Rocket powered R/C vehicles...

Discussion in 'The Watering Hole' started by pr_rocket04, Feb 16, 2006.

Help Support The Rocketry Forum by donating:

  1. Feb 16, 2006 #1

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    What is the coolest (in your opinion) rocket-powered R/C vehicle you have ever seen (excluding gliders)?

    In all honesty, I believe the only thing I have ever seen, is a rocket powered military unmanned plane. I know there are rocket drag cars, but I'm not too sure what speeds they run, or if they are R/C controlled.

    The reason I am asking this, is because I soon would like to start a long-term project to be rocket powered, not leave the ground, and house a video camera. I could shove a K motor in my 1/5th scale R/C car (what everyone I know wants to see), but I have another project in mind...a rocket-powered R/C snow sled. This seems like the best idea for friction incurred on the various on-ground scenarios.

    I'd like to start with maybe a short burn I motor to test the idea, then lead up to something like a K or L motor in a larger design. I plan to slow it down with brakes and a large chute.

    Any suggestions? Also, I've come to the conclusion that on a wide 4 ski sled, a 5 degree exhaust slant should keep it adequately planted, as well as using front and rear wings for downforce...is this about right? I plan to definitely have inboard suspension, with a very low-slung aero profile, with flat carbon suspension arms also used for downforce.

    Then again, the K motor in the 5th scale sounds so much easier...
     
  2. Feb 17, 2006 #2

    TeenRocketNerd

    TeenRocketNerd

    TeenRocketNerd

    Well-Known Member

    Joined:
    Jan 17, 2006
    Messages:
    1,615
    Likes Received:
    0
    hmmm. better yet...dig out the old pair of roller blades in your closet... :D:D:D
    do you think you would need brakes in addition to a chute?? maybe only as a "fail safe" in case something goes wrong? I'd just run it with a chute... a big chute. A rocket sled sounds oh oh sooo coool.

    Maybe look at some pics of some of the vehicles they've used to break the world land speed record for some ideas of interesting/cool looking shapes. I've seen some insanely cool designs on shows I've seen about them on tv. just my .02
     
  3. Feb 17, 2006 #3

    robfire820

    robfire820

    robfire820

    Well-Known Member

    Joined:
    Feb 27, 2005
    Messages:
    381
    Likes Received:
    0
    I have wanted to build a rocket powered boat to go across the water on a K250. That would be fun to watch going across a lake but it would have to be almost no wind and that doesnt happen much here. The boat is designed and ready to be built I just need the motor and a good place to make it go!
     
  4. Feb 17, 2006 #4

    brianc

    brianc

    brianc

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    3,220
    Likes Received:
    1
  5. Feb 17, 2006 #5

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    That sled is...so incredibly simple!

    Talk about bolting on a rocket motor!

    You see, I think the sled is the best idea mainly due to the ease of design in its working function, and fact that once it is cruising it should coast for a long time without enduring too much friction. The suspension design can be stolen from an R/C formula 1 design, and the body I feel will turn out to be a short pointy wedge. The body may look like crap in the end, but I hope to build a plate chassis and suspension components from carbon fiber.

    I think it will benefit most from something like an I600 up to a K1275 etc., something with light weight and a quick powerful burn to get it up to speed. But, I imagine you could go the other way and use a long burn, but I think what I'm really aiming for is achieving landspeed with the vehicle (no, not any records).

    As for the boat idea, that sounds equally as interesting, actually...anything with a rocket motor strapped to it sounds interesting. :D
     
  6. Feb 17, 2006 #6

    adrian

    adrian

    adrian

    Well-Known Member

    Joined:
    Jan 19, 2009
    Messages:
    2,394
    Likes Received:
    24
  7. Feb 17, 2006 #7

    Micromeister

    Micromeister

    Micromeister

    Micro Craftman/ClusterNut TRF Lifetime Supporter TRF Supporter

    Joined:
    Jan 19, 2009
    Messages:
    15,074
    Likes Received:
    30
    Gender:
    Male
    Location:
    Washington DC
    Not to be a wet mop or anything but I believe you folks need to check your safety codes. I seem to remember something that lead me to beleve we do not launch things along the ground. I believe that's one of the reasons Estes cars have drawn such a storm since their release.
     
  8. Feb 17, 2006 #8

    WiK

    WiK

    WiK

    Site Admin

    Joined:
    Jan 18, 2009
    Messages:
    2,636
    Likes Received:
    0
    Last I checked a remote control sled isn't a rocket.

