This is where we’ll be keeping all the posts we’ve put up with any media in them. The most recent three show up complete and on the top. The complete list of links is at the bottom of the page.2019-05-26 22:25:18
Dave Nordling, Secretary, Reaction Research Society
The pioneering theoretical and experimental work 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 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 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.
Air & Space Magazine, The Misunderstood Professor
by Frank H. Winter, May 2008
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. During the Cold War, the V-2 was the heritage of the first rockets by the first space-faring nations.
Dave Nordling, RRS Secretary
For the third year in a row, the RRS held its annual space and rocketry symposium at the Ken Nakaoka Community Center in Gardena on Saturday, April 27, 2019. We had over 200 people come to share the event with us. This was slightly larger from last year’s 75th anniversary celebration which marked this event as a big success. We’re glad to bring our public audience new things to see at each of these events.
Our membership really delivered on setting up the ballroom for the event in record time. The RRS thanks our volunteer organization for donating their time in the night before and in the long day ahead.
The RRS was glad to welcome many of our returning presenters and exhibitors such as the Rocketry Organization of California (ROC), US Rockets, Aerospace Corporation of El Segundo, Northrop Grumman of Redondo Beach, USAF SMC Heritage Center, UCLA, USC RPL, UC Irvine, UC San Diego, Additive Rocket Corporation (ARC) and Bill Claybaugh’s Space Transportation Institute.
We had many new presenters join us for the first time such as AFRL Edwards AFB, Leo Aerospace and CSU Fullerton. We were also glad to have Spaceport LA, Columbia Memorial Space Center and Outside the Lines Arts Education join us in the exhibitors hall.
The RRS was glad to welcome several presenters from the local aerospace industry. Aerospace Corporation, a federally-funded research and development center (FFRDC), based in El Segundo and supporting mission assurance and research for the United State Air Force was a return visitor to our humble forum. We thank Dr. Christopher Zeineh for bringing another exciting current topic (MarsHop) in Aerospace’s research, this time with NASA and their Mars Exploration program.
Also, the RRS would like to thank Jacky Calvignac of Northrop Grumman Integrated Systems (NGIS) from their Redondo Beach office giving an excellent presentation on spacecraft refueling systems. Northrop Grumman (formerly TRW many years ago) has been a big supporter of Los Angeles community events and we are blessed to have them share their work with our public audience.
The Air Force Research Laboratory (AFRL) at Edwards AFB, CA, was another one of our featured presenters at the RRS symposium. The RRS thanks Nils Sedano and Phuoc Hai Tran for making the long journey from the high desert of Mojave to be with us and share the exciting research done at AFRL Edwards AFB.
Leo Aerospace, a Gardena-based start-up company, was another one of the RRS’s presenters at the symposium. Leo Aerospace founders, Abishek Murali and Dane Rudy, gave our audience an exciting description of their low-cost concept to sending cubesats to low-earth orbit. Their unconventional hybrid approach uses a hot air balloon to lift a small launch vehicle above most of the atmosphere then using a small rocket to reach space. The launcher concept is sometimes referred to as a “rockoon”.
Additive Rocket Corporation (ARC) of San Diego, California, made an excellent presentation of their patented approach to advanced rocket engine design through the amazing possibilities of 3D metal printing.
RRS member, Alastair Martin, was exhibiting his company, Production Tribe LLC, and WatchHollywood.TV. He was filming many of the presentations during the symposium. His latest project, Rocket Talk Radio, is a podcast program discussing current topics in rocketry and space exploration.
The Los Angeles Police Department’s Community Safety Partnership (LAPD CSP) were our honored guests and exhibitors in the main lobby. LAPD CSP helped the RRS in welcoming our visitors and showcasing the fun we’ve all shared. For almost two years, the RRS has conducted educational programs with local schools in Watts, Compton and others across Los Angeles. The “Rockets in the Projects” program continues to go strong with another program planned for this summer, and possibly again in the fall.
We also were glad to welcome Mad Mike Hughes and new member, Waldo Stakes, to the symposium for the first time. Mad Mike brought his latest manned suborbital steam rocket vehicle for display in the north parking lot of the Ken Nakaoka Community Center in Gardena.
The Titan rover team of CSU Fullerton had their rover on display with frequent demonstrations of its agility and ability to test technologies for future Mars and Moon exploration.
The RRS was glad to welcome back the Columbia Memorial Space Center of Downey, California. Similar to the RRS, they are an educational non-profit group working with local schools throughout the Los Angeles area.
