Rocket taking off from the desert
According to some members of the aerospace sector, employing nuclear power for space travel is crucial for achieving a successful mission to Mars.
The use of nuclear thermal propulsion is already incorporated in military strategies, such as for an orbital weapon, according to recent reports.
Specialists propose that being exposed to radiation from a reactor during a shorter journey would be preferable to being exposed to cosmic radiation for a much longer journey.
According to an interview with Elon Musk, SpaceX has captured the public’s attention in 2020, but there are numerous companies globally that are also involved in space exploration, including the development of various components. Recently, private industry groups have expressed interest in utilizing nuclear-powered spacecraft as a means to expedite the journey to Mars in the future.
The concept is straightforward and potentially successful: a miniature nuclear reactor is entirely encased to ensure the safe release of energy through a specialized opening. The process involves the splitting of low-enriched uranium by neutrons, triggering a chain reaction, and causing the propellant, hydrogen, to vaporize into large quantities.
Thrust is generated through this process, which can be seen as a controlled nuclear reaction with a safety mechanism in place. Supporters on the committee claim that the fuel utilized is less unstable and the reaction itself is not as hazardous as it may seem in relation to nuclear weapons.
In the era of the nuclear dream, when nuclear energy was viewed as a groundbreaking and empowering answer to many issues, researchers and creators conceptualized nuclear variations of numerous consumer products. Manufacturers of automobiles unveiled concept vehicles fueled by nuclear reactors. Despite the fact that the U.S. deployed two nuclear bombs on Japan, the notion that nuclear power for consumers could be completely secure and transformative persisted.
Looking back, we are now aware of what occurred afterwards. However, prior to the failure of the promise of infinite nuclear power, an inquisitive and productive scientist named William Corliss, who was also an “anomalist”, discussed the potential of utilizing nuclear energy for space travel. In 1966, Corliss wrote for the Atomic Energy Commission about his belief that one day a rocket would launch a manned spacecraft from its orbit around Earth and place it on an elliptical transfer orbit to reach Mars after 7 months.
Corliss was an author during a time when humans had not yet reached the moon, but his evaluation of the advantages and disadvantages of using nuclear power for space travel remains relevant. In the present day, with the history of nuclear plant accidents, the public is cautious. Recently, Musk proposed using nuclear thermal propulsion to reduce the duration of his planned SpaceX Starship trips to Mars, a concept that is met with controversy. However, Corliss’s estimate of a seven-month journey aligns with the current belief of experts that a non-nuclear trip to Mars would take the same amount of time.
During the Commercial Space Transportation Conference in Washington, D.C. in January, nuclear spaceflight was a topic of discussion among experts. Aerospace contractors such as Lockheed and Rockwell have always been involved in the development and construction of NASA spacecraft. For many years, these experts have proposed that the small amount of nuclear energy used by certain satellites and surface vehicles could be expanded to power space travel. This advancement could potentially decrease the risk for astronauts during their journey to Mars, where exposure to cosmic radiation is a significant threat.
There is a lot of talk surrounding nuclear flight and its use for propulsion during spacecraft flight, rather than powering a launch. When discussing the potential for nuclear use at SpaceX, Musk is careful to make this distinction, which is also echoed by commercial contractors. During a panel in January, industry representatives noted that the government is hesitant to explore nuclear propulsion but is currently focused on developing plans for a return to the moon. As the journey to the moon is much shorter, nuclear energy is not necessary.
In the past few years, there has been a collaboration between NASA and the military with corporations such as Interstellar Technologies and Atomos Space, as seen in this discussion. Instead of developing and conceptualizing ideas and then outsourcing the construction work, NASA is now working closely with these companies throughout the entire process.
It is difficult to envision a practical method for transporting individuals to other planets without a technology similar to nuclear propulsion, which would significantly reduce travel time and make it possible. This prediction was made by Corliss back in 1966.