[SS2S-Main] Re: Sugar Shot Weekly Activity Report -- Feb.17-23, 2014

  • From: "Alberto Gassol" <alberto@xxxxxxxxxxxxxxx>
  • To: <sugarshot@xxxxxxxxxxxxx>
  • Date: Tue, 4 Mar 2014 13:55:03 -0800

Up and running!


----- Original Message ----- From: "Richard Nakka" <richard.rocketry@xxxxxxxxx>
To: <sugarshot@xxxxxxxxxxxxx>
Sent: Friday, February 28, 2014 9:32 PM
Subject: [SS2S-Main] Sugar Shot Weekly Activity Report -- Feb.17-23, 2014


Highlights of recent developments on the DoubleSShot project
---------------------------------------------------------------------------------------
- On Saturday, Feb.22, Vincente Alvero test fired the VIC-2B
experimental rocket motor. This was the first test firing of this
motor, and was basically a successful firing. The primary purpose of
this test was an exercise in propellant casting, motor assembly and
static test firing operation. Secondary goals were to test a new
ablative material applied to the nozzle convergent section, and to
test a new carbon-fibre nozzle cone. Two problems occurred during
firing: leakage past the forward bulkhead o-ring, and the nozzle cone
blew off shortly after thrusting commenced. The leakage was a result
of a tiny seam in the motor casing, which will be filled for the next
firing. The nozzle cone blew off as a result of overly-shallow blind
holes in the nozzle cone that acted as recesses for the attachment
screws. This will be rectified by drilling deeper holes. The second
test firing of the VIC-2 motor is scheduled for Saturday, March 1st.
   Close-up video-captures of motor firing:
http://sugarshot.org/downloads/vic-2b_starting.jpg
http://sugarshot.org/downloads/vic-2b_thrusting.jpg
http://sugarshot.org/downloads/vic-2b_burnout.jpg
  Videos of test firing:
http://youtu.be/htpYBGZtrSI
http://youtu.be/nkPF4ldzP7A
(videos courtesy Vicente Alvero)

-The planned firing of the 4-grain DD-slot motor, currently scheduled
for Saturday, March 1st, may have to be postponed due to expected
severe weather at the FAR experimental test site.

-Antoon Vyverman reports recent progress with the propellant melting
system that the VRO group is developing for SS2S. Antoon wrote "Pol
has almost finalized the mechanical part of the melting system. The
aluminum tubes have been anodized. David Steemans can now finalize the
heating control system. In the meantime a sufficient quantity of
sorbitol was bought to be able to start the testing. For the testing,
we will use a mixture of salt (NaCl) and sorbitol".

- Vicente Alvero has supplied photos of recently machined parts for
Ablative Experimentation Part III. These parts were expertly machined
by a volunteer in Spain by the name of Pedro Brines.
http://sugarshot.org/downloads/img_1655a.jpg
http://sugarshot.org/downloads/img_1656a.jpg
http://sugarshot.org/downloads/img_1657a.jpg

THE SS2S TOOL-RAFFLE IS UNDERWAY. PURCHASE YOUR TICKET FOR A CHANCE TO
WIN, AND SUPPORT SUGAR SHOT IN OUR EFFORT TO REACH SPACE ON THE POWER
OF SUGAR.
http://sugarshot.org/tool-raffle/index.html
---------------------------
-Sugar Shot to Space is on facebook. Check us out.
http://tinyurl.com/2exr92k



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