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On April 21, NASA successfully launched Three Smartphone Satellites on the Antares/Cygnus launch vehicle, which NASA hopes will soon be resupplying the International Space Station. These “PhoneSats” are the size of a coffeecup are currently emitting packets on the amateur radio spectrum (437.425 MHz) back to earth. Read More
The PhoneSats started as a project among young engineers working at the NASA Ames Research Center in California. Jim Cockrell, the project’s manager, says it began as a hallway conversation. One noted that smartphone microprocessors are cheaper than those in satellites. So why not just use a smartphone as a satellite?
“It was sort of a whimsical notion,” Cockrell says. But it also made sense. Modern satellites are used for communication and navigation, and so are smartphones. And the phones have things that satellites have, too, like accelerometers, gyroscopes and cameras.
At 53 years old, Cockrell is the self-described “graybeard” of the small team of 20-somethings. With decades of experience, he had good reason to think the project might not work. The phones would have to survive the violent shaking of their launch into orbit. Once in space, they would need to withstand extreme temperatures and intense radiation that doesn’t exist on the Earth’s surface.
“I was really skeptical at first, because I said, ‘OK, there’s a reason why NASA develops these expensive satellites and tests them extensively,’ ” he says.
But the team’s younger members were more optimistic. “The mobile phones are designed to be thrown around the room and for people to drop them in water. They’re really robust bits of technology,” says Jasper Wolfe, a 22-year-old engineer on the project.
Wolfe, Cockrell and the rest of the team got a couple of Nexus smartphones from Amazon. They added extras, like plus-sized batteries and a powerful transmitter. They put it all in a metal case about the size of a Kleenex box. But the phones were still ordinary smartphones; they still had games on them. “We played around with Angry Birds on the ground,” Wolfe says.
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