May 2018 meeting

The RRS held our monthly meeting on May 11, 2018 at the Ken Nakaoka Community Center. We were well attended, but got a late start. After the reading of the treasury report, we started with the discussion of the agenda items. We were happy to be visited by Wilbur and Mel Owens and Harry Reid of the Compton area. They heard of our work with schools and have interest in rocketry projects. We hope to form some kind of partnership to help support like-minded Los Angeles area groups.

RRS president, Osvaldo Tarditti starts the May 2018 meeting

May 2018 meeting of the RRS gets underway

First on the agenda was discussing the results of the 75th anniversary symposium. We had a lot of great feedback and built a lot of good relationships with industry, universities, schools and private groups at the all-day event. We also discussed some of the lessons learned from the symposium and what worked well and what could have been done better. The RRS is very grateful to the many people who supported the RRS in making this event possible. The discussion then turned to discuss if the RRS will hold a 2019 symposium around the same time next year. After some initial discussion, the vote was postponed to next month’s meeting.

Discussion of the 2018 RRS symposium

Second on the agenda was the upcoming launch event at the MTA on June 2nd with UCLA. UCLA will launch 10 of their commercial rocket motors as the final part of the quarterly class that Dr. Spearrin has with his students. The RRS is glad to host the event and we also plan on launching at least two of our standard alpha rockets at the event.

Alpha rocket iso view

Also, the RRS horizontal thrust stand is nearly complete as Osvaldo and I confirmed the fit of the final load cell parts to the frame. Osvaldo brought the frame and I brought the load cell to the meeting. Everything looks ready to go for final fit up on the concrete pad at the MTA at the June 2nd launch event. Having the ability to make actual thrust curve measurements on the RRS standard alpha rockets will be very valuable to better understand the performance of this classic rocket. Much of what is known of the flight characteristics is based on old knowledge which could be somewhat theoretical. Getting new data will be a step in the right direction to reducing uncertainty.

RRS horizontal thrust stand sits on a dolly at the May 2018 meeting

payload tube adapter, S-type load cell and thrust stand adapter; fit check is complete

After some discussion of scheduling other possible launch events at the RRS MTA with Cal Poly Pomona and USC, we moved on to the next agenda item.

The third topic on the agenda was about the next educational event that the RRS will support with our partners in the LAPD CSP program. This summer program will be with Operation Progress in Watts. The first session will kick off on June 15th and the final launch event is planned for July 7, 2018.

Operation Progress – Los Angeles

The fourth topic on the agenda was regarding the RRS pyrotechnic operators manual that I am compiling for the society. The RRS uses licensed pyro-ops at our events and we are on a mission to expand our roster to better support the growing activities at the MTA. Osvaldo, Richard and I have begun the process of getting endorsement letters from our fellow pyro-ops and when our applications to the state of California’s Fire Marshall office are complete and received, we will take and pass the exam to become licensed. Having a society manual to capture this knowledge is not only useful to train new pyro-ops but it is beneficial for all of our society to have simple access to this important information.

RRS pyro-op manual and training guide

The fifth topic on the agenda was a discussion of RRS payloads. I have been pushing our society membership to think about and design payloads for the many RRS standard alpha rockets we launch. Although the payload tubes are very small (1.60″ inner diameter), there are many opportunities for flying ever-shrinking sensors in these payload volumes.

Larry brought a few commercially available sensor packages that he hopes to fly in beta rockets. Some of these devices are simple and powerful which have been used in high-powered model rocketry with a lot of success. Payloads such as these will certainly work well in RRS rockets as well. Beta rockets tend to be expensive, so it would be nice to have those that fit inside the alpha payload tubes (1.600″ OD or about 1-1/8″ square).

most payloads are too big for the alpha payload tubes; force-fitting doesn’t help

Example of pre-fabricated instrumentation package; clean, simple, but often too big

I have designed an in-line second stage for an RRS standard alpha. Osvaldo was kind enough to machine the interstage and second stage pieces that I described in last month’s meeting post. The second stage would have a solid motor poured into a PVC casing that fits within the standard alpha aluminum payload tube. The pieces fit very well together which is very encouraging. I took the interstage part home with me to integrate the umbilical port and wiring and work up the delay timer for the upper stage igniter.

RRS standard alpha interstage and second stage motor casing

The final topic on the agenda was an idea that Osvaldo had for more educational program at the RRS. The RRS has gotten to know many fine speakers in areas of professional and amateur rocketry. In the past, we have invited speakers at our meetings, but we often don’t have an appropriate amount of time to listen and discuss these topics at length. The idea put forth is that the RRS would hold Saturday morning presentations to our interested membership. The idea was well received and approved by the society. A list of speakers is being built and Osvaldo will try to schedule the first presentation in what we hope will become a long series. More details will be coming in future announcements.

One last topic wedged in as we were finishing was that the RRS will be attending the Two-Bit Circus event in Hawthorne, California, next Saturday, May 19, 2018. The Two-Bit Circus is a high-tech STEAM-based amusement park that started in downtown Los Angeles and is growing to include more areas of the city. The RRS is glad to be a part of it. The link to the event is below.

