srb return to flight activities - nasa · pdf filesolid rocket booster (srb) attach point...
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Solid Rocket Booster (SRB) Attach Point
Forward Booster
Separation Motors (BSMs)
Aft BSMs
SRB/External Tank Forward
Interface
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BOLT CATCHER ASSEMBLY
External Tank
SRB
SRB ET
ET/SRB Forward Attach Area
ETSRB
Bolt Catcher
Separation Plane
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Pressure Cartridge
NASA Standard Initiator
(NSI)
Forward Separation Bolt
Pressure Cartridge Body O-ring
NSI O-ring
NASA STANDARD INITIATOR PRESSURE CARTRIDGE
Solid Rocket Booster (SRB) Attach Point
Forward Booster
Separation Motors (BSMs)
Aft BSMs
SRB/External Tank Forward
Interface
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Igniter Case
Igniter Propellant Grain
Igniter Adapter
Igniter Retainer
Igniter RodBKNO3 bags
BSM Cross-section
BSM Igniter Cross-section
Propellant
Liner
Case
Exit Cone
Graphite throat
Closure
Igniter
BOOSTER SEPARATION MOTOR IGNITER
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BSM Igniter Pressure Data vs. Time
0
500
1000
1500
2000
2500
0.0000 0.0200 0.0400 0.0600 0.0800 0.1000 0.1200 0.1400 0.1600 0.1800 0.2000Time (s)
Pres
sure
(psia
)
BSM8368BSM8251BSM8367
Nominal Pressure TraceErratic Pressure Traces
BSM IGNITER ERRATIC PRESSURE ISSUE