Rockets in da Hood

10 responses to “Rockets in da Hood”

1. 

   : Nils

   Apr 24, 2010 at 5:02 am

   drool

   Reply
2. 

   karl.simpson

   Apr 24, 2010 at 5:06 am

   Holy cow, mach 3? MACH 3!? That’s crazy!

   Reply
3. 

   Dr DAD (Daniel A D’Auria MD)

   Apr 24, 2010 at 11:44 am

   Steve, we’re not going to wake up to a photo of you riding a larger version of one of these monstners into space, are we?

   Reply
4. 

   Astrocatou

   Apr 24, 2010 at 6:54 pm

   that looks funny…to me.Fins seem small.
   ? stability while at 2 stages..??

   Just casting my mind back a few years.

   Reply
5. 

   Tamooj

   Apr 25, 2010 at 3:56 am

   I think Steve likely meant to say "Is supposed to break Mach 3", or "the plan is to break Mach 3".

   Can we see pictures of your son’s rocket design? Sounds like fun!

   Reply
6. 

   msamaclean ©

   Apr 25, 2010 at 4:39 am

   Those are just hot!

   Reply
7. 

   jurvetson

   Apr 25, 2010 at 11:06 pm

   Dr. Dad: could happen… =)

   Stability: should be fine, and we simulate extensively in advance. The upper stage will be supersonic at ignition, which is why it has much smaller fins. Here is the last RocketMaverick’s two-stage rocket launch and video. It corkscrewed a bit when the solid graphite nozzle fractured from the pressure.

   Tamooj: Sure, here is his current RockSim, which we plan to test on Saturday.

   

   Just noticed that it should go supersonic. If it survives that, he will mount 29mm motor tubes on each of the fin tips, and then it will launch on a cluster of four motors (Three G motors on the fins and a central 54mm Cesaroni)

   The reduction coupler mid-frame is for a strap-on video cam. We use half of a plastic Easter egg as the nosecone on an Oregon Scientific cam.

   Reply
8. 

   Astrocatou

   Apr 25, 2010 at 11:37 pm

   I once did a 3 stage jobbie…a real Magyver…!!

   Sadly I lost sight of it after stage 2…,launched off a small island…
   Staging is tricky…
   Nasa has it down pretty good.
   I am really enjoying seeing this stuff…
   Last one I built had an ? Aerotech ? motor..Drove to Syracuse NY to buy those..
   THAT went well…
   Found 6 months later (no chute-one way flight only..)

   Sadly I suspect crossing from USA back to Canada with a trunk full of those motors is tricky now…
   Have not tried.

   PS I like your new car.

   Reply
9. 

   jurvetson

   Apr 26, 2010 at 1:59 am

   Heh… 3-stagers often lead to crazy antics…

   

   Reply
10. 

    Astrocatou

    Apr 26, 2010 at 10:03 am

    incoming !

    Reply