Sunday, May 01, 2016

Have Verna and Randy discovered my secret?

In this month's Photo of the Month, tucked under a photo essay about Rolf Stabroth's amazing HPR Proton model, Verna and Randy mention that they think I may be an incarnation of Uncle Fester. Well, I suspect none of you have seen the two of us together, so....(I see the resemblance...I do have a Dungeon...but haven't launched rockets from my roof.)

Jesting aside, Rolf's rocket is worth you following the link. You'll also see a couple of my rockets too :)

Meanwhile, their Fire and Smoke features several cool things, including this photo from the Weather Nerds of Alabama (Facebook link, membership may be required).

Oh, yeah, there are a bunch of Rocket Girls there too!

Tuesday, April 26, 2016

Elephants as rocket fuel

To demonstrate how much rocket fuel it takes to get to orbit, YouTube user Maxim Sachs created an animation that replaces standard fuel components such as RP-1, LH2 and LOX with Asian elephants. I didn't check his math but I also didn't count the elephants. The folks at Yahoo/finance took this further by making an infographic comparing the New Shepard, Mercury Atlas, Titan 2 and Falcon 9 to the Saturn V.  For a few milliseconds, I wanted to create a similar diagram for hobby motors. Then I realised that I'd have to compute the mass of generalized chunks of elephant flesh, which would not be recognizable on an infographic. I'm glad that crazy thought didn't last long.

Wednesday, April 20, 2016

The fastest MagLev rocket sled you'll ever see

Well, until they launch it again. The US Air Force's 846th Test Squadron, located at Holloman AFB, beat their old speed record twice in two days last March, leaving the record at 633 MPH. The Squadron's motto is "Go Mach 10" (hypersonic speed of 7,672 mph), so I expect this record won't stand for long.

Saturday, April 16, 2016

Launch Report 2016-2 (NARHAMS)

Location: NARHAMS/Mt Airy
Weather: mid-60's, sunny, wind <5mph, mas o menos
Total flights: Today - 12; YTD - 22
Total motors: Today - 12; YTD - 22
Motors by class YTD: MMX-1, A-2, B-2, C-7, D-2, E-4, F-2, G-2

The theme of the launch was a Carl McLawhorn/SEMROC tribute, so I brought six of them. My planned 'G' flight was scrubbed due to the proximity of soccer games.

My Flights:
  1. Semroc Tau Zero on a C6-5 - Separated, but both parts came in close to one another.
  2. Semroc Geehod on a C6-3
  3. Semroc V2 on a B6-4
  4. Semroc Little Joe II on a B6-4
  5. Semroc Launch Missile on an A8-3
  6. Semroc Recruiter on an A8-3
  7. Estes Atlas on an E20-4 - Recovered via Chute Release at 300'.
  8. F-in-Rocket on an E16-4 - Late eject but 100% successful. Recovered via Chute Release at 200'.
  9. Whirlygig on an E12-0 - CATO!
  10. Half A$$tron on a C6-3
  11. First Flight Super Sonic on a D12-5
  12. Sirius SS Cestris on a C11-3 - Ejection was early. One stabilizer fin snapped.


Thursday, April 14, 2016

Wednesday, April 13, 2016