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Model Forum / General / Rockets / January 2004Records for coldest launch?
Well, here at Saskatoon our overnight low temperature was -45 degrees Celsius (*9/5 + 32 gives -49 degrees Fahrenheit) with a wind chill of -56C (-68.8F) which has me thinking about rocket launch records... What are the coldest recorded rocket launches for hobby rocketry and for professional rocketry? Just pondering silly launch ideas... Dwayne > Well, here at Saskatoon our overnight low temperature was -45 degrees > Celsius (*9/5 + 32 gives -49 degrees Fahrenheit) with a wind chill of > -56C (-68.8F) which has me thinking about rocket launch records... > > What are the coldest recorded rocket launches for hobby rocketry and for > professional rocketry? I know our motors were flown at Adak Alaska (in the Aleutians) but not what conditions. I am willing to declare your temp a record. IF you can get a motor to ignite :) > Just pondering silly launch ideas... > > Dwayne  SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. Produce then publish. http://www.usrockets.com My articles valuable? Donate http://tinyurl.com/2hmgv Hi Jerry, Adak, Alaska sounds interesting! So interesting, I had to look it up. They look like they are almost exactly centered between Russia and Canada. It actually has a moderate climate that's shifted down a bit in temperature. Their record high is about 24C (75F) and their record low is about -16C (3F). (What else does one do while waiting for logic to compile :-) ) Looks pretty remote! I wonder if they have any problems with evil regulatory agencies. Anyhow, I'll bring some rocketry gear along with me to work tomorrow. If I get a chance, I'll try a chilly launch. If I don't the window of opportunity has probably closed... it'll be getting cloudy and, therefore, warmer. Dwayne > Hi Jerry, > [quoted text clipped - 8 lines] > Looks pretty remote! I wonder if they have any problems with evil > regulatory agencies. It is RUN by one. DoD. As differentiated from Do0d :) > Anyhow, I'll bring some rocketry gear along with me to work tomorrow. > If I get a chance, I'll try a chilly launch. If I don't the window of > opportunity has probably closed... it'll be getting cloudy and, > therefore, warmer. > > Dwayne Is there anywhere USR motors have NOT been flown over the years? :) SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. Produce then publish. http://www.usrockets.com My articles valuable? Donate http://tinyurl.com/2hmgv > Well, here at Saskatoon our overnight low temperature was -45 degrees > Celsius (*9/5 + 32 gives -49 degrees Fahrenheit) with a wind chill of [quoted text clipped - 4 lines] > > Just pondering silly launch ideas... Move to Mars, the daytime highs are much higher than this :-) Our local group, the Ottawa Rocketry Group, used to regularly launch when it was -30C with a slight breeze taking the wind chill down to about -35 to -40C. On those days, launch rates are low, parachutes don't like to open, and you actually *want* your rocket to veer off course, forcing a long and invigorating walk :-) The flights don't go quite as high, both due to higher air density, and poorer-performing propellants (BP is noticably more sluggish at -30C!). Since having a flotilla of kids (at least two of whom I'm obligated to take with me to launches), I've avoided the really cold launches... >Our local group, the Ottawa Rocketry Group, used to regularly launch > when it was -30C with a slight breeze taking the wind chill down [quoted text clipped - 5 lines] > flotilla of kids (at least two of whom I'm obligated to take with > me to launches), I've avoided the really cold launches... We've had some launches this winter in temps down to the low 60s, some guys even had to put on jackets... ;) Jim Rutkowski Executive Chef - TrailerTrashAerospace www.trailertrashaerospace.com << We've had some launches this winter in temps down to the low 60s, some guys even had to put on jackets... ;) >> LOL! Thank God for deserts! > << We've had some launches this winter in temps down to the low 60s, some guys > even had to put on jackets... ;) >> > > LOL! Thank God for deserts! And you thought cold was 35 degrees F :) SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. Produce then publish. http://www.usrockets.com My articles valuable? Donate http://tinyurl.com/2hmgv Wow, -30C! The Ottawa Rocketry Group must have been really gung ho! We've just started a group, the Saskatoon Rocketry Society, and scheduled a cold weather launch in November that wound up at around -17C with some problematic wind. We're a pretty wussy bunch, so far. I hope we get as enthused as ORG evidently has been. At -17C, all of the 'chutes stayed balled up except my daughter's... that one hung up on a power line :-( I hadn't noticed a performance reduction at that temperature. Your observation of BP performance at -30C is most interesting... and very tempting to check out (alone, I guess :-)) Dwayne ------------------------------- <snip> > Move to Mars, the daytime highs are much higher than this :-) > [quoted text clipped - 7 lines] > flotilla of kids (at least two of whom I'm obligated to take with > me to launches), I've avoided the really cold launches... << Our local group, the Ottawa Rocketry Group, used to regularly launch when it was -30C with a slight breeze taking the wind chill down to about -35 to -40C. Don't take this the wrong way, but man you guys up the Great White North are nuts! ;) > << Our local group, the Ottawa Rocketry Group, used to regularly launch when it > was -30C with a slight breeze taking the wind chill down to about -35 to -40C. > > Don't take this the wrong way, but man you guys up the Great White North are > nuts! ;) And your point is? :-) :-) Actually, I'm not even a "native" Canadian--I'm from Englands sunny south originally. But my body has long forgotten those warm sea breezes... I travel frequently for my day job. I'm always