Tag Archives: model rockets

MTA Launch Event, 2023-06-10

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by Dave Nordling, President, RRS.ORG

The Reaction Research Society held a launch event at our Mojave Test Area on June 10, 2023. We had two groups holding separate events that day.

Operation Progress and the Los Angeles Police Department’s Community Safety Partnership held an event with student built “Big Bertha” rockets. Our society treasurer, Larry Hoffing, was the pyro-op in charge. Our vice president, Frank Miuccio, was supporting the event in uniform.

Everything went well as we had some clouds, low winds and mild temperatures for June. A group photo under the MTA arch was a nice finish to a great event. We thank Operation Progress and LAPD and the volunteers who helped make the event a success.

The RRS MTA’s latest improvement, our containerized restroom got its first live test and performed well. Final fixes to be completed this year.

The second event we had at the MTA a little further north was the UCLA Capstone project. Every year before graduation, some UCLA students build custom model rockets with different objectives. They used F and G motors so they still qualify as model rockets. RRS secretary, Joel Cool-Panama, and myself supervised the event with Professors Mitchell Spearrin and Bret Lopez.

All teams were able to launch, sometimes multiple times. UCLA teams recorded their results as part of the senior class. UCLA was well organized and is very easy to work with. We hope to see them again next year at the MTA.

While Joel and I observed UCLA’s operations, we took some time with a shovel and rake to remove the large amount of brush that has grown around the MTA launch and work areas. This year’s abundance of rain was a God-send to many throughout the drought-racked state od California. To the society, it served as a bold reminder that brush clearance is and will be a frequent need to safely continue our operations.

The large vertical test stand with its concrete flame trench has been idle for several years. The Compton Comet team hopes to conduct a static fire test some day soon. After some surveying of the area’s worst spots for brush, Joel decided to clear out the flame trench. I was getting winded just keeping up with loading and carrying away the removed piles. Joel is a good worker and has made his mark this year at the society and serving as an officer on the council.

The last photo is of the 2023 RRS executive council, all of whom attended and participated at this June 10th event.

Our next event will be in July. This could be Saturday, July 22nd, if I get more confirmation from those wanting to launch. All launch and test requests must be made to the RRS president.

president@rrs.org

April 2023 meeting

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by Joel Cool-Panama, Secretary, RRS.ORG

The Reaction Research Society held its monthly meeting at the Mary Star of the Sea High School, 7:30 PM PST. We went over the agenda quickly as the symposium preparations for the next day were underway.

Agenda topics of the meeting were:

  • Symposium in preparation
    • Model rocket flights at Mary Star High School were not approved
    • Mark Holthaus of FAR confirmed to attend
  • RRS charitable trust status being examined
  • Jim Gross’ eletrical firing video to be hosted over Zoom
    • permission granted for educational purposes
      • DVD will be donated to the RRS
  • RRS invited to LMU’s Engineering Design Showcase
    • Dave plans to attend
  • Pyro-op recommendation letters (Larry)
  • UCLA Capstone and Frank school launch both on June 10 at MTA
  • Bill Claybaugh next launch on Saturday, April 22nd

Current Events

The first topic of discussion at this month’s meeting was that LAFD did not approve the model rocket launch at the RRS Symposium. Paper rockets will be flowninstead.

In addition to this good news, it was also revealed that some additional attendees would be present, in addition to those already known. These include Mark Holthaus of FAR, as well as the Lander Challenge project. Unfortunately, it was also revealed that Northrop Grumman had pulled their attendance from the event.

The topic of the RRS’ charitable trust status was also discussed. It seems that California has changed some annual requirements for renewal. The RRS intends to seek answers regarding the changes. The RRS is a registered 501(c)3 educational nonprofit group in California.

There is some good news for those seeking their pyro-op licenses, though. Jim Gross has announced that he will allow his video watch meeting to be hosted over Zoom. Several members are seeking their Class 2 license and need letters of recommendation for their applications..

Continuing in the vein of pyro-op recommendation letters, some have had questions about the standards that license holders use to write them. The topic has been tabled until the next meeting on May 12th..

In regards to public events, the RRS has been invited to Loyola Marymount University’s Engineering Design Showcase event, set to occur on April 28th. RRS President Dave Nordling is set to attend, but the event is open to the public, so any society member may attend if they are so interested.

Bill Claybaugh has a launch event planned at the MTA next Saturday and it is on track. It is expected that his six-inch diameter solid rocket will reach an altitude of 69,000 feet and be recovered within 5 nautical miles of the launch site, but there are some weather concerns regarding the launch day. It was also mentioned that air traffic control wants to have a single point of contact from all waiver holders. For launches from the RRS MTA, this will be the President.

In additon to Bill’s launch, there is also a UCLA launch planned for June 10th. This is the senior capstone project for this year which will be F and G sized model rockets. Vice-President Frank Miuccio coincidentally also has a model rocket class on location that same day, so the two groups are likely to share the MTA.

The next society meeting will be on May 12th, 2023, at the Compton/Woodley Airport location. Contact the secretary for details.

MTA Launch Event, 2022-07-21

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by Chris Kobel and Larry Hoffing, Reaction Research Society

On Tuesday, July 19, 2022, 31 interns from various departments within Aerospace’s Engineering Division gathered in the Building D8 cafeteria to construct mid-power rocket kits. The kits were based on the LOC Precision company’s HyperLOC-160 model kits which utilize a 1.6” diameter airframe, plywood fins, and a 29mm motor mount, along with other requested custom modifications.  Under the tutelage of Aerospace Corporation, Astrodynamics department retiree, Chris Kobel, along with his son James (both RRS members), VDID’s Isaac Goldner, Jeff Lang and his son Chase, and the Propulsion Science Department’s, Andrew Cortopassi (former RRS secretary and member), the interns successfully constructed the kits over a 2.5 hour period, while discussing various aspects of aerodynamics, propulsion, stability, recovery, and construction techniques.  A second session was held the next day for three interns who couldn’t make the first session.

                On Thursday, July 21, 2022, approximately 35 interns left Aerospace early in the morning on chartered buses and made the journey to RRS’s MTA facility in the Mojave Desert.  They were accompanied by the Aerospace Corporation build team, along with VDID’s Jerry Fuller and Sophia Martinez as well as Carah Fukumoto from University Relations and Recruiting.  The RRS treasurer, Larry Hoffing, acted as the Pyrotechnic Operator in charge for the event.

Under calm and clear skies, but with increasing temperatures reaching a high of 106 degrees Fahrenheit, approximately 45 flights were made, mostly successful.  A new 5-rail launch pad provided by Aerospace Corporation was paired with the RRS MTA’s Cobra Wireless firing control system to handle the rocket flights.  A few of the early flights indicated some slight instability which was addressed by adding ballast to the nose cones of the rockets (using desert sand!) moving the center of gravity (CG) forward to increase the margin of stability.  The sight of some rockets were lost as they departed the launch wires in a somewhat sideways direction out over the desert or on a direct trajectory towards a blazing sun. 

Jeff Lang and Chris Kobel with the five station launch rail system built by Aerospace

A demonstration flight of Aerospace’s C-LINK technology was marginally successful as the booster performed flawlessly, but the payload separated incorrectly and ended up powering into the ground. 

Following the launch activities, the interns were treated to a terrific launch at the Voyager restaurant at the Mojave airport, welcoming the cool air-conditioning and ice cold drinks. Overall, it was a long and hot day, but a very successful outing with an enthusiastic response from the interns.