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CraterMaker Rocksim Design File

• Manufacturer: Scratch

Comments: Mass adjustments for most parts based on actual weights. Fin material changed from ply to paper to match actual weights Slight overall mass adj (approx 1oz); slight overall cg adj (approx .5in) Paint not accounted for; nor forward rail button, nor epoxy on forward bulkhead. Rocket splits at nose Note to self: before re-design, mass was 101.125 with CG @ 36.125 from nose.

Designer: Geof Givens

Download scratch_cratermaker.rkt

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

Kit Name: Scratch - CraterMaker {Scratch}

CG: 31.0000 inches from front
CP: 42.3511 inches from front
Margin: 3.63 Overstable

Parts Breakdown

• CraterMaker Ogive Nose Cone
• Custom 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: 50.50 in]
• CraterMaker Freeform Fin Set Freeform Fin Set
• Public Missiles CR-3.0-1.1 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: 12.00 in]
• Public Missiles CR-3.0-1.1 Ring
• Giant Leap BH-3.00 Ring
• Giant Leap BH-3.00 Ring
• Custom Ring
• Semroc Ring
• Custom Mass Object
• LOC Precision SCTN-20 Tubular Nylon 9/16 In x 20 Ft Mass Object
• Public Missiles Rip stop nylon Parachute (75.00 in)
• Custom Ring

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