Saturday, September 27, 2014

Video re: NARHAMS' night launch

My LHS is putting together a video about the yearly NARHAMS night launch. Here's a teaser.

Launch Report 2014-12

Location: NARHAMS, Ag Center
Weather: perfect - sunny, mid 70's, wind 0+
Total flights: Today - 10; YTD - 99
Total motors: Today - 10; YTD - 89
Motors by class YTD: H2O-17, uHybrid-1, MMX-1, A-4, B-6, C-21, D-7, E-19, F-17, G-10, H-2

Just when I thought I couldn't make the launch...

The weather was perfect and there essentially were no lines. When I arrived, Mike Kelly was in the evil corn maze recovering a rocket. I thought, "aw, #$%^!" However, that was fluke. There was essentially no wind and I never even had to walk past the base of the hill on the front of the range head.

My Flights:
  1. Estes Mega Mosquito on an E15-4 - Good flight.
  2. Estes Majestic on an E16-6 - Good flight. Ejection was 2 sec. late.
  3. Estes Ventris on a G74-6 - Very nice!
  4. F-in-Rocket on an F15-4 - Good flight.
  5. Model Minutes XFLR-7 on a C11-3 - After the kludgy fix after the last flight, the 'chute didn't come out. This old rocket is now retired after 19 flights.
  6. MRC Iron Man on a C11-3 - Slow flight. Popped one pod, probably due to a shroud line snag.
  7. Tiny Tim Smoke on a C11-3 - Good flight.
  8. Half AssTron Superoc on a C6-3 - Very high flight. After separation, both pieces drifted down parallel to the ground.
  9. Art Applewhite Stealth D5 on a C6-3 - Nice spinny flight.
  10. Estes Mini Patriot on an A10-3 - Good flight.

Wednesday, September 24, 2014

NARHAMS' September 2014 Goddard Launch

This video, discovered via MAKE, documents the September 7, 2014 NARHAMS/Goddard Public Launch. It includes a description of the club's launch system and features a bunch of 3-D printed rockets made by kids from the Nova Labs Rocketry Group. You can see all the scheduled NARHAMS events here.

Monday, September 22, 2014

Sunday, September 21, 2014

On the durability of cardstock

Well, as I was repairing a few creases in my Model Minutes XFLR-7, I detected a more severe issue. The inner motor/parachute tube had burned through over 50% around its circumference. This tube was raw cardstock. In retrospect, a coat of epoxy on the inside of the tube might have been a good idea. I'm a little surprised that, with such a huge gap in the tube, the outer shell neither popped nor exhibited any charring.  I wonder if it was merely weakened and yesterday's hard 3-point landing jarred it loose? As opposed to the rocket laying over on touch down.

This rocket has seen18 flights, 10 on C11s and 8 on D12s.

I neglected to photograph the damage before I started repairs, but here's a pic from yesterday's launch.

Saturday, September 20, 2014

Launch Report 2014-11

Location: NARHAMS, Mt Airy
Weather: sunny, high of 84, wind 5-10
Total flights: Today - 9; YTD - 89
Total motors: Today - 9; YTD - 79
Motors by class YTD: H2O-17, uHybrid-1, MMX-1, A-3, B-6, C-16, D-7, E-17, F-16, G-9, H-2

The weather was pretty nice - a tad hotter than expected and the wind, while not too bad, was vectored to the trees. At the last moment, I packed some extra low power rockets so all mine stayed out of said trees. My one F-powered 4FNC flight went over them so I scrubbed one G and two F flights. It looked like the wind might have been shifting to a more favorable direction, but I didn't wait it out.

It was fun seeing all the nice night launch rockets even though the lights were off during the day. And, I got to use the club's brand new rails and 1/4" rod. I brought my pad but didn't have to assemble it.

My Flights:
  1. Model Minutes XFLR-1 on a D12-5 - Nice flight with its signature slow roll. It stuck the landing but crunched one pod. This cardstock model is showing its age but I'll fix her up.
  2. Shrox SHX-15 on a C11-3 - Nice swooping flight.
  3. Talk Radio on a C11-3 - Good flight.
  4. Half AssTron Superroc on a C6-3 - Suffered separation anxiety. Think I'll replace the shock cord this time.
  5. Semroc Gee'hod on a B6-4 - Up was good but the 'chute lost a couple of lines. Hard landing but no damage. Needs a C.
  6. Paper Big Bertha on an B6-4 - Good flight.
  7. Hat of Death on an F15-0 - Wowed the crowd as usual.
  8. F-in-Rocket on an F15-4 - Nice lumbering flight over the tree line.
  9. Art Applewhite Stealth D5 on a C6-3 - Great spin. Scared one rocket mom as it landed close by.
Here is one of my photos from the day. The rest can be found here.


Friday, September 19, 2014

Sport Rocketry, September/October 2014

The best items from NSL were a 1/38 scale, 9' tall, 3-stage, 42 G/H motor Soviet N1 and an oddroc that uses a scale foam cinderblock as a fin unit. The N1 hung on the rod and roasted its 1st stage (i.e. a 'really cool' flight) while the cinderblock rocket was just plain cool. There is other stuff in the mag...

Saturday, September 13, 2014

Gold medal rocket girls

"Alyssa Stenberg, 15, and her U.S. Junior teammate Allison Van Milligan, 14, display Alyssa's 1/5 scale model of the Aurora Flight Sciences Space Grant 1 rocket that won a gold medal in the 2014 Space Model World Championships." Read the entire press release here. Side note: I couldn't find a photo of the real rocket.