RE: Speed records
 

Guardian, in answer to your question about where to find 'chutes, try LOC Presision or Rocketman for starters. If you can't find what you're looking for there, type " high power rocketry " in your search engine and you should come up ith several sites that offer what
you're looking for.

David E.

RE: Speed records
 

Would dropping a wingless Tower Trainer 40 from 60.000 feet count Eddie??? [>:][>:][>:]

RE: Speed records
 

OK, hmmmm, I have an old BVM Viper, I could install a P-120 (not really looking for reliability here).

Only 280 mph? LOL. I betcha it will get closer to 500 than anything else (but only for a minute worth of fuel).

Regards,

David

RE: Speed records
 

hm...your gonna need some HELLA big turbines bro, i'd go with some tubinecharger radial in flow turbines, that way you don't need to have it custom made. you know they have some HUGE turbos on Ebay.com. i once saw a turbocharger from an M-80 tank. it was 16 inches long! the compressor inlet was 8 inches! musta weight 200 Lbs. hey if your going for serious thrust i suggest a very long combustion chamber, since your going for speed a longer combustion chamber allows the fuel to burn more effciectly and makeing for more thrust.and it wouldn't hurt to use more then one compressor, the more you use the better the thrust, i'd use like 3 each engine. i hope your airframe can handle that kinda thurst! good luck! (i really hate how the AMA hates turbines so much, i've seen a D/F go 230 b4, SO WHAT WRONG WITH TURBINES???!!!)

~pete

RE: Speed records
 

My father said once that overadministration is a sign of sickness..
And he was right...
I suppose you jockeys are`nt to happy now.
But it had to be in the USA.
I guess Maverick did`nt follow the rules as well?

Gudmund

RE: Speed records
 

Yes ,was just about to say that..
Save the calories to see what he can do.;)
500 miles... Very doubtfully.

Gudmund

RE: Speed records
 

WOW THAT A BIG MODEL....wait...wha?!......HOLY CRAP!! wow that thing's like 5 feet away!!! now thats FUN!!!!

RE: Speed records
 

Ok here is the link.

http://www.hessenbruch.de/niels/movi...ber_Trebur.mpg

RE: Speed records
 

I just looked at the video again. it looks like you need the pic as well. The guy strapped a GPS to the thing to get his speed. By my calculations 571 km/hr would be 354.8 mph. easily making the "Weeks Challenge."

RE: Speed records
 

no offense but i think he was just kidding there buddyand if you reread it he says if he designs it and fly's it in the next year so i don't think that plane qualifies, and sometimes GPS can get off, i once put one on my car to see the distance to my destination and it siad my top speed was like 150 mph. in the lil 4 cylinder, i don't think so. but it could be true (sure seemed like it!)


~pete

RE: Speed records
 

No offense taken. I was a bit skeptical when I saw the GPS with numerous possibilities for error.

As far as the design, it wouldn't be very hard to design something like that guy was flying. Just a very simple delta.

I agree, he was flat moving.

Roger

RE: Speed records
 

Let's see. 550mph is about 800 feet per second. So how in the hell do you propose to fly it, if you can't see it?

RE: Speed records
 

Let put things into perspective....

500mph and an airframe that weighs at least 35lbs (more like 45-55 though)... try to turn it around for the next fly by... If you can pull off a vertical turn around and keep it under 600 feet AGL... thats going to be 55.5G's (32.5 G's if you keep it under a 1000') ....How where you building that wing again??? Thats 1680 lbs of airframe on that wing....[&:]

As for that turn around... 500mph is 1mile every 5 seconds....radio range is 1/2 mile.... you have 2 seconds to turn around....hum....?

I could probably fly you along side in the Citation 5, but FAA limits us to 250 below 10K AGL....

Last thing... how do we get to 500 mph on twin turbines.....Exhaust flow is just over 400mph on most.... Throw in a conservative airframe drag number and you'll use up most of that thrust before you hit 300mph. Sure Afterburners are an option, but only if you plan on hooking up to a KC-135 for an inflight refuel....

Back to Design.....I figured a solid aluminum airframe would take the stresses....but I think I read something in the AMA about under 55 lbs.....

