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James Hartsfield November 23, 1993

Release No. 93-089


Flight control for STS-61, the 5th voyage of Endeavour, will follow the procedures and traditions common to U.S. manned space flights since 1965, when the Mission Control Center was first used.

Responsibility for conducting Shuttle operations will revert to the Mission Control Center (MCC) in Houston once Endeavour's two solid rocket boosters ignite. Mission support in the MCC will begin five hours prior to launch and continue through landing.

The primary objective of STS-61 is the first on-orbit servicing of the Hubble Space Telescope. The mission will include a rendezvous with HST, the capture of the telescope with Endeavour's mechanical arm, five planned spacewalks to perform servicing tasks, and the the subsequent redeploy of HST.

Orbiter operations will be conducted from Flight Control Room One (FCR-1) on the second floor of the MCC, located in Bldg. 30 at the Johnson Space Center. Voice communications with the orbiter will be as standard from the MCC only with the call signs "Houston" and "Endeavour" used. The teams of MCC flight controllers will alternate shifts in the control center and in nearby analysis and support facilities. The handover between each team takes about an hour and allows each flight controller to brief his or her replacement on developments during the previous two shifts.

The flight control teams for this mission will be referred to as the Ascent/Entry, Orbit 1, Orbit 2, Planning and Team 4 teams. The Ascent and Entry teams will be led by Flight Director Rich Jackson. The Orbit 1 shift will be conducted by Flight Director Bob Castle. The Orbit 2 team will be directed by Lead Flight Director for STS-61 Milt Heflin, who will have primary responsibility for the HST servicing activities. Assisting Heflin on the Orbit 2 shift will be Flight Director Jeff Bantle, who will have primary responsibilities for the orbiter's systems. The Planning Team will be led by Flight Director John Muratore. Flight Control Team 4, a team that will serve to provide some members of the first three flight control teams with a brief break as the planned 11-day mission nears its end, is a partial team active in only a few controller positions.



The flight control positions in the MCC, and their responsibilities, are:

Flight Director (FLIGHT)

Has overall responsibility for the conduct of the mission.

Spacecraft Communicator (CAPCOM)

By tradition an astronaut; responsible for all voice contact with the flight crew.

Flight Activities Officer (FAO)

Responsible for procedures and crew timelines; provides expertise on flight documentation and checklists; prepares messages and maintains all teleprinter and/or Text and Graphics System traffic to the vehicle.

Integrated Communications Officer (INCO)

Responsible for all Orbiter data, voice and video communications systems; monitors the telemetry link between the vehicle and the ground; oversees the uplink command and control processes.

Flight Dynamics Officer (FDO)

Responsible for monitoring vehicle performance during the powered flight phase and assessing abort modes; calculating orbital maneuvers and resulting trajectories; and monitoring vehicle flight profile and energy levels during reentry.

Trajectory Officer (TRAJECTORY)

Also known as "TRAJ," this operator aids the FDO during dynamic flight phases and is responsible for maintaining the trajectory processors in the MCC and for trajectory inputs made to the Mission Operations Computer.

Guidance, Navigation & Control Systems Engineer (GNC)

Responsible for all inertial navigational systems hardware such as star trackers, radar altimeters and the inertial measurement units; monitors radio navigation and digital autopilot hardware systems.

Guidance & Procedures Officer (GPO)

Responsible for the onboard navigation software and for maintenance of the Orbiter's navigation state, known as the state vector. Also responsible for monitoring crew vehicle control during ascent, entry, or rendezvous.

Rendezvous Guidance and Procedures Officer (RENDEZVOUS)

The RENDEZVOUS GPO is specialist who monitors onboard navigation of the Orbiter during rendezvous and proximity operations.

Environmental Engineer & Consumables Manager (EECOM)

Responsible for all life support systems, cabin pressure, thermal control and supply and waste water management; manages consumables such as oxygen and hydrogen.

Electrical Generation and Illumination Officer (EGIL)

Responsible for power management, fuel cell operation, vehicle lighting and the master caution and warning system.

Payloads Officer (PAYLOADS)

Coordinates all payload activities; serves as principal interface with remote payload operations facilities.

Data Processing Systems Engineer (DPS)

Responsible for all onboard mass memory and data processing hardware; monitors primary and backup flight software systems; manages operating routines and multi-computer configurations.

Propulsion Engineer (PROP)

Manages the reaction control and orbital maneuvering thrusters during all phases of flight; monitors fuel usage and storage tank status; calculates optimal sequences for thruster firings.

Booster Systems Engineer (BOOSTER)

Monitors main engine and solid rocket booster performance during ascent phase.

Ground Controller (GC)

Coordinates operation of ground stations and other elements of worldwide space tracking and data network; responsible for MCC computer support and displays.

Maintenance, Mechanical, Arm & Crew Systems (MMACS)

Formerly known as RMU; responsible for remote manipulator system; monitors auxilliary power units and hydraulic systems; manages payload bay and vent door operations.

Extravehicular Activities (EVA)

A specialist responsible for monitoring and coordinating preparations for and execution of space walks. Responsibilities include monitoring suit and EVA hardware performance.

Payload Deployment & Retrieval Systems (PDRS)

A specialist responsible for monitoring and coordinating the operation of the remote manipulator system.

Flight Surgeon (SURGEON)

Monitors health of flight crew; provides procedures and guidance on all health-related matters.

Public Affairs Officer (PAO)

Provides real-time explanation of mission events during all phases of flight.




TEAM 4 (T4)

FLIGHT Rich Jackson Bob Castle Milt Heflin (EVA)

Jeff Bantle (Orbiter)

John Muratore

CAPCOM Ken Cockrell Susan Helms Greg Harbaugh Carl Meade

PAO James Hartsfield (A)

Doug Ward (E)

James Hartsfield Kyle Herring Kari Fluegel

FAO Neil Woodbury Neil Woodbury Mary Anne Plaza Gail Schneider/

Greg Smith (T4)

INCO Chris Counts Harry Black Joseph Fanelli J.E. Conner/

Chris Counts (T4)

FDO Ed Gonzales (A)

Doug Rask (E)

Steve Stich Dick Theis Bill Tracy/

Phil Burley (T4)

TRAJ Matt Abbott Bill Britz Lisa Shore Dan Adamo/

Roger Simpson (T4)

GPO Dennis Bentley (A)

Ken Patterson (E)

Lynda Gavin


William Ober


Mark Thomas


GNC Stan Schaefer Stan Schaefer Leroy Cain David Gruber

EECOM Leonard Riche Leonard Riche Quinn Carelock Dan Molina/

Jimmy Spivey (T4)

EGIL Brian Pawlik Larry Minter Robert Armstrong David Randall/

Jim Azbell (T4)

PAYLOADS Nellie Carr Nellie Carr Jeff Hanley Cheryl Molnar/

Tim Baum (T4)

DPS Terry Keeler Terry Keeler Robert Walton Jeff Wyrick

PROP Carlyle Lowe Carlyle Lowe William Powers Matt Barry/

Chad Clement (T4)

BOOSTER Teri Stowe N/A N/A John Calhoun

GC John Snyder

Ed Klein

John Wells

Joe Aquino

Johnnie Brothers

Al Davis

Frank Stolarski

Henry Allen

MMACS Kevin McCluney Kevin McCluney Jeff Kling Robert Doremus/

Bill Anderson (T4)

EVA Richard Fullerton Richard Fullerton Sue Rainwater Jim Thornton

PDRS N/A David Moyer Albert Lee Gary Pollock

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