MTA launch event, 2017-11-18

The RRS held a launch event with the Imperial Courts class on November 18, 2017 at our private Mojave Test Area (MTA). This launch event was the latest in a series of events we’ve had through the support of the LAPD CSP program. The event had 13 alpha rockets including 3 of these having smoke tracers in the payload section and the last one with a pair of keychain cameras on the tail. The USC Impact News crew was also in attendance to document this last event in the series with the Imperial Courts class.

Dave Crisalli was our pyro-op for this event. I was glad to assist on the loading and launching operations.

smoke tracer lead wires sticking out from the payload tube

One of the keychain cameras was only a dummy to balance the rocket. The actual camera was first thought to have been destroyed on launch only to be found a few inches into the soil when the rocket was recovered by shovel. We hope to show the footage if the data on the chip was also intact.

last alpha with the two cameras on the fins, one dummy, one actual

smashed keychain camera with XD memory chip still in place

Osvaldo tried a new method of loading of the micrograin propellant in preparing the alphas for this event. His method involved weighing out the whole propellant load and pouring it all at once in a large funnel being careful not to trap air pockets. Knocking on the side of the metal tubes with a wooden hammer is done to encourage settling then slowly lowering a wooden piston on a string into the tube to get a better and more consistent packing density in the tubes.

big funnel with wooden piston on a string; new alpha loading method

The weight of the loaded alphas at the MTA before launch did show a small improvement by being slightly heavier from more propellant packed in the same tubes. The main advantage was the loading procedure was less messy than the prior method of bouncing the bottom of the tube on a wood block which often results in air pockets escaping with packets of micrograin burping back up the tube.

Osvaldo gives instructions on the weighing of the alphas before flight

The alphas from Imperial Courts had bright color schemes from each of the individual teams. Having each of the rockets labelled with the paper tags was very helpful in keeping track. We should continue this practice for future events.

alphas from the Imperial Courts class

I have been slowly working on a small horizontal thrust stand to incorporate the load cell transmitter donated to the RRS by Interface Inc.
Interface Inc. – Precision Load Cells

An existing concrete pad with a three anchor-bolt pattern will be used and I have the first piece which is a steel footing plate to mate up with the hole pattern. Many thanks to Matt Moffitt of CNC Specialty Machining of Huntington Beach, CA, for his craftsmanship.

anchor plate for an RRS horizontal thrust stand

The students of Chaminade High School in Chatsworth also hot-fired their 4-inch solid rocket motors of their own making. After resolving some problems with the casing, the results of the firing were good.

4-inch solid motors from Chaminade High School

We also hosted UCLA as they hot-fired their liquid rocket. They attached their propellant tanks to one of our thrust frames for a full system demonstration.

UCLA NO2 and kerosene liquid rocket being mounted for firing

UCLA makes final preparations for firing

After a lot of preparations and waiting until after sunset, UCLA’s hot-fire did not disappoint those of us who stayed into the cool hours of dusk. Their nitrous-oxide and kerosene liquid rocket fired for full duration and to what looked like great results.

UCLA fires for full duration.

RRS director of research, Richard Garcia, with his brick as a camera tripod

We thank all of the parents and the LAPD officers who made the event a success. Also, many thanks to Dave Crisalli and the RRS membership who helped with the hundreds of things that needed to be done. We look forward to the next launch event at the MTA early next year.

November 2017 meeting

The RRS held its November monthly meeting at the Los Angeles Cleantech Incubator in downtown Los Angeles. Our regular location at the Ken Nakaoka Community Center in Gardena was closed for Veteran’s Day on Friday, November 10th.

Los Angeles Cleantech Incubator (LACI)

Meeting topics included the upcoming launch event with the kids from the Imperial Courts neighborhood. This event was postponed to November 18th and was greatly anticipated as the kids worked hard and learned a lot in the five-week program put on by the RRS events team with the help of the LAPD CSP program.

Imperial Courts students prepare their paper rockets for launch

The program included a tour of Los Angeles Air Force Base at the SMC Heritage Center with Lt. Col. Alec Porter where the kids got to build and launch paper rockets.

Paper rockets at LA AFB with the Imperial Courts RRS class

USC Impact News has been documenting the whole Imperial Courts class program including the launch event at the MTA. The RRS looks forward to seeing their finished program at the end of the semester this December 2017.

The programs with LAPD CSP have been very successful and another program with Florence Griffith Joyner Elementary School is in the works for early next year.

The RRS symposium is in the planning stages for the upcoming 75th anniversary symposium on April 14, 2018. Several invitations to presenters and exhibitors have been issued and more are in the works. Frank Miuccio is leading the symposium again and we hope to have an even grander event for the public on this special occasion.

The Astrojet newsletter still needs submissions! We have had several interested parties, but no submittals have been received.

Please! Submit your drafts to the RRS secretary right away.
secretary@rrs.org

The Astrojet newsletter was the original publication started by the RRS when it was founded by George James in 1943. We thought it fitting to issue this one-time edition of the Astrojet for our 75th anniversary on January 6, 2018. It will be available in print only and the funds collected will support the RRS in our anniversary year events. Issues will be available by mail to our membership and other interested parties for a cost of $10 per issue.

Nominations of next year’s officers for the RRS took place at the meeting which is our normal custom. Voting by the administrative membership is underway and the results of the elections will be announced at the December 8th meeting. The meeting will be at the Ken Nakaoka Community Center in Gardena, as usual at 7:30pm.

Please let me know if I have missed or misstated anything in this post. See you at the next meeting.
secretary@rrs.org