Igniter. Ignition System ........................... 2-8 Preburners ............................... 2-8 Main Injectol ............................. 2-9 Main Combustion Chamber.

TABLE 4-11.— ORBITER RADIOFREQUENCY SYSTEMS AND DATA NETWORK TORS TRACKING DATA RELAY SATELLITE (TORS) e TRANSMIT: COMMANDS OR DIGITAL VOICE AND COMMANDS TELEMETRY * RECEIVE: TELEMETRY AND DIGITAL VOICE e RADAR TRACKING TELEMETRY VOICE ONE-WAY DOPPLER EXTRACTION S-BAND * PM DOWNLINK (192 kbps ) VOICE (2 x 32 kbps) COMMANDS 6.4 kbps (2 kbps INFORMATION.