1 2/10/2005thrust chamber assembly concept design review manufacturing josh revenaugh
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2/10/2005 Thrust Chamber Assembly Concept Design Review
2
Material Selection
• Copper Injector (c101)
• High resistance to particle impact
• High Lox pressure rating (8000 psi)
2/10/2005 Thrust Chamber Assembly Concept Design Review
26
Engine Masses
Part weight (lb)
Lox Dome 7.40
Deflector 0.17
Lox Plate 3.00
Injector 7.00
Chamber 22.80
Nozzle 22.20
Total 62.57
2/10/2005 Thrust Chamber Assembly Concept Design Review
27
Brazing
• Silver is used as the braze alloy (BAG-8)
• Braze temperature 1500 deg F
• A few hours in the oven
2/10/2005 Thrust Chamber Assembly Concept Design Review
28
TimelinePart Process
days → 1 2 3 4 5 6 7 8 9
10
11
12
13
14
15
16
17
Lox Dome
shipping
manufacturing
Deflector
shipping
manufacturing
brazing
Lox Plate
shipping
manufacturing
brazing
Injector
shipping
manufacturing
brazing
Chamber
shipping
manufacturing
Nozzle
shipping
manufacturing
2/10/2005 Thrust Chamber Assembly Concept Design Review
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Price List – Materials
Description Material price
Lox Dome 2" x7 1/2" OD c101 370.30
Deflector 2" x 2" OD c101 51.48
Lox Plate 1/4" x 7 1/2" OD c101 90.34
Injector 3/4" x 7 1/2" OD c101 169.60
Flange 1/2" x 7 1/2" OD carbon steel 38.69
Chamber 40-5 black pipe (21ft) carbon steel 266.85
Nozzle Extension 4 1/4" x 8 1/4" OD carbon steel 109.42
Nozzle Throat 5" x 6" OD carbon steel 38.44
Total 1135.12
2/10/2005 Thrust Chamber Assembly Concept Design Review
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Price List – Manufacturing
Description quantity price Total Cost
Drill Bit #68 (.0310") 20 1.84 36.80
Drill Bit #48 (.0760") 10 3.83 38.30
Drill Bit 5/64" (.0781") 10 2.85 28.50
Drill Bit #47 (.0785") 10 2.72 27.20
Total 130.80
2/10/2005 Thrust Chamber Assembly Concept Design Review
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Price List – Parts
Description quantity price Total Cost
Bolts 1/4-20, 2-1/2" Grade 8 (25) 1 9.28 9.28
Nuts 1/4-20, ASTM Standards (25) 1 9.87 9.87
Washers 1/4" SAE Standards (50) 1 5.01 5.01
Gasket Graphite 1/16" thick 24"x24" 1 40.53 40.53
O-ring 339 Teflon, 3-1/4 ID 1 21.89 21.89
Total 86.58