#191
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#192
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Thanks for the free advertising! Most of all Thank you for all of your help, my rockets would never have been if it wasn't for you! I sent the rockets to you as a small payment for your help! Wasn't expecting you to post a build thread on them! Wow!! Thank you! Hi Mike, Yes, they are listed at ecardmodels.com, Chris was nice enough to list them! Best regards, Mike Bauer |
#193
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Yogi,
The Saturn V you tried to fly is my design! Now I expect you to get it right (so I can shamelessly rip you off and fly my own model...) ;-) Mike |
#194
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Fly real high Peter - them buggers pop off with some ferocious EMP! Never underestimate the bear ...
MBauer - best kind of help, I blather and you do all the hard work. But, if it gets us one more future scientist/engineer I'll be happy - OK also happy if someone just has some fun with the idea. Other-brother-Mike - In your case, thanks for designing a superb little rocket. The Saturn V scaled up nicely to just over a foot and made an elementary school teacher (local NASA teacher liaison, space camp graduate, fourth runner-up in the "teacher in space" competition - bitter sweet honor, that) very happy. Without a small tube (straw) to contain the pressure it only went up about 10 feet, but it made a heck of a POP when it came of the tube. I've built several of Ton's SaturnVs, and 1bs, for the rocket gardens but those aren't candidates for fliers. Key to the stomp rockets is enough graphics to look good while being as simple with as few parts as possible - that way you can launch without guilt since you can build spares and replacements easily. Yogi Last edited by Retired_for_now; 06-15-2010 at 08:00 AM. |
#195
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Morning Test Flights
Hot and sticky - so outside for some fiddling before it gets hot enough to melt me.
Atlas stomp rocket will need some small fins to stabilize it for a hard launch. It gets about 20-30' before going random. Did some fiddling around with airplanes - it's easy to make a nice glider with a little judicious adjustment of the balance and trim. The stomp launcher works OK for it IF you launch softly to the glider's flying speed. A hard launch puts the glider totally outside its trim range. Of course if you build something with wings that's designed to go faster: It flew so well (stable and fast) I haven't had the guts to launch it hard. All the way across the yard with a light step at the pictured launch angle. It'll either end up in the road or in the bay - either would be not-good. Small, stiff, and flat flying surfaces. Of course, once I build a couple more we'll have something for range safety to play with ... Yogi |
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#196
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ooohhhhh cool! VIDEO!
__________________
Want to buy some models from independent designers? http://www.ecardmodels.com and visit the shop! |
#197
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Arrrrgh... Man... Want...!
Yogi,... You're killing me. I can't get to building fast enough and now you come out with this? We have a BOMARC at the National Museum of the US Air Force here in Dayton, and I always thought it was really cool. Now I simply must have one! When will you be making it available, sir? Thanks, Mike |
#198
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Well, Chris. I guess I'm just a techno-troll. It's hard enough to grab the camera and take a few shots during a build. Setting up and shooting the launch (I think my little digital camera can shoot video-no sound) is too much like work. You can lay raw eyeballs on it for about $5 in PVC and an hour or two to cut out and build one...
Bomarc (the missile, not the modelling artiste) is a good flier (not that bomarc may not be a good pilot, I just don't know him that well) - but, like all airplanes, touchy to rig stable. The rockets have such small control surfaces (fins) that you don't have to be very precise so long as the weight distribution is OK - nose stays in front and everything else follows. Airplanes have so much aerodynamic surface that any little adjustment makes for a lot of force when it comes off of the launch tube. So long as it's weighted correctly it will go, but it may go screaming off in all directions if the wings/tail are just a bit off of neutral. The problem is trim speed. Control surfaces that are adjusted for a nice, long glide are way too extreme when it comes off the rail at a much higher velocity. I usually set the glide trim by either tossing the gliders or using a short piece of tubing like a blow gun. With the actual launcher, I've been launching fairly flat (10 degress or so) and get a pretty radical pull up and climb that (if I've got things right) ends in a stall and drop into a glide. The alternative is to zero out all the surfaces and tweak the balance (lump of clay under the removeable nosecone, see previous posts for picture of clay booger on glider's nose) until it flies with no trim needed. Maybe tomorrow ... Yogi BTW, Mike - will post this one in the Aviation downloads shortly. Looking forward to seeing some of these built and posted in the virtual model show thread. - ? Last edited by Retired_for_now; 06-15-2010 at 08:52 PM. Reason: Uploading completed. |
#199
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Bomarc (the missile) is posted
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#200
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Bomarc (the modeler) downloaded it
Nice one Yogi. I left a comment for you on the download you might find interesting.
Mike
__________________
"I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it." - George Bernard Shaw |
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