    Phil
     
  9. Feb 17, 2006 #9

    Micromeister

    Micromeister

    Micromeister

    Micro Craftman/ClusterNut TRF Lifetime Supporter TRF Supporter

    Joined:
    Jan 19, 2009
    Messages:
    15,074
    Likes Received:
    30
    Gender:
    Male
    Location:
    Washington DC
    if it's powered by a Rocket motor it is a Rocket.
     
  10. Feb 17, 2006 #10

    eugenefl

    eugenefl

    eugenefl

    Well-Known Member

    Joined:
    Apr 22, 2009
    Messages:
    4,344
    Likes Received:
    6
    John, if you could cite the online reference it would remove any doubt or cause for debate. Please don't take this as a counter productive remark, but as a "Yield" sign for the sake of avoiding counter productive online debate.
     
  11. Feb 17, 2006 #11

    sandman

    sandman

    sandman

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    10,468
    Likes Received:
    5
    How about launching the "rocket sled" out on a frozen lake?

    That's not "on the ground" it's "on the ice".
     
  12. Feb 17, 2006 #12

    Micromeister

    Micromeister

    Micromeister

    Micro Craftman/ClusterNut TRF Lifetime Supporter TRF Supporter

    Joined:
    Jan 19, 2009
    Messages:
    15,074
    Likes Received:
    30
    Gender:
    Male
    Location:
    Washington DC
    Who said RCBG and RG's aren't rockets? they are and are launched vertically or nearly vertically, within 30° of vertical per the safety codes.
    Anyone should be able to reason that if something is powered by a Rocket motor it is by the fact alone a rocket.
    Test sleds are called rocket powered test sleds when powered by rocket motors. Jet and rocket powered cars and boats are called Jet or rocket powered depending on the power plant.
    Moreover the safety issue is about potential damage from such devices, not the terminology of the code. People need to use a little common sense. This Hobby has servived all these year by the hobbiest using their heads for something other then a hat rack not persuing such asinine things. I said this in another thread recently, but it is REALLY needed here "Think before you ACT".
    Here again out in the middle of the desert somewhere or a frozen lake in some isolated area one might get away with such things but your average Joe posting to this forum isn't likely to be in that position. More likely a Kid, teenager or someone NOT really thinking the matter completely through. Directional control, distance traveled and methods of recovery not withstanding Launching an Rocket powered anything along the ground isn't a very wise thing to do.
     
  13. Feb 17, 2006 #13

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    All I'm saying, is out there, someone is going to do it...

    Maybe Mythbusters, maybe a race team etc. Are rocket dragsters certified with TRA or NAR? I think not (although I am).

    Heck Mythbusters just spun a dummy around a freaking swingset with an M motor, now tell me they were even certified...they had to use like 3 motors before they could even get it to work.

    Well, I'm not trying to start an argument, but risks are always involved. It isn't my fault if some kid goes out and does something stupid, he made that choice. If you disagree, and you have kids, then I hope you don't allow them to watch TV.

    As far as using a certed motor, if this would cause a big storm, no biggie, I make a much cheaper experimental motor.

    Things like this have to be discussed somewhere, whether it be around a launch site or in a forum, you can't run hiding from every idea that comes to mind (no matter what, kids are most likely going to hear about it). And heck, I just might pull it off perfectly.

    Now tell me, how do I obtain this certain permission needed to build my own rocket sled?
     
  14. Feb 17, 2006 #14

    WiK

    WiK

    WiK

    Site Admin

    Joined:
    Jan 18, 2009
    Messages:
    2,636
    Likes Received:
    0
    My interpretation of the snipped of Safety Code I quoted is that it's for things that are intended to fly. I really don't see how a sled/car/boat falls under NAR/TRA rules. Of course that's just me, and I could be completely wrong.

    Phil
     
  15. Feb 17, 2006 #15

    r1dermon

    r1dermon

    r1dermon

    Well-Known Member

    Joined:
    Mar 1, 2009
    Messages:
    2,296
    Likes Received:
    1
    id check with local authorities where you'll be launching it...you may have to pay a fee for holding a "demonstration", but they might let you fire it off...
     
  16. Feb 17, 2006 #16

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    I think it's mainly due to the fact I mentioned certed motors.

    When I think of something in my head, I may need to get the picture out using a certed motor as an example. As stated, making an ex motor is no biggie for me, but beyond that, there is really no room to argue this idea...as ideas like this are being carried out everywhere...

    I mean, post #3's link anyone???
     