Two Bit Circus – Hawthorne 19-MAY-2018

The RRS will have a booth at the Two-Bit Circus and will be bringing our air launcher for small paper rockets. Frank built a new air launcher that’s a little cheaper, but just as powerful and fun to try. The RRS will have it available for demonstration near the basketball courts at the event.

Frank’s T-shaped air launcher

The RRS meeting concluded late at 9:25pm. We are grateful to the Ken Nakaoka Community Center for letting us stay beyond the 9pm closing time of the center. The RRS must try to begin our meetings on time so we can finish on time.

If there is anything I have missed or misstated, please let me know.
secretary@rrs.org

The next monthly meeting of the RRS will be June 8, 2018. Please join us.

The 75th anniversary RRS symposium

The RRS celebrates 75 years.

The Reaction Research Society (RRS) is proud to announce the 75th anniversary symposium at the Ken Nakaoka Community Center in Gardena, California. The symposium will begin at 9:00AM on Saturday, April 21st. This will be an all-day event with a short lunch break. We hope to have local food vendors near the community center. Also, Gardena has many restaurants along Western Avenue and down at Artesia Blvd.

Ken Nakaoka Community Center
1670 W. 162nd Street
Gardena, CA, 90247

Mapquest – Ken Nakaoka Community Center

Google Maps – Gardena Recreation Center

first flyer for the RRS 75th anniversary symposium

We are proud to have speakers and exhibitors on topics of amateur and professional rocketry featuring guests from industry, academia and other rocketry organizations. Our list of speakers is below:

75th anniversary RRS symposium, speakers list

Exhibitors at the symposium include China Lake Historical Society, UCLA, CSU Long Beach, USC, UC Irvine, UCSD, Magnolia Science Academy, Spaceport L.A., our fellow colleagues at the Rocketry Organization of California (ROC), Los Angeles Air Force Base’s (LA AFB) Space and Missile Center (SMC) and officers from Los Angeles Police Department’s (LAPD) Community Safety Partnership (CSP).

pulling up the banner

Our educational non-profit group’s humble beginnings were a group of students in Glendale in 1943. Founded by George James, the Southern California Rocket Society was renamed the Glendale Rocket Society to avoid confusion with another local group. Later, the Glendale Rocket Society would become the Reaction Research Society to encompass more aspects of propulsion than rockets.

RRS founder, George James, with his “Slim Jim” rocket

These RRS members took their passion for rocketry and science sharing it with other like-minded people ultimately leading to vibrant society persisting for three-quarters of a decade. We hope to have a photo montage from the long span of our history on display.

We will have many great exhibitors including regional universities sharing their projects. Our public event will be a great event for all. Contact Frank Miuccio, our symposium coordinator, with any questions.

vicepresident@rrs.org

April 2018 meeting

The RRS held its monthly meeting on April 13, 2018 at the Ken Nakaoka Community Center in Gardena. We had a full agenda with the most important item being the 75th anniversary RRS symposium that is coming in only 8 days. We had a prompt start at 7:30pm with Osvaldo calling the meeting to order and giving the reading of the treasury report. We had a full attendance including our new RRS members, Jack, Dylan, Connor, Cooper and Byron from the former Chaminade High School rocketry club. They have been very busy with their solid rocket project. We didn’t have time to add their progress to our agenda, but we hope they’ll give an update at the May meeting.

Bill Janczewski and Chris Lujan just before the April 2018 meeting

The first agenda item discussed the work done by the Aerospace Corporation of El Segundo, California, on March 26th and 27th at the RRS MTA site. RRS member and Aerospace Corporation employee, Drew Cortopassi gave an excellent summary of the work. Aerospace Corporation’s experimental work was a success and we hope that Aerospace may return to use our site to advance their designs. Aerospace Corporation is one of our exhibitors and presenters at the meeting. A fuller discussion of their rocket testing at the RRS MTA will be given at the RRS’s 75th anniversary symposium, next Saturday, April 21st.

Aerospace Corporation tests an experimental solid motor design at the RRS MTA, 3/26/2018.

The next agenda topic was discussing the results from the launch event held last weekend with Florence Joyner Elementary School with the LAPD CSP program. Frank gave an excellent summary and Osvaldo discussed a theory explaining the odd bending of each alpha rocket found at the event. Most alpha rockets come down nearly vertically and burying themselves straight into the hard dry lake bed. At the launch event of April 7th, nearly all of the rocket propellant tubes were bent. Typically, this only happens if the rocket strikes a rock beneath the surface, but it is quite uncommon. Osvaldo’s invention of the Rockextractor proved to be a swift tool for reclaiming found alpha rockets.

Osvaldo’s newest invention, the Rockextractor

As a side note, Frank had mentioned that the USC short film “Rockets in the Projects” covering the November launch event with Grape Street Elementary class and the LAPD CSP program will be screened with other short films at Annenberg Hall on the campus of USC on Wednesday, April 18th. Seating is very limited so those interested in seeing the film should act quickly.

