Discussion in 'Beginners & Educational Programs' started by jpbell, Jun 9, 2010.
And another seven year old thread gets necroed.
Still running, not so much. How fast can you run, say a mile, in the given terrain? I'd love to be able to do 20 MPH!
20 MPH is NAR safety code standard in which your rocket will not and should not be flown in , if you want to know more about medium to higher powered rockets calculate your mass total then put that against wind resistance ... yeah its a ugly formula
In all instances high wind MPHS are mostly related to Low fronts high fronts or Bad weather, always remember to be logical before flying your rocket that day ... always check weather before you fly any day...
I wake up early in the morning and look out my bedroom window. If the leaves on my tree are still and not moving around from the wind, It's a good time to launch.
Being an old fart who no longer relishes long hikes, or losing rockets to wind drift, I have set the limit at 7mph. I usually consult a fairly accurate wind/weather web site that models ten days out, so I am able to pick days with more ideal flying conditions.
At the launch site, my wind guage of choice is quite simple: I generally stick a short launch rod into the ground with a two foot crepe streamer attached. This is a great indicator for ground wind conditions at the pad. If the streamer is hanging limp or fluttering slightly, it's a good time to launch. If the streamer is consistently standing horizontally, it's time to scrub the launch session and look for another day.
Here's a pic of my setup.....
10 mph max
A question for everyone.... If your wind is going left to right across the launch site, which direction do you tilt the launch rod to compensate and why? If the wind is blowing from your back and towards the launch site, which direction do you tilt the rod?
I always tilt it vertical or very slightly down range. If wind is coming from the left or right I probably would just leave it one to five degrees down range.
If the wind is coming straight from behind me towards the launch pad, I’ll tilt downrange and swivel the pads left or right so the flights don’t weathercock over the spectators.
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