!  File:  4783C.PROP
!  Database:  PEPDB
!  Date:  23-FEB-1994:03:18:04

coverpage:

  title_1:         DF-224 VERSION 8.3 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 8.3 has been defined to include
    line_2:        the recentering algorithms.  It is designed to
    line_3:        improve the loss of lock performance during
    line_4:        fine lock observations.

!
! end of abstract

general_form_proposers:

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

!

  lname:           ANDERSON
    fname:         GREG
    inst:          J&T/440.8
    country:       USA
    esa:           X

!

  lname:           JACOBSEN
    fname:         BILL
    inst:          LMSC/441
    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:        8.3 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:        Establish and verify initial S/C configuration.
    line_3:        Load flight code changes, dump and verify, and
    line_4:        install.  Vehicle attitude:  RA 261D, DEC 32D
    line_8:        vehicle configuration:  DF 224 8.1.2 NSSC1 4.0.A and PDB
    line_9:        29.A must be the configuratin prior to installation of
    line_11:       DF 224 8.3.  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.

!

  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: 2 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 the following seq
    line_17:       1)  CT Observation that includes a crossover of an
    line_18:       occultation boundary;  2)  FL Acq that includes a cross
    line_19:       over of an occultation boundary.  3)  FL Reacq that also
    line_20:       includes a crossover of an occultation boundary.
    line_21:       4)  Type 2 Slew to the +V3 sunpoint attitude.  5)  FL Obs
    line_22:       w/ occult boundary crossover 6)  FL Reacq... 7) FL Reacq
    line_23:       Vehicle attitude: +V3 Sunpoint RA 8D DEC 25D

!

  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,  and
    line_4:        32K FN and PN.  SSAF comcons will be requested 2 per
    line_5:        orbit 15-20 mins each in SMS.  All eng data will be
    line_6:        recorded in R/T or on ETR.
    line_8:        Time Required: 6 Orbits
    line_11:       CONTIGENCY REMOVAL
    line_16:       Time Required: 2 Orbits

!

  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:        10 Orbits is requested to begin on or about 004/1100.
    line_2:        The use of this time is described as follows:
    line_3:        Day ORBIT Content
    line_4:        ORBIT  Description
    line_5:        1      Establish and verify initial S/C configuration,
    line_6:        load flight code changes.
    line_7:        2      Dump and verify code changes and install, Enable
    line_8:        recentering capability and verify
    line_9:        3      CT Acq w/ crossover of occultation boundary
    line_10:       4      FL Acq w/ crossover of occultation boundary
    line_11:       Use new GS Pair to get a new Pointing
    line_12:       5      FL Reacq w/ crossover of occultation boundary
    line_13:       6      Type 2 Slew to +V3 Sunpoint, FL Observations
    line_14:       7      FL Reacq w/ crossover of occultation boundary
    line_15:       8      FL Reqcq w/ crossover of occultation boundary
    line_16:       9      Contingency Removal of Code
    line_17:       10     Contingency Dump & Verify

!

  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)  Enable Recentering Algorithms
    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:        TG1
    descr_1:       TARGET 1
    pos_1:         RA = 261.0D  +/- .1",
    pos_2:         DEC = 32.0D +/- .01"
    equinox:       1993

!

    targnum:       2
    name_1:        V3SUNPOINT
    descr_1:       PLUS V3 TO SUNPOINT
    pos_1:         RA = 8.0D  +/- .1",
    pos_2:         DEC = 25.0D +/- .01"
    equinox:       1993

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       2.000
    targname:      TG1
    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 / 2-23;
    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:      TG1
    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:      TG1
    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:      TG1
    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
    comment_4:     DUMP AND VERIFY

!

    linenum:       6.000
    targname:      TG1
    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:         SEQ 6-8 NO GAP;
    req_4:         PCS MODE C;
    comment_1:     CT OBS W/ CROSSOVER OF
    comment_2:     OCCULTATION BOUNDARY (ORBIT 3)

!

    linenum:       8.000
    targname:      TG1
    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_4:         PCS MODE F;
    comment_1:     FL OBS W/ CROSSOVER OF
    comment_2:     OCCULTATION BOUNDARY (ORBIT 4)
    comment_3:     USE DIFFERENT GS PAIR FROM CT
    comment_4:     TO PROVIDE ANOTHER POINTING

!

    linenum:       10.000
    targname:      TG1
    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:         SEQ 10-12 NO GAP;
    req_4:         PCS MODE F;
    comment_1:     FL REACQ W/ CROSSOVER OF
    comment_2:     OCCULTATION BOUNDARY (ORBIT 5)

!

    linenum:       12.000
    targname:      V3SUNPOINT
    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_4:         PCS MODE F;
    comment_1:     TYPE 2 SLEW FL ACQ W/ CROSSOVER
    comment_2:     OF OCCULTATION BOUNDARY ORBIT 6

!

    linenum:       14.000
    targname:      V3SUNPOINT
    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:         SEQ 14-16 NO GAP;
    req_4:         PCS MODE F;
    comment_1:     FL REACQ W/ CROSSOVER OF
    comment_2:     OCCULTATION BOUNDARY ORBIT 7

!

    linenum:       16.000
    targname:      V3SUNPOINT
    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_4:         PCS MODE F;
    comment_1:     FL REACQ W/ CROSSOVER OF
    comment_2:     OCCULTATION BOUNDARY ORBIT 8

!

    linenum:       20.000
    targname:      V3SUNPOINT
    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 20-21 NO GAP
    comment_1:     CONTINGENCY ORBIT 9
    comment_2:     20 MINUTE COMCON

!

    linenum:       21.000
    targname:      V3SUNPOINT
    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 ORBIT 9
    comment_2:     20 MINUTE COMCON

!

    linenum:       22.000
    targname:      V3SUNPOINT
    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 22-23 NO GAP
    comment_1:     CONTINGENCY ORBIT 10
    comment_2:     20 MINUTE COMCON

!

    linenum:       23.000
    targname:      V3SUNPOINT
    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:         PCS MODE F;
    comment_1:     CONTINGENCY ORBIT 10
    comment_2:     20 MINUTE COMCON

!
! end of exposure logsheet

! No scan data records found