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SEMROC Retro-Repro Orion Rocksim Design File

Comments: Working from a V9 simulation started by SEMROC.

Designer: Centuri Engineering (1971) SEMROC Astronautics (2010) BARCLONE Rocketry (2010)

Visit www.semroc.com to download Semroc-Orion.rkt

To use the design file above, you need a copy of Rocksim, a rocket design and simulation program.

CG: 12.1970 inches from front
CP: 17.8175 inches from front
Margin: 8.27 Overstable

Parts Breakdown

• Semroc-Orion.rkt Parabolic Nose Cone
• Custom Conical Transition
• Custom Conical Transition
• Custom Conical Transition
• Semroc SE-12 Screw Eye-Large Mass Object
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 6.00 in]
• Semroc HTC-20 Ring
• Semroc Polyethylene LDPE Parachute (16.00 in)
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 12.00 in]
• SubAssembly
• Semroc Ring
• Semroc Ring
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 3.00 in]
• SEMROC Astronautics TR-7 Ring
• Semroc EH-28 Engine Hook Standard Mass Object
• SEMROC Astronautics CR-713 Ring
• Custom Ring
• Semroc-Orion.rkt Trapezoid Fin S Trapezoid Fin Set
• Semroc-Orion.rkt Trapezoid Fin S Trapezoid Fin Set
• External Pod
• Semroc-Orion.rkt Parabolic Nose Cone
• Custom Conical Transition
• Custom Conical Transition
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 3.00 in]
• Custom Conical Transition
• Custom Conical Transition
• Custom Parabolic Transition
• External Pod
• Semroc-Orion.rkt Parabolic Nose Cone
• Custom Conical Transition
• Custom Conical Transition
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 3.00 in]
• Custom Conical Transition
• Custom Conical Transition
• Custom Parabolic Transition
• External Pod
• Semroc-Orion.rkt Parabolic Nose Cone
• Custom Conical Transition
• Custom Conical Transition
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 3.00 in]
• Custom Conical Transition
• Custom Conical Transition
• Custom Parabolic Transition
• Semroc-Orion.rkt Freeform Fin Set Freeform Fin Set
• External Pod
• Custom Estes BT 1090 1.0173 inches 25.84 mm 0.7250 inches 18.42 mm 0.7250 inches 18.42 mm 0.9500 inches 24.13 mm 0.9500 inches 24.13 mm 0.2400 inches 6.10 mm 0.0000 inches 0.00 mm 1.5950 inches 40.51 mm 2.5550 inches 64.90 mm 1.8000 inches 45.72 mm 1.5200 Body Tube [Length: 2.00 in]
• External Pod
• Semroc Conical Transition

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