---
title: "Jack Parsons"
chunk: 7/16
source: "https://en.wikipedia.org/wiki/Jack_Parsons"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T04:32:07.745794+00:00"
instance: "kb-cron"
---

The Group then agreed to produce and sell 60 JATO engines to the United States Army Air Corps. To do so they formed the Aerojet Engineering Corporation in March 1942, in which Parsons, Forman, Malina, von Kármán, and Summerfield each invested $250, opening their offices on Colorado Boulevard and bringing in Amo Smith as their engineer. Andrew G. Haley was recruited by von Kármán as their lawyer and treasurer. Although Aerojet was a for-profit operation that provided technology for military means, the founders' mentality was rooted in the ideal of using rockets for peaceful space exploration. As Haley recounted von Kármán requesting: "we will make the rockets—you must make the corporation and obtain the money. Later on you will have to see that we all behave well in outer space."
Despite these successes, Parsons, the project engineer of Aerojet's Solid Fuel Department, remained motivated to address the malfunctions observed during the Ercoupe tests. In June 1942, assisted by Mills and Miller, he focused his attention on developing an effective method of restricted burning when using solid rocket fuel, as the military demanded JATOs that could provide over 100 pounds of thrust without any risk of exploding. Although solid fuels such as GALCIT-27 were more storable than their liquid counterparts, they were disfavored for military JATO use as they provided less immediate thrust and did not have the versatility of being turned on and off mid-flight. Parsons tried to resolve GALCIT-27's stability issue with GALCIT-46, which replaced the former's ammonium nitrate with guanidine nitrate. To avoid the problems seen with ammonium nitrate, he had GALCIT-46 cooled and then heated prior to testing. When it failed the test, he realized that the fuel's binding black powders rather than the oxidizers had resulted in their instability, and in June that year had the idea of using liquid asphalt as an appropriate binding agent with potassium perchlorate as oxidizer.
Malina recounted that Parsons was inspired to use asphalt by the ancient incendiary weapon Greek fire; in a 1982 talk for the International Association of Astronomical Artists Captain Boushey stated that Parsons experienced an epiphany after watching workers using molten asphalt to fix tiles onto a roof. Known as GALCIT-53, this fuel proved to be significantly more stable than the Group's earlier concoctions, fulfilling Parsons' aim of creating a restricted-burn rocket fuel inside a castable container, and providing a thrust 427% more powerful than that of GALCIT-27. This set a precedent which according to his biographer John Carter "changed the future of rocket technology": the thermoplastic asphalt casting was durable in all climates, allowing for mass production and indefinite storage and transforming solid-fuel agents into a safe and viable form of rocket propulsion. Plasticized variants of Parsons' solid-fuel design invented by JPL's Charles Bartley were later used by NASA in Space Shuttle Solid Rocket Boosters and by the Strategic Air Command in Polaris, Poseidon and Minuteman intercontinental ballistic missiles.

=== Foundation of JPL and leading the Agape Lodge: 1942–1944 ===

Aerojet's first two contracts were from the U.S. Navy; the Bureau of Aeronautics requested a solid-fuel JATO and Wilbur Wright Field requested a liquid-fuel unit. The Air Corps had requested two thousand JATOs from Aerojet by late 1943, committing $256,000 toward Parsons' solid-fuel type. Despite this drastically increased turnover, the company continued to operate informally and remained intertwined with the GALCIT project. Caltech astronomer Fritz Zwicky was brought in as head of the company's research department. Haley replaced von Kármán as Aerojet chairman and imposed payroll cuts instead of reducing JATO output; the alternative was to cut staff numbers while maintaining more generous salaries, but Haley's priority was Aerojet's contribution to the war effort. Company heads including Parsons were exempted from this austerity, drawing the ire of many personnel.
Parsons' newfound credentials and financial security gave him the opportunity to travel more widely throughout the U.S. as an ambassador for Aerojet, meeting with other rocket enthusiasts. In New York he met with Karl Germer, the head of O.T.O. in North America and in Washington, D.C. he met Poet Laureate Joseph Auslander, donating some of Crowley's poetry books to the Library of Congress. He also became a regular at the Mañana Literary Society, which met in Laurel Canyon at the home of Parsons' friend Robert A. Heinlein and included science fiction writers including Cleve Cartmill, Jack Williamson, and Anthony Boucher. Among Parsons' favorite works of fiction was Williamson's Darker Than You Think, a novelette published in the fantasy magazine Unknown in 1940, which inspired his later occult workings. Boucher used Parsons as a partial basis for the character of Hugo Chantrelle in his murder mystery Rocket to the Morgue (1942).
Helen went away for a period in June 1941, during which Parsons, encouraged to do so by the sexually permissive attitude of O.T.O., began a sexual relationship with her 17-year-old sister, Sara. Upon Helen's return, Sara asserted that she was Parsons' new wife, and Parsons himself admitted that he found Sara more sexually attractive than Helen. Conflicted in her feelings, Helen sought comfort in Wilfred Talbot Smith and began a relationship with him that lasted for the rest of his life; the four remained friends. The two couples, along with a number of other Thelemites (some of whom with their children), moved to 1003 South Orange Grove Boulevard, an American Craftsman-style mansion. They all contributed to the rent of $100 a month and lived communally in what replaced Winona Boulevard as the new base of the Agape Lodge, maintaining an allotment and slaughtering their own livestock for meat as well as blood rituals. Parsons decorated his new room with a copy of the Stele of Revealing, a statue of Pan, and his collection of swords and daggers. He converted the garage and laundry room into a chemical laboratory and often held science fiction discussion meetings in the kitchen, and entertained the children with hunts for fairies in the 25-acre garden.