The Reaction Research Society held another launch event with the LAPD CSP. This event was with the students of Boyle Heights. We had ten standard alphas launched into the blue Mojave sky that day including some model rockets made by Russell Hoffing and my grandson.
A lot of different groups came out for this launch event at the RRS MTA, 09-21-2019
We had students from the CSU Long Beach liquid rocket team come out to make some measurements for sub-system testing that they are planning at the RRS MTA this year.
CSU Long Beach inspects the vertical mounting structure at the RRS MTAModel rockets in the George Dosa building undergoing preparation for launchStudents from Boyle Heights get their orientation instructions at the RRS MTARRS events coordinator, Larry Hoffing; RRS VP, Frank Miuccio and RRS president, Osvaldo Tarditi
Returning RRS member, John Krell, had worked up two prototype instrumentation packages for flights in the ninth and tenth RRS standard alphas on that day. Both rockets were recovered and the results were impressive.
John Krell arms his payload integrated into one of two RRS standard alphas, 09-21-2019One of John’s prototypes survived the flight and is laid out on the table in the Dosa Bldg.John Krell examines the recovered SD memory chips to determine the flight profile from the RRS alpha. Over 100 G’s of acceleration at take-off max’d out the sensor!
Materials have been acquired to repair the adjustable rail launcher that was damaged in early August this year. Osvaldo has been busy at work on the repairs. The RRS has several facility improvement projects in the works and we hope to bring this rail launcher back to service soon for larger rockets (4 to 6 inches).
John will hopefully have a full report and an overview of his design. Both Bill Behenna and Brian Johnson are also working on their own instrumentation designs for the RRS standard alpha. With this recent progress, this should help our others members take better data.
Still photo from RRS alpha #3 of 10 launched at the MTA on 09-21-2019.
We’ll discuss more of the results of this event in detail at the next RRS meeting on October 11, 2019. The RRS meets every 2nd Friday at the Ken Nakaoka Community Center in Gardena, California. Stop in and see how things went.
The Reaction Research Society (RRS) met on Friday, September 13, 2019. We had several new people come out to visit including the CSU Long Beach liquid rocket team. They were coming to learn more about the society and our resources at the Mojave Test Area (MTA).
The RRS had a special occasion to celebrate at the meeting which we did with pizza. The RRS now has three new licensed pyro-ops, Osvaldo Tarditti, Larry Hoffing and Dave Nordling. This will help us a lot in holding more events at the MTA.
Abel, Wally, Tustin and Hunter from the CSULB Beach Launch Team, enjoyed our celebration and stayed for the meeting.
Since we had so many new people coming to the meeting, we decided to make introductions and share some of the stories and latest projects before getting to the meeting agenda topics.
Wolfram Blume, new member to the RRS, discussed his plans to static fire a gasoline fueled subsonic ramjet
New RRS member, Wolfram Blume, came to the meeting tonight to discuss his plans to build, test and ultimately fly a gasoline fuel ram-jet called the Gas Guzzler project. He’s been working on this project since 2011 and he presented the RRS president with his test request to conduct a static fire test along with many details of his initial designs. The RRS has not tested a ramjet in many years and this will be a very interesting project as it develops.
Waldo Stakes, RRS member, explains his latest progress with the steam rocket he’s been working.
Waldo Stakes came to the meeting to share with the society his latest progress with a steam rocket he’s been working on for Mad Mike Hughes. Waldo’s projects are always fascinating as he’s worked with a lot of different groups over the years in racing and in rocketry. He’s also been working with Compton College on the planning of their large liquid rocket. The RRS is also glad to be a part of Compton College’s ambitions to build a liquid rocket.
Mario and Oscar of Compton College with RRS member, Kent Schwitkis listen to Bill Behenna present his latest avoinics payload project to be built for the RRS alpha.
RRS member, Kent Schwitkis and a couple of his students from Compton College came to the society meeting. There are many bright students at Compton College interested in working with the RRS and we have already began to assist each student with tasks specific to projects their working at the college.
