Thursday, September 24, 2020

Guest Post: American engineer Tom Dolan Dies in Car Crash

This post originally appeared at Today in Alternate History with input from Allen W. McDonnell. 

 In 1958, a young American engineer named Thomas Dolan was tragically killed in an automobile accident travelling to work at Vought Astronautics Division near Dallas. His vehicle turned over on the highway and caught fire. Dolan's charred body was barely recognizable and his priceless research papers reduced to ashes.

The incalculable loss to scientific research was that Dolan had recently conceived the experimental concept of a Lunar orbit rendezvous (LOR) through which a smaller lunar lander might independently descend to the surface of the Moon. In all probability, he was wasting his time with this brilliant idea because of the mule-headed stubbornness of the development team director, Wernher von Braun. Even when he was proven totally wrong on judgement calls such as the four-inch flight, von Braun relied on emotional appeals to plead for more time, money or one last chance.

Even to his closest colleagues, it was clear that von Braun exercised an unhealthy control over the direction of the space program. His obsession with rocketry maintained a single-minded focus on the anachronistic concept of direct ascent via a single launch vehicle. A third lunar-landing alternative was Earth Orbit Rendezvous (EOR) to assemble, and possibly fuel, components of a translunar vehicle in low Earth orbit. By order of magnitude, LOR was costly, EOR was expensive, and Direct Ascent was mind bogglingly insanely expensive in comparison.

Due to these cost considerations, EOR was developed using piloted reusable first stages to save money. Still, NASA relied upon von Braun's advanced skills in political manipulation. He fueled the fears of politicians in Washington that the Soviets would win the race to the Moon. The NASA budget rose to an incredible 1.5 percent of total federal funding. Much of the new money was taken from defense, and plans to send military advisors to Vietnam quietly scrapped.

America fulfilled President Kennedy's pledge to land a Man on the Moon before the end of the sixties. For the piloted first stage developed for EOR the E-1 engine was selected for development and demonstrated its reliability for decades in reusable piloted stages. The Aerospike version first used in 1968 for the first manned lunar mission was designed to be efficient at a broad range of altitudes unlike earlier models that were optimized for efficiency at sea level altitude.

With the benefit of hindsight, it was obvious that the right choice had been made for the long-term strategy of space flight. This was because direct ascent was grossly expensive with very limited usefulness once the basic moon landing series was completed. LOR was less expensive if the only goal was a limited number of moon landings for political effect. However, EOR with reusable piloted first stage although initially more expensive to develop, was a future-proof technology for later programs. As a result, by the time that Von Braun died in summer 1977, the future of space platforms was clear. The journey from space stations to permanent bases on the Moon and other planets in the Solar System was well underway.

Author's Note:

In reality, Dolan proposed the first fully developed concept of Lunar orbit rendezvous (LOR) but NASA officials initially considered the associated risks unacceptable. The Gemini missions proved them wrong, paving the way for his idea to be put into practice. For the NOVA and later Saturn V first stage, NASA selected the Rocketdyne F-1 rather than the E-1 model because of von Braun's desire for Direct Ascent.

 

Provine's Addendum:

As the Cold War ground on after the successful American lunar landing, space again became a major player as the Reagan administration was swept into office in 1980. Many blamed the Democratic party for the expansion of communism over southeast Asia with revolutions in Cambodia, Malaysia, and Indonesia following that in Vietnam. Central Asia seemed to be following, too, with the Soviet invasion in 1979. Reagan promised regaining the upper-hand, literally, in 1983 with a Strategic Defense Initiative including an orbital grid of anti-missile weapons. While labs across the country worked on R&D projects, budget-minded administrators sought more efficient means of launch. Ironically the spending escalated to the construction of a magnetic coilgun, which proved to be a good investment as the cost for individual payloads dwindled to a few hundred dollars per kilogram.

While the government budgets swelled, the Cold War ended in the '90s with the collapse of the Soviet Union and widening US-China relations. The Coilgun, built on the equatorial Jarvis Island isolated both for defense as well as Cold War secrecy, turned to civilian use. Communication satellites presented opportunities for hundreds of new cable television stations and satellite-linked telephones became the norm worldwide. With low start-up costs, numerous companies launched in the early 2000s with hopes of gold-mining on the Moon or founding the first permanent Martian city.

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