Adrian

Mark, Jim's program looks at a batch file that's among the files that are zipped up to see which port to use. You have to modify that to match whatever port number the Parrot gets hooked up to. One ...

I have been using excel 2003 without any trouble so I don't recommend going back to Excel 95. I did take another look at the hyperterminal settings under properties/settings/ASCII setup, and there is...

I haven't run into this myself, but I have heard from other customers that this is a problem with the newest versions of Excel. If you don't have a previous version of Excel available, there are a co...

Thanks, but it doesn't count since part of the rocket wasn't recovered. I'll probably try again for the G record on an Ellis G37 later this year. I'm thinking about going for the G-impulse staged re...

Last fall, Chris LaPanse gave me his last G25 in the hope of helping to set a G world record before the motor contest cert expired. Well, I was too busy crashing and losing F10 rockets to make a rock...

Glass with high-temperature epoxy would do just fine for the fastest, hottest flights. The hobby store fiberglassing epoxy I used on Barack-it got noticably softer around 120 F. Aeropoxy is one of t...

I agree that the epoxy will be the limiting factor for any of these, but wouldn't carbon and glass both be more heat-resistant than Kevlar? Both are refractory materials, particularly carbon-carbon c...

Not sure about the temperature, but keep in mind that it can't be sanded, unless you want your rocket to look like a sweater, that is.

I think I'd use barbecue paint on that bird.... What kind of temperature is the BBQ paint good for? I was thinking of just using cotronics epoxy and thin FG for the finish. No primer to run. I've c...

I don't know about Rocketwhiz, but what I had in mind was just a top speed record, a la Mach Madness at LDRS. Featherweight Altimeters is sponsoring a prize for that, by the way. Integrate data from...

I'm in favor. I have been meaning to bring this up myself but I keep forgetting. But let's not make the mistake that Mach Madness is about to make by paying any attention to baro-based velocity esti...

By the way, I looked back at the data and confirmed that the AGL for John's flight was 24,724 feet, when calculated in the traditional way based on the standard atmosphere.

Bummer if you beat the J record and it happens to land on 20,000 feet and 4800 samples. 😉

OK, more questions from a non-engineer Shocked the blue line seems to be essentially peaking at just below 25K, with some bigger spikes. The 25,724' would seem to be such a spike. Isn't that an anomal...

I put in a small (2 or 5, I don't remember which) degree initial flight angle, mostly because there was some measured drag acceleration at apogee. You can see from the Cd plot that the assumed Cd sho...