NICE work guys Well done!!! Cheers, Flint http://www.pyrosystems.com/flint/ >________________________________ > From: Richard Nakka <richard.rocketry@xxxxxxxxx> >To: sugarshot@xxxxxxxxxxxxx >Sent: Wednesday, January 22, 2014 5:47 AM >Subject: [SS2S-Main] Sugar Shot Weekly Activity Report -- Jan.13-19, 2014 > > >Highlights of recent developments on the DoubleSShot project >--------------------------------------------------------------------------------------- > >-Randy Dormans has kindly agreed to fabricate a replacement motor >casing for the one that suffered a burn-through during the test firing >of the K-motor with 4 DD slot grains. Randy will also fabricate a >second casing to hold six propellant grains. > >-A regular avionics telecon was held this past Sunday. Participants >were Chris King, Hans Olaf Toft, Mattias Lampe, and Richard Nakka. >Hans reported that he’d determined that a new compiler can be used to >compile modified code for the Telemetrum flight computer. This was an >important development, as the current compiler was unable to compile >revised code due to code size limitations. Richard reported that >testing of the prototype de-spin system has wrapped up with good >results. Mattias may take on the challenge of developing a controller >for the flight version of the de-spin system. The next telecon will be >held on Feb. 2nd. > >- Vicente Alvero has performed further testing of the prototype Pyro >Separation Device (PSD), this time with successful operation of the >device which resulted in clean separation of the spring-loaded >simulated coupler and airframe. A stiffer spring has been ordered and >will be used to do final verification testing of the prototype under >greater preload. >http://sugarshot.org/downloads/psd_sim.jpg >http://sugarshot.org/downloads/psd_test9-success.avi >(photo and video courtesy Vicente Alvero) > >- Richard has completed the machining of the graphite “nosecap” that >will be used for Ablative Experimentation No.3 (aerodynamic heating of >nose cone). The nosecap will be sent to Vicente Alvero, who will >perform the testing in the near future. > Taper section machined: >http://sugarshot.org/downloads/dscf1701a.jpg > Profile machined as a series of steps determined from CAD model: >http://sugarshot.org/downloads/dscf1702a.jpg >http://sugarshot.org/downloads/dscf1703a.jpg > Contour check of stepped profile: >http://sugarshot.org/downloads/dscf1707a.jpg > After smoothing with flat file, contour check of final profile. >http://sugarshot.org/downloads/dscf1709a.jpg > Finished nosecap: >http://sugarshot.org/downloads/dscf1710a.jpg >http://sugarshot.org/downloads/dscf1711a.jpg >http://sugarshot.org/downloads/dscf1712a.jpg >(photos courtesy Richard Nakka) > >-Ed Brown, an SS2S Bronze Donor, has kindly offered to donate a >two-channel “TC Logger USB” data acquisition unit (www.TCLogger.com). >This simple to use unit should well suit our needs for collection of >motor thrust and chamber pressure. On behalf of the SS2S team, thanks >so much, Ed. > >-Alex Canela (http://www.rctotal.com/), who has performed volunteer >machining services for SS2S recently, has kindly volunteered to >compose the webpage for the upcoming Tool Raffle fund-raising drive. >This raffle will have four prize lots of miscellaneous European-made >hand tools (all brand-new and donated by EGAMaster). > >-As previously reported, SKF Spain (http://www.skf.com/es/index.html ) >has donated a set of “lip ring” seals valued at approximately 850 € . >These are required for the propellant melting system under development >by Pol Clauwaert in Belgium, under direction of Antoon Vyverman. This >donation was arranged by Vicente Alvero, who had recently received the >seals and has sent them to Pol. Well done, once again, Vicente. >http://sugarshot.org/downloads/seal1.jpg >http://sugarshot.org/downloads/seal2.jpg >http://sugarshot.org/downloads/seal3.jpg >(photos courtesy Vicente Alvero) > >Each individual donation brings us closer to our goal of pressing the >LAUNCH button of our Space-bound rocket: >http://www.sugarshot.org/sponsors.html#Donors >--------------------------- >-Sugar Shot to Space is on facebook. Check us out. >http://tinyurl.com/2exr92k > > >