October 2021 Virtual Meeting

by Dave Nordling, RRS.ORG


The Reaction Research Society held it’s monthly meeting by teleconference on Friday, October 8, 2021. Some of our members were on travel, but the those in attendance were able to discuss several important issues.

The USC RPL static fire event on 9-26-2021 was safely conducted but ended in a explosion and fire which was ably contained. This was a good example of careful preparations and good management of the people present for the event. A firing report has been posted for this event. Osvaldo Tarditti was the pyrotechnic operator in charge that day.

UCLA had requested the use of the MTA on 10/16/2021 for their next liquid rocket engine test. The MTA was already reserved for Bill Claybaugh’s solid rocket flight that same day and in the days leading up to the event. Dave Nordling was the pyro-op in charge, A firing report for this event will be posted,

UCLA is planning to hold their conceptual design review (CoDR) on 10/22/21 for the next iteration of their liquid rocket. RRS members Dave Nordling and John Krell plan to attend.

Wolfram Blume was on the call and said he was eager to return to the MTA for a second flight attempt of the Gas Guzzler ramjet. With the summer heat gone, he hopes to return at our next launch event which is still being planned. It is hoped that the society can continue their streak of having at least one MTA event per month as we have done since the start of 2021.

The restroom container was purchased and brought to the Compton Airport for interior construction. This 20-foot high cube has a 9.5 foot ceiling and should be able to have two individual rooms with toilet and sink, one of these to have a shower stall. Osvaldo had drafted a floor plan and this was approved by the council. The society will be meeting at the Compton Airport on Saturday, October 23rd, for a late morning barbecue and an in-person discussion of the materials needed to get the restroom interior built. All members are welcome but please notify Keith, Wilbur, Xavier or Dave Nordling if you’re coming as they have access to the airport.

RRS containerized restroom awaits interior design and build

There was some discussion about the septic system and leach field. It is important to maintain an appropriate distance from any nearby water wells, one of which is on Polaris Propulsion property. Sufficient clearance exists based on measurements made and EPA guidelines. The leach field will be positioned to drain away to the north.

The society is considering buying a concrete septic tank but RRS member Wilbur Owens may have a plastic septic tank already available for the society. Some members feel a concrete septic tank will last longer and be less likely to leak. The council is still debating this feature and should render a decision soon.

The society also discussed the water supply to the restroom container and the supporting structure needed to hold a tank on top of the container. There are many important facets to this infrastructure addition which must be weighed carefully.

Nominations for RRS executive council offices will be held at next month’s meeting, November 12th, 2nd Friday of the month at 7:30pm. An election chairman will be selected beforehand and this person must be an active member not holding office nor running for office. A special email address will be set up for the election chairman to gather votes from our active administrative and lifetime members. Results to be announced at the December 10th meeting and new terms to start January 1, 2022.

For any questions, please contact the RRS secretary.

secretary@rrs.org


MTA launch event, 2021-07-17

by Dave Nordling, Reaction Research Society


The UCLA Project Prometheus had reserved the RRS MTA for Saturday, July 17, 2021, for another round of static fire testing of a nitrous oxide hybrid motor on our vertical test stand.  Dave Crisalli was the pyrotechnic operator in charge for that day and recorded the successful static fire.  The footage will be posted on the society Instagram page soon.

This summer semester test would demonstrate UCLA’s student designed and built custom hybrid motor.  Average thrust was around 300 lbf with a maximum value of 349 lbf.  Total impulse recorded was 2044 lbf-sec (in the M-motor range).  UCLA shared a few pictures from the event.

Success on the stand…
…starts with good testing in the lab

This was another great example of a university team success thanks to careful design, lab testing, training, planning and smart, in-the-field engineering.  The RRS is glad to offer our facility and technical advice.  The RRS looks forward to working with UCLA again soon.

For teams seeking to schedule the use the RRS MTA, please contact the RRS president, Osvaldo Tarditti.  Always include a full project description such that the society can accurately evaluate your request.

president@rrs.org


June 2021 Virtual Meeting


by Keith Yoerg (RRS Secretary)


The latest meeting of the Reaction Research Society took place last Friday, June 11th and had 19 attendees – including a guest presentation from the Clarkson University Rocket Club. We kicked off the meeting saying vitrual hello’s and catching up on personal updates – Dimitri is safely in beautiful Alaska but will be down to visit California and may attend an MTA event if one is hosted.

