propulsion

What were you hoping for with the big juicy Mars discovery that a NASA researcher hinted at? Aliens? Kuato? Jimmy Hoffa?

As you'll no doubt recall, NASA investigator John Grotzinger was quoted as saying that data from the Curiosity rover suggested a discovery of epic significance. Well, here's your official oven-fresh serving of disappointment.

Today NASA confirmed there's no earth-shaking finding from the soil samples analyzed with Curiosity's on-board chemistry lab. … Read more

PASADENA, Calif.--Dutifully executing its complex flight control software, the Mars Science Laboratory silently raced toward its target Sunday, picking up speed as it closed in for a 13,200-mph plunge into the Red Planet's atmosphere and an action-packed seven-minute descent that will require a rocket-powered "sky crane" to lower a one-ton nuclear-powered rover to the surface.

The target is Gale Crater and the goal is a pinpoint landing near the base of a three-mile-high mound of layered rock that represents hundreds of thousands to tens of millions of years of martian history, a frozen record of … Read more

PASADENA, Calif. -- The Mars Science Laboratory rover, still attached to its drum-shaped interplanetary cruise stage, closed in on the Red Planet on Saturday, steadily accelerating under the increasing tug of the planet's gravity as it streaked toward a precisely targeted plunge into the martian atmosphere overnight Sunday for a high-stakes descent to the surface.

"The spacecraft and ground systems are all healthy and performing as expected," said MSL mission manager Arthur Amador. "The spacecraft is now in the EDL (entry, descent, and landing) approach configuration, in our final approach orientation, pointing our medium gain antenna … Read more

The question is straightforward: how to get a car-size rover safely to the surface of Mars? And not just anywhere, but to a very precisely defined bull-s-eye on the floor of a broad crater, within roving distance of a 3-mile-high mountain.

In earlier ventures to Mars, spacecraft have either bounced to the surface cocooned in giant airbags or made the trip atop a rocket-powered descent stage. But neither approach was an option for NASA's Curiosity rover, the centerpiece of the $2.5 billion Mars Science Laboratory mission.

Tipping the scales at one ton, the nuclear-powered Curiosity, a rolling laboratory … Read more

Unexpected problems with a NASA science satellite in orbit around Mars could briefly delay receipt of telemetry from the agency's $2.5 billion Mars Science Laboratory rover during the spacecraft's dramatic 7-minute descent to the surface August 6, officials said Monday.

While the issue with the orbiting Odyssey satellite will have no effect on the rover's ability to successfully execute its autonomous entry, descent, and landing sequence -- half jokingly dubbed "Seven Minutes of Terror" by project engineers -- it could mean an additional period of nail-biting before confirmation that the so-called "sky crane&… Read more

In just 41 days, on August 5, NASA's Mars Science Laboratory rover will touch down on the Red Planet, and this will be no ordinary landing. In fact, NASA has dubbed the descent "Seven Minutes of Terror."

"When people look at it, it looks crazy," senior EDL engineer at the Jet Propulsion Laboratory Adam Steltzner said in a new video by NASA on the rover landing. "It is the result of reasoned engineering thought, but it still looks crazy."

The recently released video (see below) outlines exactly how crazy the feat of landing … Read more

NASA's $2.5 billion Mars Science Laboratory rover is in good shape and on target for a nail-biting seven-minute plunge to a bull's-eye landing on the red planet in early August, thanks to upgraded software and post-launch improvements that will enable the craft to make a more precise descent to the floor of Gale Crater, mission managers said Monday.

While engineers are continuing to troubleshoot a contamination issue with Teflon seals inside a high-tech rock drill on the rover's robot arm, the project scientist said he is confident workarounds will be in place by the time the … Read more

Looking a little bit like the light cycles from Tron, but without the glowy bits, the E-Tracer 7009 placed in the top three of the Progressive Automotive X Prize competition in 2010.

Now the two-wheeled, two-seater has been renamed the MonoTracer MTE-150 and is headed to production, according to Auto Blog Green.

The MonoTracer MTE-150 has a Kevlar cabin and runs on a third-generation 150 kW (200 horsepower) drivetrain from AC Propulsion in California.

While the X Prize competitors were challenged to create a vehicle that could reach 100 mpge (miles per gallon equivalent), the MonoTracer could see about 350 … Read more

NASA's solar-powered Juno spacecraft, the centerpiece of a $1.1 billion mission to Jupiter, was mounted atop an Atlas 5 rocket today, setting the stage for launch August 5 on a five-year voyage to the solar system's largest planet.

Once in orbit around Jupiter's poles, Juno's instruments will precisely map the planet's gravitational and magnetic fields, probe its turbulent atmosphere and hidden interior and study the mechanisms responsible for its powerhouse auroras, the strongest in the solar system.

"Jupiter probably formed first, it's the largest of all the planets, in fact it's … Read more