http://groups.yahoo.com/group/water-rockets/ Water Rockets Sat, 04 May 2013 23:42:08 GMT naumann2000 http://groups.yahoo.com/group/water-rockets/message/11352 http://groups.yahoo.com/group/water-rockets/message/11352 Dear friends, i just wanted to present my current activities: - building a new parachute system - launching even higher - optimizing aerodynamics - optimizing Fri, 29 Mar 2013 16:11:35 GMT dk54321 http://groups.yahoo.com/group/water-rockets/message/11351 http://groups.yahoo.com/group/water-rockets/message/11351 ... The Hawkeye uses UV LEDs. It turns out the UV background level of the entire sky is higher than that of the ground, even on cloudy days, so the sensor does Thu, 28 Mar 2013 13:05:03 GMT George http://groups.yahoo.com/group/water-rockets/message/11350 http://groups.yahoo.com/group/water-rockets/message/11350 Hi guys, a couple of weeks ago we finally decided to try one of these challenges ourselves. We had a go at the materials challenge. The challenge was to make a Thu, 28 Mar 2013 12:55:42 GMT George http://groups.yahoo.com/group/water-rockets/message/11349 http://groups.yahoo.com/group/water-rockets/message/11349 I don't envy you the cold weather and snow. I guess it does give you more build time though. :) It's one of the nice things about launching in Sydney where Wed, 27 Mar 2013 16:03:09 GMT dk54321 http://groups.yahoo.com/group/water-rockets/message/11348 http://groups.yahoo.com/group/water-rockets/message/11348 Very Impressive, George! We have six months a year with temperatures below freezing at night, and 3-4 months when they are usually below freezing (sometimes Tue, 26 Mar 2013 18:53:55 GMT Clifford Heath http://groups.yahoo.com/group/water-rockets/message/11347 http://groups.yahoo.com/group/water-rockets/message/11347 ... I've put it back online, without any other changes, because I'm away for a week. Take your best shot, but there may still be problems. Clifford Heath. Tue, 26 Mar 2013 18:49:48 GMT wradoglover http://groups.yahoo.com/group/water-rockets/message/11346 http://groups.yahoo.com/group/water-rockets/message/11346 Hopefully that can be fixed soon. -DogLover Tue, 26 Mar 2013 02:19:46 GMT Robert http://groups.yahoo.com/group/water-rockets/message/11345 http://groups.yahoo.com/group/water-rockets/message/11345 Thanks! I had originally envisioned putting the entire launch rail on hinges so that I could vary the tilt angle but ultimately decided I just wasn't going to Tue, 26 Mar 2013 01:55:27 GMT George http://groups.yahoo.com/group/water-rockets/message/11344 http://groups.yahoo.com/group/water-rockets/message/11344 That must be such a pain to have to deal with snow and water rockets. How much time do you loose each year due to the snow? What rocket did you fly your Tue, 26 Mar 2013 01:31:01 GMT George http://groups.yahoo.com/group/water-rockets/message/11343 http://groups.yahoo.com/group/water-rockets/message/11343 Oh No!! It's such a useful tool, we use it all the time. :( I hope it becomes available again soon Clifford. - George Tue, 26 Mar 2013 01:27:45 GMT George http://groups.yahoo.com/group/water-rockets/message/11342 http://groups.yahoo.com/group/water-rockets/message/11342 Hi bugwubber, That's a pretty neat looking launcher. :) I like the fact you can make it go horizontal. Is it possible to tilt it at an angle as well for Mon, 25 Mar 2013 17:37:21 GMT dk54321 http://groups.yahoo.com/group/water-rockets/message/11341 http://groups.yahoo.com/group/water-rockets/message/11341 The principle is described here, along with a detailed description of one rocketeer's build: http://users.skynet.be/willaert/WR/optogee.htm Another rocketeer Mon, 25 Mar 2013 06:02:28 GMT Robert http://groups.yahoo.com/group/water-rockets/message/11340 http://groups.yahoo.com/group/water-rockets/message/11340 Just uploaded a photo album- Bugwubber's Water Rocket Derby Launcher. Planning on sending a lot of rockets skyward this year. How does an optical apogee Sun, 24 Mar 2013 03:43:23 GMT dk54321 http://groups.yahoo.com/group/water-rockets/message/11339 http://groups.yahoo.com/group/water-rockets/message/11339 According to the calendar, spring has come to the northern hemisphere. We still have snow on the ground in Wisconsin, but I did make it to a high power launch Sun, 17 Mar 2013 23:15:02 GMT Clifford Heath http://groups.yahoo.com/group/water-rockets/message/11338 http://groups.yahoo.com/group/water-rockets/message/11338 Sorry folk - the simulation is offline. The shared server it's on is overloaded and so the wrapper script is timing out. I'm not sure what I can do about that