Bill Behenna shows his latest prototype of an alpha payload to measure acceleration and barometric pressure.
We decided to showcase our membership project first before beginning our agenda which was a very good idea. Bill Behenna has been hard at work on his avionics payload to be built to fly in the many RRS standard alphas we have at most of our launch events.
After calling the meeting to order and the reading of the treasury report, the RRS began our September meeting agenda.
(1) Next Launch Event at the RRS MTA with LAPD CSP and Boyle Heights
The RRS has finished with the last classroom presentation of the series. The students have painted their rockets and are ready for the final launch day, next Saturday, September 21, 2019. After propellant loading, the RRS will be ready to receive our next group to watch their handiwork take flight in the desert.
(2) RRS facility improvements
Osvaldo has been leading the task of evaluating facility improvements to the RRS. The main improvements under consideration are (1) improving our restroom facilities at the MTA and (2) replacing the old blockhouse at the MTA. Osvaldo has made some drawings of the new restroom facilities and is discussing the details with a vendor to get a quote.
In early August, our large adjustable rail launcher was damaged in a failed launch attempt of a large solid motor. Osvaldo began repairs and hopes to have the box rail system restored soon.
The RRS MTA site was also the victim of theft of many things from the George Dosa building. Security at our test site is difficult given its remote location. Several suggestions were made including adding cameras, improving our locks and doors, making opaque window inserts for the building, and simply being present at the site more often. The RRS has been the victim of theft before, but it is something that is never easy to recover.
(3) 2020 Constitutional Committee report
The committee was not able to make their report this month. Several factors have contributed to this delay over the summer. The committee will make its presentation to the society at the next meeting in October.
(4) Society votes on holding the 2020 RRS Symposium
After some discussion last month, the society decided that we will in fact hold the next RRS symposium in the Spring of 2020. Given the increasingly successful events we’ve had since 2017, and the many people who have encouraged us to keep this annual event, the administrative membership voted in favor. Frank Miuccio will again be our symposium coordinator and the RRS will be reaching out to presenters and exhibitors very soon. Our next order of business will be setting the date which is likely to be in the month of April.
(5) RRS to present at the CATIE conference at Antelope Valley College
Dr. Khalil Dajani of CSU Long Beach has invited the RRS to be one of the presenters at the Space Responsiveness Workshop and Exhibit at Antelope Valley College at the Hellenic Center in Lancaster, California. The 2019 California Aerospace Technologies Institute of Excellence will be held on Wednesday, September 18th where members from industry and the government will hear our presentation introducing the society and our capabilities at the Mojave Test Area. We hope to make some great contacts at this event and begin some new partnerships..
The RRS has focused a lot on educational and project activities, but we don’t often plan simple gatherings for fun. Larry had talked about having the RRS visit Mt. Wilson as a private group. At the meeting, we also talked about having a simple barbecue at the MTA as was done in times past. We plan to revisit this discussion again. Other members are welcome to share their ideas.
(7) RRS history project – Garboden archives
Lifetime member, George Garboden, has many boxes of papers and reports from the RRS in his possession that he would like to pass back to the society for archival. In support of the RRS history project, the society is always glad to get articles, clippings and any kind of archival materials and make them more available to our membership. Frank, Larry and I have been working on the logistics of getting a new storage location, but the most important step is finding the time to carefully make quality scans.
(8) Social media improvements
Alastair Martin announced the next pending episode of his podcast, Rocket Talk Radio. Other fellow RRS members, Dave Nordling and Richard Garcia, will take part in the next installment of the “Before SpaceX” series on September 28th. In this episode, we will be interviewing Jim French. Jim has had a long and interesting career as a rocket development engineer for the H-1 and F-1 engines at Rocketdyne in the 1950’s and later at TRW in the 1960’s with the Lunar Descent engine during the heyday of Apollo. His book “Firing a Rocket Engine” is available on Amazon.