The third agenda topic was about the RRS expanding its roster of licensed pyrotechnic operators (pyro-op’s). We have great support from our current pyro-op’s but the society would benefit from having more. The RRS will be building a training manual that includes the materials mandated by the California Fire Marshal’s office to attain a license in rocketry. This tool will be an effective study tool for members looking to become licensed pyro-ops. At the very least, the training helps spread safe practices in the society. Given the limited time we had at this month’s meeting, we agreed to discuss this topic further at the next month’s meeting in May.

RRS pyro-op manual and training guide

The fourth agenda topic was something that Larry Hoffing discovered. The 2-bit Circus Foundation is a non-profit educational organization dedicated to the next generation of inventors to advance environmental stewardship and spur community engagement. The 2-bit circus has a futuristic arcade in downtown Los Angeles and has reached out to the RRS to be an exhibitor at their next event in Hawthorne, California. The RRS was supportive of this idea and once more details become available we will find a few members to attend the exhibition to help us reach more people at this event for STEAM (Science, Technology, Engineering, Art and Mathematics) education which our shared passion.

Two Bit Circus Foundation – STEAM education

The fifth agenda topic briefly discussed an idea that I have developed a second-stage design that fits with the RRS standard alpha payload tube. With a short segment of 1-1/4″ PVC tubing turned down to fit inside the 1.75″ OD payload tube and machined PVC end cap, a second stage motor with a graphite nozzle can be fired atop of the micrograin booster. A short length of Type-1 PVC round stock was donated to the RRS by Industrial Plastic Supply Inc. of Anaheim, California. There are many plastic suppliers, but not many that offer such a range of plastics in small quantities better suited for experimenters and hobbyists with modest personal budgets. I happily recommend them to all.

Industrial Plastic Supply Inc. – Anaheim, California

An interstage piece is necessary to trigger the second stage after a set time delay. I have designed an umbilical connector piece that uses a 3.5mm audio plug and panel-mount jack as a switch.

3.5 mm audio jack, panel mount

To internally mount the switch at a shallow angle for easy extraction of the plug as the alpha rocket lifts away from the launch rack required a unique plastic piece that Richard Garcia was able to 3D print for me in plastic. The fit check was a success so now I have to get the connector wired and mounted.

two of the umbilical jack mounts, plastic nozzle puck in the foreground

The solid motor grain itself was thought to be simple rocket candy, but other solid propellant types could be tried. Chris Lujan offered to pour a second stage grain for my design. Richard Garcia also offered to make his next motor grain to fit in this standard payload tube size. I have designed most pieces, but some aspects of this design need more work and testing. The RRS would like to encourage our members and our partner organizations to design and fly payloads with our standard alpha rockets which are easy to produce. Time was short so this topic was also tabled for the next month’s meeting as this work evolves.

RRS standard alpha, second stage assembly (work in progress)

The sixth agenda topic similarly had no real time to get into the details. The quarterly progress report of the SuperDosa project had only the RRS ballistic evaluation motor (BEM) to discuss. This workhorse tool will help the RRS accurately determine burn rate with variable nozzle puck sizes. Richard Garcia did turn out a basic set of graphite puck nozzles for the BEM.

RRS BEM graphite nozzle pucks, courtesy of Richard Garcia

The cylinder piece is with Osvaldo once he can find time to machine the bore and pressure ports. The top and bottom plates will be made soon by CNC Specialty Machining of Huntington Beach. This is the same machine shop that did a quality job with milling the S-type load cell adapter blocks for the RRS horizontal thrust stand. Thanks to Matt Moffitt of CNC Specialty Machining which is soon to relocate their business in Huntington Beach next month.

RRS ballistic evaluation motor design concept

The last agenda topic was the last preparations necessary for the RRS symposium coming next Saturday, April 21st. This event will easily be larger than last year’s event with over 400 Eventbrite reservations made just before the meeting. We have a longer list of speakers including new participants such as NASA Goddard Spaceflight Center’s (GSFC) Wallops Island Flight Facility (WFF) in Virginia. We will need all of our members to help us support this event. Please spread the word!

There will be a lot of work in setting up the night before. Members are encouraged to come help set things up at 7PM on the Friday night beforehand, April 20th. Contact Frank Miuccio who is our symposium coordinator if you would like to help.

vicepresident@rrs.org

The RRS meeting went out to the exhibition hall of the Ken Nakaoka Community Center in Gardena. The RRS will have the whole center for our public event and we hope everyone can come. Frank will send me the final agenda with the speaker list and the presentation times. This is an all-day event, but consult the RRS.ORG website for updated information. I plan to make a posting for the RRS symposium soon.

The meeting adjourned as the Ken Nakaoka Community Center closed. Osvaldo did some work for our new members with a clamping assembly to hold their rocket casing in their own horizontal thrust stand to test their full-sized boosted dart motor. Although independently conceived, this work nicely fits with the SuperDosa project and the RRS is glad to have another project to help advance the work of the society and our members.

RRS members stand outside of the Ken Nakaoka Community Center after the meeting with the horizontal thrust stand

If there is anything I have missed or misstated, please email me:
secretary@rrs.org

Our next meeting will be Friday, May 11, 2018. Please come as we will have much to discuss after the symposium and plenty to do in this summer of our 75th anniversary as a society.