One of our special guests at the RRS symposium was Deputy Fire Marshal, Ramiro Rodriguez of the California Fire Marshal’s (CALFIRE) office in Hollywood. Ramiro gave a great presentation to our amateur and professional rocketry audience on the subject of state regulations as they apply to our hobby and the licensing of pyrotechnic operators in the state of California. Ramiro has been very helpful with the RRS and is an advocate of rocketry in California. Ramiro was available to discuss licensing and permitting processes with our public audience throughout the day in the exhibition hall.
We had many university teams willing to share their latest success and challenges with their solid and liquid rocket projects.
The UCLA Rocket Project is growing strong thanks to RRS member, Dave Crisalli. UCLA had a lot of new liquid rocket hardware on display at the exhibition.
The United States Air Force was one of featured guests at the exhibition. Lt. Col. Porter of Los Angeles AFB was giving demonstrations all day to our public audience.
Next to Lt. Col. Porter was Karen Austin of the USAF Space and Missile Center’s (SMC) Heritage Center dedicated to showcasing the long history of the US Air Force and our national defense in space. Her presentation at the symposium on the US Air Force in Space was very well received. The RRS is very grateful to the USAF SMC at LA AFB for supporting our event.
The events at the 2019 RRS symposium were not limited to the exhibition hall, ballroom and lobby. We had several outdoor demonstrations of a pneumatic paper rocket launcher. This is always a big hit. The popularity was so great that the RRS had to build one of our own!
I have several more photos from other people who were kind enough to document the event. I would like to thank all who came to the event and hope we’ll see everyone back at our next symposium. The RRS was glad to welcome new members and returning members throughout the day. Some of our members traveled far to be with us for this special annual event. We were also glad to receive a few membership applications at the event. The RRS is glad to welcome new members anytime.
The RRS membership voted last year that we would not hold our symposium in 2020. We will be focusing on our current projects and saving our resources for an even larger symposium event in 2021. The RRS is glad to have had three solid years of the symposium and great support from our participants.
Our next monthly meeting of the RRS will be May 10th at 7:30pm, following our standard 2nd Friday convention. We meet at the same place, the Ken Nakaoka Community Center in Gardena. Please stop by if you’re interested in learning more. We’ll be discussing the symposium and the many projects we have in store for this summer.
The RRS is glad to announce our list of presenters at the 2019 Reaction Research Society Space and Rocketry Symposium on Saturday, April 27, 2019. This all-day public event will be starting at 8:45am, at the Ken Nakaoka Community Center in Gardena, California and run to 5pm. The community center is right next door to the Gardena Police Department.
Sessions will be 25 minutes each with a brief 5-minute question and answer period. We’re glad to have representatives from industry, federal and state government agencies and academia all present for this event. We’re also glad to the many exhibitors including Rocketry Organization of California, Spaceport LA, Aerospace Corporation and Additive Rocket Corporation joining us in the ballroom.
Breaking the list into two parts, the symposium continues into the afternoon. We have decided not to hold the panel session at the end as we were able to fill our roster quite easily. We’re very thankful to the many presenters able to come share their thoughts and ideas with our public audience.
The symposium as of this posting has 380 (free) tickets sold on Eventbrite. We expect to have the same great crowd as last year and hopefully more can share the event with us. This will be our last symposium for at least two years, so please come join us if you can. If not, you can always find us at the next RRS monthly meeting (May 10, 2019).
Ken Nakaoka Community Center
1670 West 162nd Street
Gardena, California, 90247
Come see what we have in store for 2019!
- 100 Years Ago: A Method of Reaching Extreme Altitudes
- 2019 RRS Symposium was a success!
- Speaker List for the 2019 RRS Symposium
- Composite Structures Presentation at EAA 96
- Build Your Own Rocket Event with Spaceport L.A.
- Liquid Rocket Components: Pyrotechnic Valves
- A Quick Word on Dip Tubes
- Spaceport L.A. holds its Rocktoberfest event at Relativity Space
- RRS visit to Additive Rocket Corporation
- A multi-staged vehicle with peak sensor
- Report on timer circuit design
- Posted 7 more Newsletters
- Volume 54 #3 September 1997 Newsletter
- Pictures by Tony Richards
- George Garboden’s 14k Booster and Space Dart
- Miscellaneous Pictures
- Hybrid Rocket Pictures
- Scott Clafflin’s 1670lb thrust LOX / Ethanol Rocket
- Rocket Go-Cart at the MTA
- Garvey and CSULB
- Escape II
- Rocket Launch, February 2001
- Rocket Launch, January 2001
- Rocket Launch, December 2000
- Some videos from the MTA
- Rocket Launch, September 2002