Robert Truax | |
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Captain Robert C. Truax (USN)
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Born | September 3, 1917 |
Died | September 17, 2010 Vista, California |
(aged 93)
Fields | Aerospace engineering |
Institutions | 1939-1959: United States Navy 1959-1966: Aerojet 1966- : Truax Engineering |
Alma mater | U.S. Naval Academy (BSc ME, 1939) NPS (BS Aero) Iowa State College (MS nuclear eng)[1] |
Known for | Skycycle X-2: "I asked Evel [Knievel] to postpone the Snake River shot until I ironed out the difficulty."[2] |
Influences | Robert Goddard |
Spouse | Marisol |
Captain Robert C. Truax (USN) (September 3, 1917 – September 17, 2010) was a rocket engineer in the United States Navy, and companies such as Aerojet and Truax Engineering, which he founded. Truax was a proponent of low-cost rocket engine and vehicle designs.[3][4][5][6]
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As a teenager, Truax was inspired by Robert Goddard articles in Popular Mechanics magazine to build his own rockets while residing in Alameda, California. From 1936-1939, midshipman Truax tested liquid-fuel rocket motors and published a February 1939 report in Astronautics.[7] In 1938, he showed a thrust chamber that he had constructed to the British Interplanetary Society and wrote technical reports published by the American Rocket Society.
Following two years' sea duty, first on the USS Enterprise (CV-6) and then a destroyer, then-Lieutenant Commander Truax worked at the Engineering Experiment Station at Annapolis in the Bureau of Aeronautics Ship Installations Division under Commander C.A. Bolster.[7] Truax headed the Navy Development Project (ensigns R.C. Stiff, J.F. Patton, & W. Schubert and MIT civilian Robertson Youngquist) which discovered that some fuels burst into flame spontaneously when brought into contact with nitric acid, which led to the use of aniline + 20% Furfuryl alcohol for the 1945 Wac Corporal (the first free-flight rocket to use the fuel).[8] By the spring of 1943, the Truax group had developed a 1,500 lbf (6.7 kN) thrust JATO using hypergolic fuel[7] before the introduction of solid fuel JATO units.[9]
From 1955-1958, Truax was assigned to the USAF under General Bernard A. Schriever,[10] where Truax and Dr. Adolph Thiel headed the initial design studies and IRBM specifications for the PGM-17 Thor missile. Truax subsequently worked on the Navy's Viking rocket and UGM-27 Polaris missile. Truax studied the sea launching of rockets such as the Sea Bee and Sea Horse projects.[11] After serving as 1957 American Rocket Society president, Truax retired from the USN in 1959 and headed the Aerojet-General Advanced Development Division and Aerojet's Sea Dragon project.[2]
In 1966 Robert Truax founded Truax Engineering, which studied sea launch concepts similar to the earlier Sea Dragon: the Excalibur, the SEALAR, and the Excalibur S.[10]
Truax also designed the Skycycle X-2, (WWW.x-2skycycle.com) which he unsuccessfully tested on April 15, 1972 and June 24, 1973, and which Evel Knievel unsuccessfully used at the Snake River Canyon in 1974.[2]
X-3 Volksrocket | |
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Type | manned, sub-orbital, single-stage[2] |
Place of origin | United States |
Service history | |
Used by | never used |
Production history | |
Manufacturer | Truax Engineering |
Specifications | |
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Engine | 4 Rocketdyne LR101 vernier engines[12] |
Propellant | Liquid oxygen & Jet-A kerosene |
Flight altitude | 50 miles (80 km): burnout at 113,000 feet (34,000 m)[2] |
Guidance system |
X-15/Dyna-soar inertial platform[2] |
The X-3[12] Volksrocket (other names: Arriba One, Skycycle X-3) was a reusable space tourism rocket planned by Robert Truax after Evel Knievel provided a $1,000 research grant[12] for a pilot study. Truax was looking for volunteers with enough money to help fund the effort and who were crazy enough to want to fly aboard his rocket. He got thousands of volunteers, many of which were crazy enough but few of which had the financial resources. Among those who offered some financing and who assisted Truax and went through some of his training, were astronauts: Ronald Beller pilot from Kentucky, Martin Yahn, Ray Upton, Peruvian-born Daniel J. Correa and Fell Peters, all of southern California. The rocket used surplus components and was tested through 1991.
External media | |
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X-3 Volksrocket testing |