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Centuri Hummingbird Boost Glider simulation
Attached is a simulation I made for the Centuri Hummingbird Boost Glider, Centuri Catalog Number KF-2. You will also need to down load and install the attached dart motor file to get the simulations to run properly.
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Bruce S. Levison, NAR #69055 Last edited by teflonrocketry1 : 04-08-2018 at 08:53 PM. |
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Attached is a picture of this kit that I recently built.
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Bruce S. Levison, NAR #69055 |
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I've downloaded this one at several times over the past twenty years, but I never got around to building one. It would fit in nicely with my current fleet of "gliders".
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Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Mini Aero-Dart, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Unflown: F-22 Air Superiority Fighter, Jayhawk, Multi-Roc, Solar Sailer II, Microsonde 3 Payloader, Aerobee 300, Cyber III, Scrambler |
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I used a technique I have been experimenting with to construct the fiberboard parts for the Hummingbird. I glued two sheets of poster board and a printout of all the parts on high quality bond paper together using a spray adhesive. I cut out the parts from this 3 ply stack. I used rubber cement thinner (heptane) to clean up any glue overspray. I think the technique worked out nicely for this model. In my hands, the spray adhesive seems to work better than sticker paper for fastening the artwork to the 2 ply's of poster board.
I also built a Centuri X-24 Bug (see attached picture) but I haven't yet figured out how to get the Rocksim program to provide an acceptable simulation. For the X-24 simulation, I have been trying to simulate the flight as a boosted dart (like I did for the Centuri Hummingbird) so I can account for the motor ejection. That is not the problem; it seems Rocksim distorts the fins when I try to put them on a conical transition. Everything works fine when I simulate the model using a regular body tube.
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Bruce S. Levison, NAR #69055 |
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Jerry,
Wow, thanks, I didn't know about these software packages! I typically use RockSim, Open Rocket and VCP. I also have some old CFD programs from Aerorocket that I occasionally use when I want to look at rocket's coefficient of drag. Can these software packages handle odd-ball designs like tube fins, ring fins, square body tubes and unsymmetrical fin designs?
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Bruce S. Levison, NAR #69055 |
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