  17. Feb 17, 2006 #17

    TeenRocketNerd

    TeenRocketNerd

    TeenRocketNerd

    Well-Known Member

    Joined:
    Jan 17, 2006
    Messages:
    1,615
    Likes Received:
    0
    BUILD THE SLED--for god's sake man, Don't let NAR/TRA scare you!!! :D just don't try to file a claim with them if it damages something :D:D:D I do like the idea of launching on a frozen lake. If mythbusters can do it, so can you!!! :D:D IMHO (too much drama....I know...:D)
     
  18. Feb 17, 2006 #18

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    I will definitely check, but under assumption, it is a private activity (we have flat land available for use), and if the motor(s) are ex, I wouldn't think this would fall under regulation. But, the ice lake idea has really got me thinking, so I may need to head up North somewhere, since I'm from IL, and there will not be favorable conditions until next winter here. Then again, it may not be complete until next winter with the way carbon supplies are going.
     
  19. Feb 17, 2006 #19

    r1dermon

    r1dermon

    r1dermon

    Well-Known Member

    Joined:
    Mar 1, 2009
    Messages:
    2,296
    Likes Received:
    1
    are fireworks legal in your state? i dont know, im sure if you fired off a K, someone would notice and call police, and they'd try to confiscate your vehicle or whatever...i've had it happen to me before when i used a hanger and steel wool to make a gigantic sparkler..
     
  20. Feb 17, 2006 #20

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    LOL.

    Yes they are legal...

    I thought about this another way. My neighbor has a turbine powered jet that roars. When he flies it, it starts on the ground, and proceeds to the air. This is the jet, it just never leaves the runway. :D
     
  21. Feb 17, 2006 #21

    Johnnie

    Johnnie

    Johnnie

    Well-Known Member

    Joined:
    Dec 31, 2002
    Messages:
    4,289
    Likes Received:
    0
    You guys really need to do what would really get the "wow factor" from the crowd, and make scale rocket powered racers:

    http://www.leadingedgerocketracing.com/


    ...some of the other ideas could possibly get you the Darwin Award :rolleyes:

    Rocket Powered gliders can be quite awesome...especially on a K250 longburn...
     
  22. Feb 17, 2006 #22

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    I did read all about that in my Popular Science. Nifty, but, uh, not too plausible...

    This is however, and me and another individual are going to start working on drafts of a design tonight.

    Main priority, is a design in which nearly every part can be fabricated from carbon, to keep things cheap for me.

    I'm just curious, when did this project ever become a "crowd" thing???

    This is going to be privately launched...

    A video is about the only thing going public.
     
  23. Feb 17, 2006 #23

    North Star

    North Star

    North Star

    Well-Known Member

    Joined:
    Apr 14, 2009
    Messages:
    401
    Likes Received:
    0
    Wasn't Brent McNeely (of Extreme Rocketry) involved with an organisation a few years ago that ran rocket car races? They had a full safety code of their own and used the stretched wire system for guidance. Rocketman had a kit for this class (HPR size).
    I haven't heard anything about it for a while, I remember events near Las Vegas and I think there was a report in 'High Power Rocketry'.
     
  24. Feb 17, 2006 #24

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    I'm going to send him a message about this organization, and see if he can provide some insight on this topic.

    Thanks.
     
  25. Feb 17, 2006 #25

    Nate

    Nate

    Nate

    Well-Known Member

    Joined:
    Aug 20, 2005
    Messages:
    1,266
    Likes Received:
    0
    this is a very exciting project! I really look forward to seeing this progress.

    However, in the real spirit of TRF, I've got to say;

    Come on! be a man! put a 76mm mount in it so you've got the options! :D:D:D:D:D


    Just saying....K 1275 is cool......but an L1400, and an M3000 is even cooler!

    Never hurts to prepare for the big stuff!
     
  26. Feb 17, 2006 #26

    North Star

    North Star

    North Star

    Well-Known Member

    Joined:
    Apr 14, 2009
    Messages:
    401
    Likes Received:
    0
    http://www.mcneely.net/nrca/

    National Rocket Car Association.

    It looks a bit dormant but there are some nice pics in the links.

    The articles in HPR were Aug 97 and June 98
     
  27. Feb 17, 2006 #27

    pr_rocket04

    pr_rocket04

    pr_rocket04

    Well-Known Member

    Joined:
    Jul 10, 2004
    Messages:
    879
    Likes Received:
    0
    Brent just emailed me back.

    There really isn't any regulation at all on this sort of thing, considering the NRCA is gone, just basic land permission, and of coarse safety.

    It looks like the NRCA even had an R/C class as well for rocket racers.

    Looks like this idea isn't too far fetched after all...
     

Share This Page

Group Builder