMODE MACROS, LOAD NEW A
    comment_5:     FORMAT DUMP & VERIFY; ORBIT 3

!

    linenum:       7.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, LOAD P FORMAT
    comment_3:     VIA MOC MERGE, BEGIN INSTALLATION OF
    comment_4:     NEW SAFEMODE MACROS, LOAD NEW A
    comment_5:     FORMAT DUMP & VERIFY; ORBIT 3

!

    linenum:       8.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 8-9 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, SWITCH TO "A"
    comment_3:     FORMAT, POSITION GIMBALS VIA RTC,
    comment_4:     INSTALL NEW HGA CONTROL LAW
    comment_5:     TRANSITION GROUND SYSTEM; ORBIT 4

!

    linenum:       9.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, SWITCH TO "A"
    comment_3:     FORMAT, POSITION GIMBALS VIA RTC,
    comment_4:     INSTALL NEW HGA CONTROL LAW
    comment_5:     TRANSITION GROUND SYSTEM; ORBIT 4

!

    linenum:       10.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 10-11 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, HGA POLARITY
    comment_3:     SLEWS; ORBIT 5

!

    linenum:       11.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, HGA POLARITY
    comment_3:     SLEWS; ORBIT 5

!

    linenum:       12.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 12-13 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, HGA POLARITY
    comment_3:     SLEWS; ORBIT 6

!

    linenum:       13.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, HGA POLARITY
    comment_3:     SLEWS; ORBIT 6

!

    linenum:       14.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 14-15 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, INSTALL NEW
    comment_3:     P&F FORMATS; DUMP AND VERIFY; ORBIT 7

!

    linenum:       15.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, INSTALL NEW
    comment_3:     P&F FORMATS; DUMP AND VERIFY; ORBIT 7

!

    linenum:       16.000
    targname:      SEP
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         SEQ 16-17 NO GAP
    comment_1:     NO FGS, NO FHST MAPS/UPDATES, COMMAND
    comment_2:     PACKETS 31-47 DISABLED, INSTALL NEW
    comment_3:     P&F FORMATS; DUMP AND VERIFY; ORBIT 8

!

    linenum:       17.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=FGS,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         PCS MODE F;
    req_4:         ORIENT 82.97D +/- 0.1D;
    comment_1:     SLEW TO -V1SUNPOINT RA = 327 DEC -13
    comment_2:     ROLL (ORIENTATION) = 82.97, FINE LOCK
    comment_3:     ACQ VIA SPC, LOAD P FORMAT VIA MOC
    comment_4:     MERGE; ORBIT 8;

!

    linenum:       18.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=FGS,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    req_3:         PCS MODE C /18-19;
    req_4:         SEQ 18-19 NO GAP;
    req_5:         SAME ORIENT FOR 18-19 AS 17;
    comment_1:     COARSE TRACK ACQ, LOAD A FORMAT
    comment_2:     VIA MOC MERGE; ORBIT 9;

!

    linenum:       19.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=FGS,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     COURSE TRACK RE-ACQ
    comment_2:     LOAD FORMAT F VIA MOC MERGE
    comment_3:     (ORBIT 9)

!

    linenum:       20.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     CONTINGENCY: NO FGS, NO FHST MAPS
    comment_2:     OR UPDATES COMMAND PACKETS 31-47
    comment_3:     DISABLED, LOAD & INSTALL SAFING
    comment_4:     MACROS INTO SCRATCH
    comment_5:     (ORBIT 10)

!

    linenum:       21.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     PERFORM MEMORY DUMP
    comment_2:     (ORBIT 10)

!

    linenum:       22.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO,
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     SWITCH TO LGA, REMOVE HGA
    comment_2:     CONTROL LAW CHANGES
    comment_3:     (ORBIT 11)

!

    linenum:       23.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     PERFORM MEMORY DUMP
    comment_2:     (ORBIT 11)

!

    linenum:       24.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     LOAD VER. 8.0
    comment_2:     SAFING MACROS
    comment_3:     (ORBIT 12)

!

    linenum:       25.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     SEE ABOVE
    comment_2:     (ORBIT 12)

!

    linenum:       26.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     SWITCH TO P FORMAT
    comment_2:     LOAD VER. 8.0 A FORMAT
    comment_3:     (ORBIT 13)

!

    linenum:       27.000
    targname:      V1SUNPOINT
    config:        S/C
    opmode:        DATA
    aperture:      V1
    num_exp:       1
    time_per_exp:  20M
    fluxnum_1:     1
    priority:      1
    param_1:       CONTROL=GYRO
    req_1:         RT ANALYSIS;
    req_2:         REQ UPLINK;
    comment_1:     INSTALL SAFING MACORS AND
    comment_2:     PERFORM MEMORY DUMP
    comment_3:     (ORBIT 13)

!
! end of exposure logsheet

! No scan data records found