amused to find out what people in other parts of the world consider "bitterly cold". With the exception of the people of Sweden and Norway, the rest of the world are wussies...:-) In North Carolina, for example, a recent light snow fall (a few inches) was enough to cause the state to go into a complete panic. Temperatures plummetted to about -2C or so, forcing the closure of shopping malls and schools. Hundreds of accidents on the highways. I scratch my head in dumbfounded amazement! > In North Carolina, for example, a recent > light snow fall (a few inches) was enough to cause the state to go > into a complete panic. Temperatures plummetted to about -2C or so, > forcing the closure of shopping malls and schools. Hundreds of > accidents on the highways. I scratch my head in dumbfounded amazement! For North Carolina, read England yesterday... http://news.bbc.co.uk/1/hi/uk/3440449.stm G. SignatureGraham Platt UKRA #1264 L2 RSO graham (a) bowhunter (d) demon (d) co (d) uk > > << Our local group, the Ottawa Rocketry Group, used to regularly launch when it > > was -30C with a slight breeze taking the wind chill down to about -35 to -40C. [quoted text clipped - 15 lines] > forcing the closure of shopping malls and schools. Hundreds of > accidents on the highways. I scratch my head in dumbfounded amazement! That's nothing. Here in S.E. Alabama everything closes down if one inch of snow falls. Everyone needs to build a snowman once in their life...........even if it is only six inches tall :-) We are looking at highs temperatures in the 50's for our next launch in February. Neener neener neener! John SignatureJohn Stein KC4RLL NAR 74335 Sr L2 http://www.sears572.com to reply...alaweb is not mine, so remove my. hey! I resemble that remark... ;) I did a quick proto-type launch the other day. The temps here at the time (New Hampshire) were about -20F with a slight wind. wind chill was about -35 - -40F brisk :) heck, I may have to bring the grill in pretty soon! jim > << Our local group, the Ottawa Rocketry Group, used to regularly launch when it > was -30C with a slight breeze taking the wind chill down to about -35 to -40C. > > Don't take this the wrong way, but man you guys up the Great White North are > nuts! ;) > Our local group, the Ottawa Rocketry Group, used to regularly launch > when it was -30C with a slight breeze taking the wind chill down [quoted text clipped - 5 lines] > flotilla of kids (at least two of whom I'm obligated to take with > me to launches), I've avoided the really cold launches... I've flown with ORG before, and I have to say they really know how to put on a good winter launch. I remember on day where I thought that I should start packing snow shoes in with my rocket gear. Those drifts were soft and deep. In contrast, my club here in Michigan have a hard time flying in winter. Shawn Switenky > Well, here at Saskatoon our overnight low temperature was -45 degrees > Celsius (*9/5 + 32 gives -49 degrees Fahrenheit) with a wind chill of > -56C (-68.8F) which has me thinking about rocket launch records... Damn, I though it was cold here (Calgary). He had -55 wind-chill at one point this week, but I think the lowest "real" temperature it got was -35 or so. My coldest launch was at -30 three Febuaries ago. Had a bad case of cabin fever, an estes bull pup, and a C6-5. Long story short - I got frost bite on my fingers from hooking up the ignitor, the engine almost didn't light (low power from cold batteries?), and I lost the rocket. Apparently flying a white rocket when there is a couple of feet of new snow is a bad idea :-[ Bryan coldest it ever gets in taipei is around 10c... but we dont have any rockets except those thing you put in a bottle and light them up. humidity is like 200% or something, kinda like Miami (and just as hot too) >coldest it ever gets in taipei is around 10c... but we dont have any rockets >except those thing you put in a bottle and light them up. humidity is like >200% or something, kinda like Miami (and just as hot too) Why mess around with bottle rockets Tai, when you can just blow up a sperm whale? http://www.etaiwannews.com/Taiwan/2004/01/27/1075168255.htm Boy, I'd like to see a video clip of that! <vbg> tah -- Tod A. Hilty Hilty Information Systems Do not look in the direction of the flash... Curl up in a ball as you hit the ground... Please replace weinerboy dot org with adelphia dot net for reply. I hear the ATF had a hand in that. The truck was a rental too. :-p >>coldest it ever gets in taipei is around 10c... but we dont have any rockets >>except those thing you put in a bottle and light them up. humidity is like [quoted text clipped - 20 lines] > > Please replace weinerboy dot org with adelphia dot net for reply. SignatureAlex Mericas >I hear the ATF had a hand in that. The truck was a rental too. :-p Wonder where they were at when these "highly skilled professionals" attempted their unique method of "Explosively Induced Whale Mass Reduction"? http://perp.com/whale/video.html <vbg> tah -- Tod A. Hilty Hilty Information Systems Do not look in the direction of the flash... Curl up in a ball as you hit the ground... Please replace weinerboy dot org with adelphia dot net for reply. > Well, here at Saskatoon our overnight low temperature was -45 degrees > Celsius (*9/5 + 32 gives -49 degrees Fahrenheit) with a wind chill of [quoted text clipped - 6 lines] > > Dwayne Dwayne, my second flight of a model rocket, ever, was on a cold January day in 1980. It was in front of my 5th grade class at Queen Elizabeth Elementary School. It was only about 90 miles north of you. It would have easily been -40 (celsius and fahrenheit.) The flight was perfect. Model rocket technology has a mil-spec temperature rating :) I know lots of folks flew in that sort of weather so while I think you are in the right area for the launch, there's got to be alot of record holders near you :) Shawn Switenky |
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