Tag Archives: University of Michigan

80th Anniversary RRS Symposium on April 15, 2023

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by Dave Nordling, President, RRS.ORG

The Reaction Research Society is proud to announce our 80th anniversary symposium to be held at the Mary Star of the Sea High School in San Pedro on Saturday, April 15, 2023, from 8am to 5pm. We have 15 speakers and over 20 exhibitions which is on par with our last symposium four years ago before the pandemic.

Mary Star of the Sea High School is at 2500 N. Taper Avenue in San Pedro, California, 90731.

Gates will be open at 7:15AM for exhibitors to set up. The event will start at 8:00AM sharp.

The gymnasium will hold our exhibitors. Room 108 will have the presentations. Seating is limited. All speakers must be present at least 15 minutes ahead of their speaking time.

Below is a tentative list of our speakers. The list is subject to change without notice.

  • Opening and first session, 8:00-8:30am, Dave Nordling, President, RRS.ORG
  • 8:30-9:00am, by remote, Ichiro Ausin, et al, University of Michigan
  • 9:00-9:30am, Dr. Steven Chambreau, Air Force Research Laboratory, Edwards AFB
  • 9:30-10:00am, Eric Schmidt, Exquadrum Inc.
  • 10:00-10:30am, Mark Ventura, Ventura Energy Systems
  • 10:30-11:00am, Dean Theodor, Federal Aviation Administration
  • 11:00-11:30am, Julia Woomer et al, USC Rocket Propulsion Laboratory
  • 11:30-12noon, Blake Spahr et al., UCLA Rocket Project
  • Lunch Break 12:00-1:00pm
  • 1:00-1:30pm, Dr. Frank Chandler, California Polytechnic Pomona
  • 1:30-2:00pm, Dr. Jerry Fuller, Aerospace Corporation
  • 2:00-2:30pm, Tre Willingham et al, Compton Comet
  • 2:30-3:00pm, Caleb Phillips and Vijay Mepani, CALFIRE
  • 3:00-3:30pm, Jack Caldwell et al, Caltech
  • 3:30-4:00pm, Darrell Chua et al, UC San Diego SEDS
  • 4:00-4:30pm, Patrick Finley, Lander Challenge
  • Closing and thanks, Dave Nordling, President, RRS.ORG

Free tickets on Eventbrite are still available. Many thanks again to Peter Thorpe for his background artwork and to Mary Star of the Sea High School in San Pedro, California, for graciously hosting this event. Food/drinks/snacks will be provided by Mary Star High School.

For questions, please contact our vice president, Frank Miuccio.

vicepresident@rrs.org

Our April 14th monthly meeting will be also held at the Mary Star High School auditorium at 7:30pm. We will discuss a few items of business but largely we will be preparing the site for the next day.

Our latest flyer design for the 80th anniversary RRS symposium
Rough floor plan of the exhibition in the Mary Star High School gymnasium
Laminated impulse scale charts from the RRS will be available for purchase at the symposium for $10 each. Proceeds go to the society general fund.
Membership applications will be available at the symposium for those wishing to apply for associate membership. $20 per year for students. $40 per year for all others.

We look forward to celebrating amateur rocketry with the community.

August 2022 monthly meeting

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by Keith Yoerg, Secretary, Reaction Research Society

The RRS held its monthly meeting on Friday, August 12, 2022, by teleconference accutane starting 7:30pm. The agenda was below.

  1. Review of recent MTA/rocket events, reports are posted on the website
    • 7/9 & 7/16: Work parties at MTA to install bathroom container (video Keith made of the delivery with the drone)
    • 7/21: Aerospace Ccorporation intern launch event
    • 7/25-7/31: Michigan liquid engine hot fire test campaign
  2. Upcoming MTA events
    • Bathroom work to continue in September
    • Other planned events are
      • USC RPL pad work
      • USC propellant sample testing
      • and a USC RPL static fire
      • Bill Claybaugh is preparing a ambien new pad for launching heavier rockets from the MTA
      • Bill Ca;ybaugh will launch his six-inch rocket from a new rail launcher
  3. Social media milestone reached: 1,000 Instagram followers
  4. Preferences for future monthly meetings:
    • Monthly in-person (w/ zoom option) is something desired by many
    • In-person 4x per year (zoom other months), some supported the idea, other thought it may be confusing
    • Other ideas included meeting at a new location at the Compton Airport front office
  5. Other items addressed by the Executive Council this month:
    • Looking into society workshop/workspace at the Compton airport
    • Addition of more/semi-permanent high power launch pads
    • RRS membership has surpassed 2021 levels
    • Progress still being made on website update, hope to show something next month

Our next meeting will be September 9th. Contact the RRS secretary for details.

