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- Path: sparky!uunet!news.larc.nasa.gov!news.larc.nasa.gov!jason
- From: jason@ab20.larc.nasa.gov (Jason Austin)
- Newsgroups: rec.models.rockets
- Subject: Re: Tracking
- Date: 26 Jan 93 15:25:21
- Organization: NASA Langley Research Center, Hampton, VA
- Lines: 36
- Message-ID: <JASON.93Jan26152521@ab20.larc.nasa.gov>
- References: <1993Jan25.163448.20293@aio.jsc.nasa.gov>
- Reply-To: Jason C. Austin <j.c.austin@larc.nasa.gov>
- NNTP-Posting-Host: ab20.larc.nasa.gov
- In-reply-to: tes@motif.uucp's message of Mon, 25 Jan 1993 16:34:48 GMT
-
- In article <1993Jan25.163448.20293@aio.jsc.nasa.gov> tes@motif.uucp (Thomas E. Smith) writes:
- ->
- -> Something that I didn't see in the FAQ was tips on tracking a medium to high
- -> power rocket once it flies out of visual range. I _had_ a rocket that soared
- -> very nicely up to around 3200ft. It was a windy day, so I put a siren in the
- -> rocket and launched it about 70 degrees from the horizon into the wind. I saw
- -> the chute open :) and proceeded to make a BIG mistake: look down as I walked
- -> towards it. I could have kept track of it if I hadn't taken my eyes off it, so
- -> it was history :( . I spent a couple of hours looking for it. The siren is
- -> probably only audible if you're close enough to see it.
- ->
- -> The question is, is there some type of smoke or colored chalk dust you can
- -> use to make the rocket more visible as it comes down? If so what type of
- -> mechanism (commercial or home-made) do you use to steadily release the smoke or
- -> chalk? And what other methods could be used? This is the main issue keeping me
- -> from tackling high-power rocketry where I plan on breaking 3200 ft.
-
- I once saw a device at a hobby shop to help with this problem.
- You put a small transmitter in the rocket and keep a gun shaped
- detector on the ground. The gun beeps louder depending on how how
- directly you're pointing it at the transmitter. I think that set was
- around $30. I don't remember what kind of range they claimed.
-
- -> BTW, does anyone know the decent rate of a 1lb rocket with an 18" chute? I
- -> guessed that it took about 90 seconds for the rocket to land with the chute.
- -> With about a 25 mph wind that puts the rocket at (25mph * (90s/(3600 sec/hr)))
- -> .625 mi from where I launched it. So that was where I concentrated the search.
- ->
- -> Thanks in advance for any help :)
-
- I believe this will vary greatly depending on the shape of the
- rocket and the parachute.
- --
- Jason C. Austin
- j.c.austin@larc.nasa.gov
-
-