Richard Caldwell: I started this group for the rocket buffs (like me) out there. This can be used to exchange ideas and to help. Primarily this is for birds design with Alibre (and possible use ALGO to strees the airframe). I am talking about high power rocketry, but model... moreI started this group for the rocket buffs (like me) out there. This can be used to exchange ideas and to help. Primarily this is for birds design with Alibre (and possible use ALGO to strees the airframe). I am talking about high power rocketry, but model rockets are also welcome. Also any photos you may have of present or past.
Mark TrevithickNice looking launch. From the mountains in the background I'm guessing that was at Blackrock.
I used to belong to Tripoli Colorado many years ago and haven't built any rockets for years.
At one time I had designs for an I motor record attempt, but withou... moreNice looking launch. From the mountains in the background I'm guessing that was at Blackrock.
I used to belong to Tripoli Colorado many years ago and haven't built any rockets for years.
At one time I had designs for an I motor record attempt, but without software such as Algor, I dropped the project out of concerns the fins would shear on lift off. From 0 to supersonic in less than a second would have been more than the airframe and fins could withstand and safety became the primary concern.
Good looking rockets. less
September 29, 2010
Richard CaldwellYour right just out side the scenic town of Grlock[SP] NV. The bird you see holding was a J100 to K9. We loosed telemetry so we do not know for sure what the Alt. was, but according to the model it should peaked out around 30KF. My old Trip number is 1001... moreYour right just out side the scenic town of Grlock[SP] NV. The bird you see holding was a J100 to K9. We loosed telemetry so we do not know for sure what the Alt. was, but according to the model it should peaked out around 30KF. My old Trip number is 1001, I haved renewed for about 10 years..
What I motor where you going to use and is it a min. diameter bird?
I have found that just good old carbon fiber body and aircraft plywood core fins can hold to lot more than you think. The way I make my fins . I start with a 1/16 aircraft plywood. the I layer on carbon fiber.Each layer is a little larger then the last.. This layering makes a fin that I haven been able to break. I like your idea of using Algor to strees the bird. But I not had much luck with.
I am working on a quad hybrid two stage.I do not know right now what motors I'm going us in the first stage. The second stage is going to a N1000.
I love going high and fast like around mach 3-4. less
September 29, 2010
Mark TrevithickWhat a great number. I think mine was 3330 and also haven't renewed for well over ten years.
The motor by Kosdon was a the only 29 mm I motor series in existance. He has two of them as I recall. I bought the most powerful one; an I-560. 24" aluminum motor... moreWhat a great number. I think mine was 3330 and also haven't renewed for well over ten years.
The motor by Kosdon was a the only 29 mm I motor series in existance. He has two of them as I recall. I bought the most powerful one; an I-560. 24" aluminum motor casing with an exhaust bore of about 0.625" if I remember correctly. It would burn the entire grain in 0.6 seconds. I still have the motore casing and thats about all I still have. I may still have one of Tommy Billingsly's altimeters, but may have thrown out the chutes and drogue I had specifically made for it by Ky Michalson aka Rocketman.
My body tube had an ID of 29 mm and was glass wrapped. My fins were designed after hours of computer modeling and were about 150 % stabilizing at launch velocities, but were quite small. I made them out of 1/16th inch G10. They were only about 2.5" long, 1" wide, and had a triangular shape reminiscent of the Nike series and the razors of some hunting arrows.
I ran the Ham radio relay for LDRS way back when and spent the wee... less
I just wondering what might in the works for the up coming fling season. I presonly am working a 4 stage bird (no details right still in the dream state. May be you all come up with some ideas. Let's see if can Alice her ride to moon.
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