“Firing a Rocket” by James French
Jim French also worked for a startup company called the American Rocket Company (AMROC) in Camarillo in the late 1980’s and early 1990’s. We hope to have a great conversation and learn a lot about his experiences at this commercial space company.
(9) Memories of George Dosa
As our last order of business, we shared with the society that we lost one of our oldest and most beloved members of our society. In our long history, George Dosa, had a profound impact on the society and many of our past and present members.
The RRS adjourned our meeting after a long series of very interesting discussions. We are thankful to all for coming and we will be holding our next monthly meeting, October 11, 2019. If there are any changes or additions to make to this monthly report, please notify the RRS secretary.
Dave Nordling, Secretary, Reaction Research Society
The pioneering theoretical and experimental work
stromectol that formed the basis for the modern practical liquid rocket was published 100 years ago today.
A Method of Reaching Extreme Altitudes, by Robert Hutchings Goddard (1882-1945), was published by the Smithsonian Institution, on May 26, 1919. Considered the father of American rocketry, Goddard developed the theory of his work while at Princeton University in 1912-1913 with experiments undertaken during 1915-1916 at Clark University.
This 79-page modafinil get paper described a series of practical experiments using nitrocellulose “smokeless” powder combusted within an enclosed chamber through a de Laval nozzle both in the ambient environment and under vacuum conditions. This paper also included mathematical derivations to develop a theory of rocket action taking in account air resistance and gravity with the goal of determining the minimum initial mass necessary for an ideal rocket to deliver a final mass of one pound to any desired altitude.
In his research, Goddard sought to devise a practical means to send instruments above the range of sounding balloons (about 20 miles) to explore the upper atmosphere. What makes this work fascinating is how much was known at the time of his paper’s publication versus how much was yet to be learned and become common knowledge in our time. Very little was known about the nature of the upper atmosphere in 1919. Yet, the basic concept of a rocket with a restrictive nozzle was known for centuries in the Chinese civilization and later in Europe klonopin 2mg with the 19th century British Congreve rockets.
In this scientific work, Goddard meticulously lays out his plan of research and the incremental progress he made to verify each of his claims. Most significant is his first conclusion on page 34 that his experiments in air and in vacuum prove that the propulsive force from a rocket is really based on a jet of gas having an extremely high exhaust velocity and is NOT merely an affect of reaction against the air.
Goddard’s work did not receive much funding during his lifetime. His work in rocketry even invited the ignorant criticism of the New York Times and others in the public which had a profound affect on Goddard in his lack of willingness to collaborate even until his death in 1945. In all fairness, it should be noted that the New York Times did see fit to offer an apology to Goddard 24 years after his death and only 50 years ago (in 1969) in the weeks before the Apollo 11 flight that landed the first two men on the moon by a multi-stage rocket operating quite well in the vacuum of space without a media for the vehicle to react against.
Goddard was awarded two patents in 1914, one for a multi-stage rocket and one for a liquid-fuel rocket. Considered an iconic work of 20th century science, all rocketry enthusiasts, students and professionals owe themselves the privilege of reading Dr. Goddard’s 1919 monograph which would lead to the first successful test of a liquid rocket flight in 1923 and the first successful liquid rocket flight on March 16, 1926 in Auburn, Massachusetts.
Goddard’s early discoveries included the determination that fins on a rocket by themselves were not sufficient to stabilize a rocket in flight. Goddard’s inventions included movable vanes to vector the rocket exhaust stream in flight and a gyroscope-based control system to effectively guide a rocket in flight.
Although relatively unappreciated in his home country, Goddard’s work was noticed by the Germans and in years later leading to their own rocket development program leading to the V-2 ballistic missile used to terrifying effect during the latter portion of the Second World War. modafinil without prescription During the Cold War, the V-2 was the heritage of the first rockets by the first space-faring nations.
