Systems Data

2.9. 5. 12.4 CM-SM Separation System. Redundant linear - shaped charges are used to cut three tension tie straps which constitute the physical bond of the CM and SM (figure 2.9-30). A detonator is used to explode each linear-shaped charge which is sympathetic to the other. Either of the linear-shaped charges will cut the tension tie strap it is mounted on therefore, the sympathetic nature is not required to meet minimum reliability requirements. The electrical-explosive interface wiring to each...

Initiate Abort Beco

CMDRS EVENT TIMER RESET & STARTED CM-SM UMB DEADFACED CM RCS PRESS. RCS CONTROL TRANS TO CM BATS. TIED TO MAIN DC BUSES CM-SM SEPARATED LE MOTOR IGNITED CM RCS SCS ENABLED CM-SM SEP PYRO CUTOFF CANARDS DEPLOYED ELS ARMED BARO LOCK-IN (ELSC ACT.) CM RCS SCS DISABLED TOWER AND DOCKING RING JETTISONED APEX COVER JETTISONED DROGUE CHUTES DEPLOYED DROGUE CHUTES RELEASED & PILOT CHUTES DEPLOYED BURN RCS PROPELLANTS PURGE CM RCS RELEASE MAIN CHUTES SAFE SECS Figure 2.9-35. Event Profile, Mode IB...

Detonating Cord Explosive Train

Adapter Separation System which, in turn, will energize the latching coils of the RCS ENABLE relays, zone 7-A. This relay logic will enable the controller reaction jet on off assembly which couples the SCS jet selection logic and SM RCS, section 2. 5, RCS. This system is designed for two retractions with backup for each. Since there are four retraction cylinders, however, four retractions are possible under ideal circumstances. The DOCK PROBE RETRACT PRIM and or SEC switches (S2...

Retainer

Each of the drogue parachutes has two reefing lines with two cutters per line to prevent disreefing in case any one reefing line cutter should fail prematurely because a single reefing line cut in one place will disreef a parachute. Each of the three main parachutes has three reefing lines with two cutters per line. The time delay of four of the cutters on each main parachute two lines is 6 seconds. At this time the main parachutes will be allowed to open slightly wider than when deployed. The...