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Brad Morse replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
you might try giving him a call, http://rouse-tech.com/contact.htm
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Well, I still haven’t heard back from Tom Rouse recently. Anyone have a suggestion?
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Thanks for the launch log update, Warren. But another reason for not putting it down as a record is that I didn’t safely recover the rocket, only the nosecone. :(I actually printed out and brought a Tripoli record form with… Read more»
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Warren B. Musselman replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I’m going to put that down in the launch logs… and I’d like to put it down as a new club record and encourage you to submit it to Tripoli… That beat John’s F record hands down and then some…. Read more»
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I filtered the accel data with a simple moving-window average before using it to calculate the Cd. I think you’re right that the lighter rocket and lower altitude would help also.In the analysis I’m also propagating the vertical and horizontal… Read more»
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Chris LaPanse replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Very interesting :)I notice that you got better data at low speed than I did with my Cirrus – likely due to the lighter rocket and lower altitude. Very nice cd though – 0.3 is quite impressive. I hope you… Read more»
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I put in the density calculation into my post-flight analysis, and got the following plot of Cd as a function of velocity:This is the same basic shape of the curve as predicted by Rocksim. Tonight I may try to see… Read more»
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Chris LaPanse replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Well, as far as Cd goes, my Cirrus (which was optimized for super/transsonic speeds) had a supersonic cd of 0.63 or so, and a transsonic cd of 0.70. Subsonic however was in the .4 range. For an optimized subsonic rocket,… Read more»
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Brad Morse replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I agree that you need to stay subsonic, or get (and stay) supersonic for a long, long time. The getting-and-staying supersonic is tough. Not many motors fit that bill.Getting your altimeters sanctioned by TRA would be a terrific thing. Adding… Read more»
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
My first estimate of 0.25 came from the accelerometer measurements during the coast. I went to Rocksim to compare, and Rocksim predicts 0.28 at 500 mph. Then I realized that I assumed a 5400 foot ASL density for the whole… Read more»
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Brad Morse replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Conrats, Adrian – It is a monster boost by any measure!. Sorry (truly!) that it didn’t hang together. Go with Kevlar, ground testing to keep bp to a minimum, and a wee wrap of duct tape where the rub occurs… Read more»
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
Yes, the on-board switch is rated for 4A continuous. But it also depends on what battery you use for the deployment; deployments require a separate battery from the Parrot’s on-board battery. I have been using the same-size (65 mAhr) Li-poly… Read more»
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Warren B. Musselman replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
It has sufficient current to reliably fire e-matches? If so, I’ve got an F32 and a bird to fly it in come the December launch. Will it fit 24mm airframes/noses? I seem to remember it will.Warren
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Adrian replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I assume you’re talking about a 29mm bird flying on an Apogee F10? If so, I have to admit some skepticism about that altitude.While the F10 is nearly a 100% F motor, that altitude is well beyond any current F… Read more»
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Warren B. Musselman replied to the topic "F record attempt: 8400 feet" – 6 years, 10 months ago
I assume you’re talking about a 29mm bird flying on an Apogee F10? If so, I have to admit some skepticism about that altitude.While the F10 is nearly a 100% F motor, that altitude is well beyond any current F… Read more»
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MikeS replied to the topic "38mm Phenolic Liner" – 6 years, 10 months ago
great…thanks
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Conway Stevens replied to the topic "38mm Phenolic Liner" – 6 years, 10 months ago
Mike as just a suggestion be sure to hit several of us up here locally. Especially those of us that do research motors. May have had a spare piece to help a guy out… Just a suggestion buddy..Conway
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Jeffrey Joe Hinton replied to the topic "Nov. 3rd Launch – A Great Day" – 6 years, 10 months ago
We had a total of fifty flights on Saturday – I’ll get launch logs posted some time tomorrow. Saturday evening got dead calm and unfortunately the wind pick up about 4 AM as I was setting back my watch. And… Read more»
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Greg Rapp replied to the topic "Boycott Hobbytown USA" – 6 years, 10 months ago
Thanks To All The Vendors That Show Up At Launches!
DOUBLE WHAT MIKE SAID – YOU GUYS WHO SHOW UP TO THE CLUB LAUNCHES ROCK – AND YOU WILL GET MY BUSINESS!!!!!
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MikeS replied to the topic "Boycott Hobbytown USA" – 6 years, 10 months ago
I spent around $1500.00 this year. Most NOT at HT. When I ran My Wifedown to that area for Scrapbooking stuff. I ran into HT while she was shopping. Always picked up a G something.No More.Plus freight from vendors is… Read more»
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