Posts Tagged‘nuclear thermal’

NASA Hamstrung By Congress Once Again.

It seems that whenever I mention NASA and the US congress together I’ve never really got anything positive to say. Indeed my last 3 posts tagged congress are all critical of the government’s involvementin NASA’s affairs and how their constant medlinghas caused nothing but harm. Still I recognise that without congress’ involvement there wouldn’t be a NASA at all and that whilst I may lament the organisation being used as a part of pork barrell politics it at least keeps their budget from being drastically slashed. Today I was hoping to write about some of the more positive news that had come out of the US congress but unfortunately the relationship hasn’t changed one bit.

About 4 days ago saw the passing of a bill in congress that saw some funding approved for NASA. Now usually this would be something to celebrate but in true congressional style they’ve managed to bollocks it up once again:

 The House Science and Technology Committee approved H.R. 5781 with strong bipartisan support July 22, sending forward a bill that authorizes only a small fraction of the $3.3 billion NASA sought to invest in a commercial crew transportation system over the next three years. The bill authorized $150 million through 2013 for commercial crew and another $300 million in the form of government-backed loans or loan guarantees. The measure also would continue much of the work being done under NASA’s Constellation program, a 5-year-old effort to build new rockets and spacecraft optimized for lunar missions that President Barack Obama targeted for termination in his 2011 spending proposal delivered to Congress in February.

Now whilst I’m excited at the fact that they’re adding another space shuttle flight to the manifest (as that means I’ll definitely be able to go and see it next year) the rest of the bill shows a complete disregard for Obama’s vision for spacethat was laid down at the start of this year. The idea of replacing all of NASA’s routine activities with cheaper commercial solutions was a sound idea, especially when companies like SpaceX are proving just how capable they are. $3.3 billion would have bought at a rough guess about 30 fully stacked Falcon 9 rockets with Dragon capsules on top, more than enough to tide NASA over for several years. $150 million would probably cover the cost of a single rocket and little more, meaning that all you’d really get would be one demonstration flight.

Keeping the Constellation program alive is something I can’t really support unless it gets a whole bucket load of new funding. Right now many of NASA’s other activities like robotic space exploration and science have suffered because the Constellation program is using resources that were once planned for them. The program’s vision was too ambitious for the amount of funding it was given and unless new money is brought in to complete it NASA will continue to suffer under its burden. You know that this is all done in the name of pork barrelling when the bill will “prohibit NASA from laying off civil servants for at least six months following the bill’s enactment”.

Most often the criticisms I see laid at the commercial alternatives to NASA’s own launch systems is that they don’t have the experience nor do they meet the safety ratings required for NASA’s human program. The first is somewhat valid as whilst companies like United Launch Alliance have a vast wealth of launch experience they have never actually launched people into space on one of their rockets. On the other hand however the requirements for man ratingare well known and SpaceX’s Falcon 9 conforms to all required specifications. ULA has also has specifications for man rated versions of their ATLAS-V and DELTA-V rockets so the notion that commercial space alternatives aren’t up to the task is plainly false.

The bill makes even less sense when you consider some of the most recent developments coming out of the commercial space industry. SpaceX just recently announced their plans for some new launch systems and boy are they impressive:

For the transition from Earth to Mars, however, SpaceX believes nuclear thermal is the preferred propulsion means for the piloted aspect of the mission, while solar-electric power could be used to transport supplies.

The U.S. government “should take the lead on nuclear and commercial industry should take the lead on building heavy-lift launch vehicles,” Markusic says. “Low-level propulsion technology research and development should be government-led, with a transition to flight development in 2025.”

A growth development, dubbed Falcon X Heavy, would employ nine engines clustered in three cores. Collectively these would generate 10.8 million lb. of thrust at liftoff and boost 125,000 kg. to orbit. The ultimate launch vehicle, the Falcon XX, stands as tall as the Saturn V, is configured with six engines in a single core and is designed to lift 140,000 kg. to LEO.

SpaceX’s new rockets are simply staggering in their specifications. The Falcon X Heavy already outpaces the Saturn V (the biggest rocket in history) and the Falcon XX is nipping at the heels of the planned Ares V. They’ve nailed the point that the private industry should be responsible for the more routine activities of getting into space as NASA has no real need to do this when cheaper, viable alternatives are available. Interestingly enough this is the first I’ve heard anyone talk about nuclear thermal propulsionin quite a long time and realistically I’ve always seen it as the next logical step in rocket technology once chemical propulsion reached its limits. Whether or not SpaceX’s push to get NASA to develop such technology gets off the ground is another matter however and it might be another decade before it sees any traction.

I’ve always been disillusioned with the US congress when it comes to meddling in NASA’s affairs and these recent developments haven’t done anything to help that. The private space sector is really starting to pick up steam and it just makes sense for NASA to drop their current launch systems in favor of cheaper alternatives. This will allow them to get back to their roots of pioneering in space rather than getting caught up in the routine activities that can be easily offloaded to someone else. With Elon Musk’s plan to retire to Mars I’m sure we’ll be seeing a lot more progress from the private sector in the decades to come and right now it looks likely that they’ll become the ones to inspire the next generation. Maybe then congress will wake up and let NASA do what they do best.