Skip to main content

Going to Mars – and Quickly – With Nuclear Energy


The White House’s petition site, called We the People, has gained some attention over the last couple of months because – well, let’s just say that a wide-open web site that invites citizens to put together petition drives is likely to attract a fair number of cranky malcontents – and that makes for fun news stories.

But there’s some genuinely interesting petition topics, too. Take this one, for example:
Harness the full intellectual and industrial strength of our universities, national laboratories and private enterprise to rapidly develop and deploy a nuclear thermal rocket (NTR) adaptable to both manned and un-manned space missions. A NTR (which would only operate in outer space) will jump-start our manned space exploration program by reducing inner solar system flight times from months to weeks. This is not new technology; NTRs were tested in the 1960s (President Kennedy was a guest at one test). The physics and engineering are sound. In addition to inspiring young Americans to careers in science, technology, engineering and mathematics, a working NTR will herald a speedy and economical expansion of the human presence in the cosmos.
Well maybe it will and maybe it won’t, but no harm asking, right? It certainly has that New Frontier-Atoms for Peace vibe that we wholeheartedly endorse and harks back to the NERVA/Rover projects of the 60s.

MSNBC describes the original programs and their history in more detail:
Back in the 1960s, Los Alamos National Laboratory in New Mexico and its industrial partners set up Project NERVA, which stands for Nuclear Energy for Rocket Vehicle Application. The idea was to use a nuclear reactor to heat up liquid hydrogen propellant and blast a rocket out of Earth orbit. A trip to the moon would take just 24 hours. Going to Mars? You could make the voyage in just four months.
The article goes on to note that the expense and untried nature of NERVA dampened several projects and eventually enthusiasm – and the budget to fuel it - withered away. But that doesn’t mean it died a nascent, undercooked technology, as this article in Los Alamos National Lab’s National Security science on-line magazine explains:
In 1969, NERVA's successes prompted NASA-Marshall Space Flight Center director Wernher von Braun to propose sending 12 men to Mars aboard two rockets, each propelled by three NERVA engines (Fig. 5). The mission would launch in November 1981 and land on Mars in August 1982.
Although the mission never took place, engines tested during that time met nearly all of NASA's specifications, including those related to thrust, thrust-to-weight ratio, specific impulse, engine restart, and engine lifetime. When the Project Rover/NERVA program was canceled in 1972, the only major untested requirement was that a NERVA rocket engine should be able to restart 60 times and operate for a total of 10 hours.
Pretty impressive. 

The article goes into great detail about the working of the nuclear engine and how it differs from the nuclear reactors we talk about here – that is, those generating electricity. Well worth a read.
The article does not say, but I wonder if the long lead time from von Braun’s endorsement and the launch of a NERVA powered rocket was due to other advances would need to happen to make a 4-month flight to Mars plausible – protecting astronauts and equipment from space-borne radiation, for example, or finding ways to mitigate the disruption of the sleep-wake cycle (the Russians have been playing with this one.)

But never let it be said that any of this should discourage anyone. Aaron VanAlstine, an Army major at Joint Base Lewis-McChord near Seattle, set up the petition. And he did it for the best reason imaginable: "I'm just into space."

Last I checked, the petition had 24,297 signatures and needs 25,000 to receive a White House response – I reckon it would come from NASA, but we’ll see. So head on over there if you’re inclined and add your name.

Comments

Joffan said…
I like this project.

Sadly, you were reading the signature numbers the wrong way around. The petition HAS less than a thousand signatures and NEEDS more than 24000 more to get to the response threshold.
jimwg said…
I'm not dumping cold water on noble efforts, but this petition's going nowhere with an intensely domestics-oriented administration. Heck, we already HAD and paid for the hardware for Apollos 18 and 19 and the Congress didn't even want to cough up the relatively few bucks it cost to moon them! That said, NASA and other space groups shouldn't sound so blasted apologetic about using nuclear energy in space, whether as RTGs or reactors! Stand up with pride using them, lest be saddled having more wimpy underpowered green-PC missions like Juno! My view is to divert all Mars+ chemical rocket research into (reusable) nuclear propulsion systems for the most efficient and economic long-haul.

James Greenidge
Queens NY

Popular posts from this blog

Fluor Invests in NuScale

You know, it’s kind of sad that no one is willing to invest in nuclear energy anymore. Wait, what? NuScale Power celebrated the news of its company-saving $30 million investment from Fluor Corp. Thursday morning with a press conference in Washington, D.C. Fluor is a design, engineering and construction company involved with some 20 plants in the 70s and 80s, but it has not held interest in a nuclear energy company until now. Fluor, which has deep roots in the nuclear industry, is betting big on small-scale nuclear energy with its NuScale investment. "It's become a serious contender in the last decade or so," John Hopkins, [Fluor’s group president in charge of new ventures], said. And that brings us to NuScale, which had run into some dark days – maybe not as dark as, say, Solyndra, but dire enough : Earlier this year, the Securities Exchange Commission filed an action against NuScale's lead investor, The Michael Kenwood Group. The firm "misap

An Ohio School Board Is Working to Save Nuclear Plants

Ohio faces a decision soon about its two nuclear reactors, Davis-Besse and Perry, and on Wednesday, neighbors of one of those plants issued a cry for help. The reactors’ problem is that the price of electricity they sell on the high-voltage grid is depressed, mostly because of a surplus of natural gas. And the reactors do not get any revenue for the other benefits they provide. Some of those benefits are regional – emissions-free electricity, reliability with months of fuel on-site, and diversity in case of problems or price spikes with gas or coal, state and federal payroll taxes, and national economic stimulus as the plants buy fuel, supplies and services. Some of the benefits are highly localized, including employment and property taxes. One locality is already feeling the pinch: Oak Harbor on Lake Erie, home to Davis-Besse. The town has a middle school in a building that is 106 years old, and an elementary school from the 1950s, and on May 2 was scheduled to have a referendu

Wednesday Update

From NEI’s Japan micro-site: NRC, Industry Concur on Many Post-Fukushima Actions Industry/Regulatory/Political Issues • There is a “great deal of alignment” between the U.S. Nuclear Regulatory Commission and the industry on initial steps to take at America’s nuclear energy facilities in response to the nuclear accident in Japan, Charles Pardee, the chief operating officer of Exelon Generation Co., said at an agency briefing today. The briefing gave stakeholders an opportunity to discuss staff recommendations for near-term actions the agency may take at U.S. facilities. PowerPoint slides from the meeting are on the NRC website. • The International Atomic Energy Agency board has approved a plan that calls for inspectors to evaluate reactor safety at nuclear energy facilities every three years. Governments may opt out of having their country’s facilities inspected. Also approved were plans to maintain a rapid response team of experts ready to assist facility operators recoverin