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Blue Ninja with "Stretch" Modification by JST Rocksim Design File

• Manufacturer: Estes

Comments: Used Rocksim file prepared by GA Dean as basis for this file. Changed nose cone to Sears-Haack type, which more accurately reflects the part than "parabolic" from the original file. Used original engine tube from Estes kit, but changed placement of thrust ring to accomodate "E" engines.

We really enjoyed our original Blue Ninja kit, so decided to make this modified version of it. Although this is a much larger rocket, it performs similarly to the original Blue Ninja on a D12-5 Estes standard engine. But with the modified engine mount, it takes an E9-6 which will send it over 1,100 feet and give you a perfect at-apogee recovery deployment.

Build it and enjoy it.

Designer: Estes (Kit #1300). Modified by Jarrett Gorin and Spencer Clark.

Download mods_stretched_blue_ninja.rkt

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

Kit Name: Estes - Stretched Blue Ninja {Modification}

CG: 28.0075 inches from front
CP: 41.1623 inches from front
Margin: 8.04 Overstable

Parts Breakdown

• Estes Blue Ninja with "Stretch" Nose Cone
• 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: 18.00 in]
• Estes Rip stop nylon Parachute (18.00 in)
• Custom Mass Object
• 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: 0.25 in]
• Custom Ring
• Custom 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: 18.00 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: 3.25 in]
• Custom Ring
• Estes Blue Ninja with "Stretch" Freeform Fin Set
• Custom Mass Object
• Custom 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: 4.00 in]
• Custom 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: 0.75 in]

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