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| Star 48 - Specifications |
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Motor Performance
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STAR
48B -
Short Nozzle PAM STS |
STAR
48B -
Long Nozzle PAM Delta |
| Image: |
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| Propellant Designation |
TP-H-3340 |
TP-H-3340 |
| Propellant Formula: |
AP - 71%
Al - 18%
HTPB Binder - 11% |
AP - 71%
Al - 18%
HTPB Binder - 11% |
| Propellant Configuration: |
Internal-burning, radial-slotted star
with head-end web |
Internal-burning, radial-slotted
star with head-end web |
| Average Thrust (vacuum): |
15,100 lbf
67.17 kN |
15,430 lbf
68.64 kN |
| Chamber Pressure: (Pc) |
579 psia |
579 psia |
| Effective Isp (vacuum): |
286.0 sec |
292.1 sec |
| Burn Time |
84.1 sec |
84.1 sec |
| Total Impulse |
1,275,740 lbf-sec
5674.8 kN-sec |
1,303,705 lbf-sec
5799.2 kN-sec |
| Nozzle Area Ratio: |
34.2 |
47.2 |
| Gimbal Capability: |
None |
None |
| Motor Loaded Mass: |
4705.4 lb2134.3 kg |
4720.8 lb2141.3 kg |
| Maximum Propellant Load |
4431.2 lb2010 kg |
4431.2 lb 2010 kg |
| Motor Burnout Mass: |
245.4 lb111.3 kg |
257.8 lb116.9 kg |
Engine
Size: Length / Width |
72 in / 49 in
182.9 cm / 124.5 cm |
80 in / 49 in
203.2 cm / 124.5 cm |
| Flight Status |
Production |
Production |
| Mission(s): |
PAM STS
(Space Shuttle) |
PAM-Delta
(Delta II third stage) |
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STAR
48A - Short Nozzle |
STAR
48A - Long Nozzle |
| Image: |
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| Propellant Designation |
TP-H-3340 |
TP-H-3340 |
| Propellant Formula: |
AP - 71%
Al - 18%
HTPB Binder - 11% |
AP - 71%
Al - 18%
HTPB Binder - 11% |
| Propellant Configuration: |
Internal-burning, radial-slotted star
with head-end web |
Internal-burning, radial-slotted
star with head-end web |
| Average Thrust (vacuum): |
17,335 lbf
77.11 kN |
17,735 lbf
78.89 kN |
| Chamber Pressure: (Pc) |
543 psia |
543 psia |
| Effective Isp (vacuum): |
283.4 sec |
289.9 sec |
| Burn Time |
87.2 sec |
87.2 sec |
| Total Impulse |
1,528,409 lbf-sec
6798.7 kN-sec |
1,563,767 lbf-sec
6956.0 kN-sec |
| Nozzle Area Ratio: |
27.3 |
37.7 |
| Gimbal Capability: |
None |
None |
| Motor Loaded Mass: |
5673.7 lb
2573.5 kg |
5691.1 lb
2581.4 kg |
| Maximum Propellant Load |
5357.2 lb
2430 kg |
5357.2 lb
2430 kg |
| Motor Burnout Mass: |
280 lb127 kg |
294.3 lb133.5 kg |
Engine Size:
Length / Width |
80 in / 49 in203.2 cm / 124.5 cm |
88 in / 49 in223.5 cm / 124.5 cm |
| Flight Status |
Development |
Development |
| Mission(s): |
TBD |
TBD |
* Engine performance from
Thiokol product data sheet and web page.
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