Richard Feynman’s Lessons From a NASA Rocket Explosion-And Then Another
June 29, 2015
The news that yet another rocket bound for the Space Station exploded over the weekend has left many people shocked. Though the Falcon 9 rocket that exploded shortly after launch thankfully had no crew and thus no lives were lost, the setback is sobering to many people. The company that made the rocket, SpaceX, acknowledges that as of now it has no idea what went wrong.
The loss of one resupply rocket is understandable, even expected. But then there was another-and now another, making the third one this year. While the astronauts are not in imminent danger, the series is deeply concerning and puzzling to many people. Didn't they spend years of research and millions of dollars on this? Don't they know what they are doing?
Well, yes. With the best technology in the world and plenty of patriotic pride, it's easy to forget that even sub-orbital space flight is both difficult and dangerous. If the public underestimates the danger of shuttle flight, NASA itself shares some of the blame. A Presidential Commission was appointed to study the 1986 Challenger shuttle accident and its causes. At first glance the culprit was a mechanical problem: the failure of small O-rings to seal, leading to a catastrophic chain reaction. Yet the real fault for the explosion went far beyond a simple gas leak. The Commission was very critical of NASA's procedures, finding serious flaws in the decision-making process that led to the launch. NASA had ignored warnings from scientists that the O-rings on the solid rocket boosters had repeatedly failed safety tests at low temperatures.
Physicist Richard Feynman was on the commission, and in his appendix to the Commission's Report wrote that NASA believes the probability of a shuttle failure to be a thousand times less than it actually is. "One reason for this may be an attempt to assure the government of NASA perfection and success in order to ensure the supply of funds," Feynman wrote.
Space agencies, including NASA, must project a positive, can-do attitude, and often downplay the risks of space flight. In recent years space programs and launches have been trivialized, commercialized, and politicized. In 2001, the world's first space tourist, Dennis Tito, went into orbit. The following year pop star Lance Bass announced preparations to go to the International Space Station. (Both were Russian cargoes; Bass later dropped out, because of financial rather than safety issues.)
Fueled by patriotism, a lucky streak, and NASA's confidence, Americans have been coaxed into complacency about the safety of manned space flight. Each successful shuttle launch should be applauded for the amazing feat it is, an example of human ingenuity overcoming not only gravity but great odds. Rockets and space shuttles are incredibly complex machines, with tens of thousands of important parts, all--as the grim joke goes--manufactured by the lowest bidder. Each launch takes years of preparation and hundreds of brilliant, dedicated professionals. Their successes are often taken for granted, while their failures are obvious and tragic.
Americans expect perfection and safety from NASA, but the public should be amazed at the rarity of problems and mistakes. NASA is not eager to admit it, but life-threatening crises and potential problems will always go hand in hand with space shuttle flights. Optimism should be tempered with realism about how inherently dangerous and complicated it is to put humans into space. We have not mastered space flight, and should not fool ourselves into thinking otherwise. As Feynman concluded in his report, "For a successful technology, reality must take precedence over public relations, for nature cannot be fooled."
#1 Randy on Monday June 29, 2015 at 7:40pm
A launch is not a product, not an event. It’s a process. We know how to launch things into orbit successfully every time. We simply refuse to do it, is all. We’d rather prioritize things like emotional attachment to clumsy systems of measures, or corner-cutting for profit, instead of aiming for zero catastrophic failures. Now, with so much cargo being blown to bits and scattered over the ocean, it’s going to look a little more profitable to start doing things right again. Until it doesn’t. Again. Then there will be more explosions.