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Rob Navias February 14, 1995

RELEASE: 95-010

FLIGHT CONTROL OF STS-67

Flight control for STS-67, the eighth flight of Endeavour, the ASTRO-2 mission, will follow the procedures and traditions common to U.S. manned space flights since 1965, when the Mission Control Center (MCC) was first used.

The primary objective of STS-67 is to make precise measurements of astronomical objects such as planets, stars and galaxies using the complement of ASTRO-2 scientific instruments. Operations on board Endeavour will continue around the clock with the astronauts on board working in two 12-hour shifts.

The Space Shuttle orbiter's operations, from launch to landing, 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 use the standard MCC call signs of "Houston" and "Endeavour." ASTRO-2 science operations will be controlled from the Payload Operations Control Center at the Marshall Space Flight Center in Huntsville, Al.

Voice communications originating from the Payload Operations Control Center will use the call signs "ASTRO" and "Huntsville."

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 MCC flight control teams for this mission will be referred to as the Ascent/Entry Team, the Orbit 1 Team, Orbit 2 Team, Orbit 3 and Lead Orbit 4 Team. The Ascent/Entry Team will be led by Flight Director Rich Jackson. The Orbit 1 team will be under the supervision of Flight Director Bryan Austin. The Orbit 2 shift will be conducted by Flight Director Al Pennington. The Orbit 3 shift will be led by Flight Director John Shannon and the Orbit 4 shift will be under the direction of Lead Flight Director Chuck Shaw.

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>MCC POSITIONS AND CALL SIGNS FOR STS-67The 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.

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)

Monitors auxiliary power units and hydraulic systems; manages payload bay and vent door operations; handles in-flight maintenance planning; oversees orbiter structure, tiles, blankets, etc.

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 when applicable.

Payload Deployment & Retrieval Systems (PDRS)

A specialist responsible for monitoring and coordinating the operation of the remote manipulator system when it is carried aboard the Orbiter.

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.

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