Screenshot of discussion during the monthly meeting

RECENT & UPCOMING MTA EVENTS

The group kicked off society business with Dave Nordling telling us about the highlights from recent events at the MTA – including liquid and hybrid rockets from the UCLA rocket teams. More details are available in the post from Dave here.

Dave also re-iterated his desire that the Reaction Research Society host at least 1 event at the MTA every month, and asked whether other members were interested in attending an event on Saturday, June 19. A few members expressed interest – and Osvaldo agreed to prepare a few Alpha rockets for Dave to possibly launch. The weather is forecast to be 111 deg Farenheit in the desert this weekend, so anyone attending will need to bring lots of water, sun protection, and other preparations to beat the heat!

GUEST PRESENTATION – CLARKSON UNIVERSITY ROCKET CLUB

David Nagy, Benjamin Ellis, and Tyler Brooks from the Clarkson University Rocket Club were our guest presenters for this month. The club is brand-new (it became active this year!) and these students are working to turn it into a fixture at the university in northern New York state. They are currently in the process of soliciting faculty support, building a composites lab, and procuring equipment to get the club off the ground

Clarkson University Rocket Club members working on building their high-power fiberglass rocket

David, the president of the team, has some previous rocket experience with both high power and liquid rockets – including a 9.5 kN pintle injector rocket engine. The team is currently building their own fiberglass, high power rocket from scratch which they plan to fly on a commercial, CTI 75mm solid rocket rocket motor. This scratch build is not only helping them build out their workspace to do filament winding and carbon fiber layups – they also intend to fly a 3D printed avionics bay with an avionics board designed from scratch. They hope to use the lessons learned from this project to inform work on future, more complicated projects.

David, Benjamin, and Tyler showing designs for a future planned project – a liquid bi-propellant rocket

The Clarkson University team solicited advice and opinions on their plans for a liquid bi-propellant LOX/Ethanol rocket. The design is currently in its early stages but the specifications are to have 500 lbf thrust, with a fuel-centered pintle injector. They predict that with a 15-second burn time they could build a rocket that would reach an apogee of 35,000 ft. Several RRS members gave their opinions on this design and other challenges involved with starting a fledgling club from scratch. I know many of the members are excited to see what these students will do!

WIRELESS LAUNCH CONTROLLERS

We decided to do a short recap of our recent discussions and presentations from vendors of wireless launch controllers. Dimitri offered to let us use his Cobra system when he returns to California in July, and there was talk of attempting to launch 16 low-power kits at the same time to further test/prove the efficacy and safety of the controllers. RRS members seemed generally impressed with the presentation from Cobra last month, but concern was raised that it’s not a necessary expense. There was a bit of a debate about whether laying and coiling several hundred feet of igniter wire is triple-digit changes the calculation, but Osvaldo has graciously offered to be the cable spooler for any project that requests it.

MTA PERMANENT BATHROOM STATUS UPDATE

The Executive Council updated the membership on progress with the permanent bathroom. After a meeting in Downey earlier this month, it was agreed that RRS member Wilbur would build the container in the LA area and then transport it out to concrete pads which will need to be built at the MTA site (along with a septic solution). The first step of this process has been completed – and the RRS has placed a down payment on a 20 foot “high-cube” shipping container to be used for the bathroom. A schematic of the container is shown below.

The current plan is still to build 2 of these 20-foot containers. Water will be supplied by a well and stored in a tank installed on top of the bathroom or a nearby storage container. The bathroom facility is planned to be located southeast of the Dosa building, alongside the existing storage containers.

NEXT MONTHLY MEETING

The next RRS monthly meeting will be held virtually on Friday, July 9th at 7:30 pm pacific time. Current members will receive an invite via e-mail the week of the meeting. Non-members (or members who have not received recent invites) can request an invitation by sending an email to:

secretary@rrs.org

istanbul escort