As for the parachute... I'd start with a circle.....

I'd stick with the more conventional designs...conventional power, conventional speed, and conventional safety.

Don't get me wrong, I like dreamers... But for success of the dream, it needs to fall with in the laws of physics and reality.... I would start a new thread on a goal that is possible.
Just my "stay at home dad" opinion.....:D

RE: Speed records
 

eddie consider your challenge taken, guys guys I just want to hit that sweet 500mph mark just once or twice in a straight line about 50' up. I hope to cruise at 180mph, 200mph. Aluminum airframe you say ? huh intresting notion, it would be sweet if it could be pulled off, but I don't even see me doing that.Perhaps we should get a "how to afterburners" on here, not many people are willing talk about how to do it because the "almighty one" governs d@mn near everything.

-Mike

RE: Speed records
 

OK.... by March 22,2005 You, aka (Guardian) will be expected to have accomplish all the following..

1) Design a new plane and post lots of drawings here on RCU. Top view, Side, view along
with Dims showing its size...

2) Post a video of the test flight.

3) Post a video of the speed runs (one up wind and one down wind) where
the avg of the two is the true speed. The speed can only be measured with
Radar or speed trap. NO GPS. All speed runs must be at constant altitude. No
diving or even a shallow dive is allowed. The AVG speed must be above 280 mph.

Rules:

The plane must have landing gear. No bungee launches.
The plane must be AMA legal and use a gas turbine engine with or without reheat..
All test flights are to be done at a non AMA field with no houses in the area.

If you video tape these flights and the speed traps and avg of over 280mph you
will receive any turbine you want valued < $3500.

If you fail to achieve 280 mph or do not meet all the requirements above, you will
buy a ~$100 servo of my choice and send it to me..

Good luck with the "Weeks Challenge"

Eddie Weeks

RE: Speed records
 

Oooooh this is GREAT stuff! Can't wait to see the drawings of the GlassCat II (hypersonic edition) :D

RE: Speed records
 

I for one, will be waiting with baited breath for the build thread.

RE: Speed records
 

So shall it be written so shall it be done !! Right now Im almost done with a small mock up of the plane, will post pics when the itty bitty mock up is done.

-Mike

B.t.W. I plan on winning that turbine :D one questoin, when it come to the ama rulesthing, do you just want it under the 55lb weight limit ? Eddie post all the "ama rules" you want me to follow.

RE: Speed records
 

Guardian,

I still did not get any answer from my above post... How do you plan on addressing those issues. Those figures I presented are the real numbers you are working with.

RE: Speed records
 

I have a very good friend (known him for 40 years now) and he has flown over 280 mph 2 times. It is not easy. Level flight at 280 mph is even harder, only because you are going to need large straight lines to fly to get that much speed built up, and coming from the vertical, at least you know you are not going to get disoriented, turn the wrong way and hit the ground.

Flying 1500 feet away from you, 50 feet off the ground is possibly the scariest thing you can imagine.

What turbine are you going to use? You need to get a motor with a high efflux velocity as well. Not all thrust is created equal when you are going for high speed. There is a big range there. Dornier flies a UAV with 2 of our motors, and it has gone over 400 mph.

RE: Speed records
 

Ok Eddie, since you dropped a guantlet I'll pick it up too.

In the photo below you can see I have made great progress on the "Weeks Challenger". I had to break out the big gun for this one. I am sure that a man of your reputation can appreciate the many design refinements I have incorporated in the system.

It would not be a disgrace for you to admit defeat and declare me the winner just based on design. These would prevent my having to prove it and possibly embarrass many of the current engine makers.

Steven

RE: Speed records
 

I LOVE the fuel tank!!!!! ROFLMAO!!!!![8D];):D:D:D:D

RE: Speed records
 

WE HAVE A WINNER...

There is no way any one can top that.... I will bring your oversize check to Austin.

VERY VERY IMPRESSIVE and I am impressed by little.

Eddie Weeks

RE: Speed records
 

I think it looks kinda like an F-104, without the skin.[8D]

RE: Speed records
 

Wait a minute Steve.... That's no GlassCat II !!!