The Reaction Research Society reaches a milestone in our social media campaign.

MTA Firing Event, 2022-07-31

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by Dave Nordling, President, Reaction Research Society

The University of Michigan came to the Mojave Test Area for another static order phentermine fire campaign starting Monday, July 25th and ending July 31st. Pyrotechnic operators, Jim Gross, Osvaldo Tarditti and myself supported this protracted campaign in the July heat. The weather was challenging during that week with few heat-related problems other than slow progress which is understandable given the conditions. New RRS member, Rushd Julfiker, and long time member, Jim Gross, assisted me in the cold flow and hot-fire testing. MASA’s academic adviser, Professor Mirko Gamba was also present at the MTA for the days of cold flow and hot-fire testing.

University of Michigan held a Test Readiness Review on Sunday, 7/17/2022, with RRS members present. Many good questions were raised but few corrections were needed. MASA proceeded with packing and departed campus cytotec for the MTA on Friday, 7/22/2022.

University of Michigan first day at the Mojave Test Area

The team arrived at the MTA on Monday night (7/25/2022) and began to unpack their gear and assemble the mobile test trailer. Leak checking went more smoothly due to design improvements. Problems with the igniter channel would prove to be a recurring concern.

Initial setup of the mobile trailer at first arrival.
Attaching frequently used tools by retractable tethers means never hunting for the right wrench again. Genius.
Hewlett-Packard film crew prepares to have interviews with the students.
Control trailer operations leading up to test.
A clean injector ready to be installed.
Fuel transfer operations before next test.
230-liter cryogenic liquid cylinders from Linde.

On Friday (7/29/22), gas bottles and cryogenic liquids were recieved from the supplier. Delays in receiving these consumables allowed sufficient time to verify systems were ready. MASA achieved significant progress towards hotfire after completing four valve timing coldflows and one abort test. Analysis of the data from our tests in preparation for hotfire tomorrow.

The RP-D2 engine sits on its thrust stand.
University of Michigan’s mobile test trailer beside the vertical test stand

Saturday (7/30/22) was the first attempt at hot-fire which was unsuccessful due to an igniter failure. The cause was traced back to an intermittent problem with the switch in the junction box. The prior igniter test demonstrated the igniter would fire in the cold flow conditions the day before. Comparing data sets, the team found that a simple verification of continuity in the voltage data stream during the countdown would safely identify a failed igniter firing circuit and allow a safe abort if it were to repeat.

RRS members Jim Gross and Rushd Julfiker examine the setup before the next test attempt.

In the last hour of the last day (Sunday, 7/31/22) of the campaign, MASA completed a successful 1 second hot-fire of the 2,000 lbf RP-D2 engine. The chamber and injector remained intact and the system safed itself properly.

Screenshot from the 1-second firing of RP-D2 as seen from the Garboden bunker

After examining the data, pressures were significantly off from the expected profile, but the engine passed the visual inspection After further consideration, the team opted not to proceed with a longer 4-second burn due to the uncertainty about our data values and pressure drops seen from hot-fire. MASA would conduct a more thorough examination of the data and hardware back at the university.

The MASA team began cleaning up the test site on Sunday night and continued throughout the night to prepare for the 1800 mile jouney home. University of Michigan was extremely happy with the result of their campaign and were grateful to our pyro-op’s and membership that supported every day with the MASA team.

The RRS was glad to provide our testing site, resources, experience, labor and insight to this successful testing campaign.

For inquiries about using the RRS Mojave Test Area, contact the RRS president.

president@rrs.org