Adrian

We’re up to about almost foot of snow down here in Highlands Ranch so far. I assume the snow will have to melt off of the road to the pad, among other things, for the November launch to happen?

Yeah, it’s the Google calendar that says Atlas site.Roger that on the waiver. In that case I’ll be flying the I600 (I still owe the pot $20), the I216, or maybe both if the first recovery goes well.

OK, i get that the balloons are sampling pressure at various altitueds. How is the altitude of the balloon when the pressure is sampled determined?GPS or radio location. The other NCR Ken works for the company that makes those now,…   Read more»

I just took a quick look at today’s balloon sounding data for Denver and Grand Junction, and the 5 points I looked throughout the air column at had between 0 and 1.4% difference.Temperature, dew point, and wind direction vary more…   Read more»

We could go on for a while on this topic, but it should probably be moved to its own thread.In the meantime, my position is that it’s possible to use a test chamber to evaluate how accurately an altimeter measures…   Read more»

Word is TRA records committee will not be accepting any altitude records over 25K without GPS including the full raw stream data capture. Baro or Accel derieved altitudes will not be accepted.WarrenThat’s true now (though I think the cutoff is…   Read more»

US Balance US-MAGNUM-1000XR 1000 g x 0.1g Digital Pocket Jewelry Gram ScaleI bought it from a seller listed on Amazon for about $25.00 delivered. It measures in grams, ounces, grains, etc.Easy to read, but has a short on time.It has…   Read more»

On top of the plateau due West from the launch site there are some undulating little valleys that like to hide rockets. Did your search cover that area?

For those of you playing with your own altimeters and flight computers, I came across a VERY interesting altimeter chip today.http://www.intersema.ch/products/guide/calibrated/ms5561c/SPI interface, 16bit, 10-1100 mBar, individually calibrated, integral temperature sensor for compensation.WarrenGood taste in sensors, Warren.That sensor in a…[Read more]

Congratulations, and nice job on recognizing those who helped you. Wish I had been there.

I think I figured out why my drogue descent rate was 180fps – I was looking over the data, and the charges weren’t nearly as energetic as normal. My apogee separation was somewhat delayed, and only reached a peak of…   Read more»

I landed 7.28 miles from the flight line. Never once lost signal. It was about 2 inches from where the GPS said it was 8) I’d never have looked within 4 miles of where I landed had I been using…   Read more»

Pro 29//pro38.com/pdfs/Pro29_dimensions.pdfPro 38//pro38.com/pdfs/Pro38_dimensions.pdfetc.

Keep in mind there will be very little pressure acting on the surgical tubing to cause an increased burn rate. You would probably have to add in a catalyst to the pyro to get the burn rate up. Or stick…   Read more»

Adrian,so you leave any air space in there? When I run out of the little plastic cups I have, I want to try this method.I didn’t think Pyrodex burned fast enough?????When Pyrodex is sufficiently contained, it pops with a nice,…   Read more»

I use the 1/4″ launch lugs from Apogee for my charges. I make a 5-minute epoxy puddle on a piece of plastic, fold the wires of an ignitor 90 degrees and set the wires into the puddle with the head…   Read more»

About a year ago I got some thick-walled tubing from McMaster and the ID was too small to get enough powder in there. Then a few days ago I bought some tubingg that Home Depot sells, thinner-walled stuff that has…   Read more»

This unit is an altimeter only. No ability to set off anything.Who makes a good accelerometer based altimeter/charge capable unit?

(Raises hand) 😀

How about how many motors you’re buying vs. how many you’re burning. Darn you BATFE, for losing the case and letting me take motors home!

Rather than a call in, I wonder what CTI’s 29mm 3 grain G106 skidmark would look like at night?Hmm. I’m not an expert at the legalities, but I think it’s still classified a high power motor. I have read that…   Read more»