Aerospace

Computer Brains in Space

In my job, making our products rad-hard is essential; use of TMR (triple-modular redundancy) and SECDED (single error correction/double error detection) are common practices in spacecraft systems design.

Perhaps science can develop a similar technology for the moonbat tinfoil-hat and koolaid crowd who are continuously bombarded by “radiation’ from the hard-left.

Excerpt from NASA – Computer Brains in Space:

When your computer behaves erratically, mauls your data, or just “crashes” completely, it can be frustrating. But for an astronaut trusting a computer to run navigation and life-support systems, computer glitches could be fatal.

Unfortunately, the radiation that pervades space can trigger such glitches. When high-speed particles, such as cosmic rays, collide with the microscopic circuitry of computer chips, they can cause chips to make errors. If those errors send the spacecraft flying off in the wrong direction or disrupt the life-support system, it could be bad news.

Right: The humans inside this spacecraft aren’t the only ones who need protection from space radiation; their computers do, too.

To ensure safety, most space missions use radiation hardened computer chips. “Rad-hard” chips are unlike ordinary chips in many ways. For example, they contain extra transistors that take more energy to switch on and off. Cosmic rays can’t trigger them so easily. Rad-hard chips continue to do accurate calculations when ordinary chips might “glitch.”

Hauling Ass – er – Asteroid, that is

From SPACE.com — Gravity-Powered Asteroid Tractor Proposed to Thwart Impact:

A concept spacecraft could use gravity to tow asteroids away from a collision course with earth. Credit: Dan Durda – FIAAA / B612 Foundation.

An asteroid the size of two football fields could wipe out a large city or set off a series of tsunamis across the world. The threat of such an Earth-smashing asteroid has lead scientists to dream up several methods of defending the planet against such a catastrophe.

Solutions have ranged from pushing the asteroid with a spacecraft to mounting a thruster on its surface. But pushing it would require too much fuel and could break up the asteroid. Also, asteroids rotate, which could complicate the firing of a surface thruster.

Now, two NASA astronauts have presented a plan for an “asteroid tractor”—an unmanned, 20-ton spacecraft that uses the invisible bond of gravity to gently pull an asteroid into a new, non-threatening orbit.

Read more.

Related item: check out my Space Rocks animation.

UPDATE: The Space Tractor is featured on today’s Astronomy Picture of the Day.

Take a Trip to the Moon

OK – Fire up your Quicktime® Players and take a trip to the Moon with NASA.

Before the end of the next decade, NASA astronauts will again explore the surface of the moon. And this time, we’re going to stay, building outposts and paving the way for eventual journeys to Mars and beyond. There are echoes of the iconic images of the past, but it won’t be your grandfather’s moon shot.

Image left: NASA’s new crew exploration vehicle in lunar orbit. Artist’s concept by John Frassanito and Associates.

This journey begins soon, with development of a new spaceship. Building on the best of Apollo and shuttle technology, NASA’s creating a 21st century exploration system that will be affordable, reliable, versatile, and safe.

The centerpiece of this system is a new spacecraft designed to carry four astronauts to and from the moon, support up to six crewmembers on future missions to Mars, and deliver crew and supplies to the International Space Station.

The new crew vehicle will be shaped like an Apollo capsule, but it will be three times larger, allowing four astronauts to travel to the moon at a time.

This is very cool.

Mars Madness!

With the closest approach until 2018 of the planet MARS this month, you might want to bone up on Martian lore and history (from an Earthbound perspective). This is a link to a very entertaining and informative site called Mars Madness!

Astronaut Walt Cunningham – Ambassador of Exploration

From SPACE.com — Astronotes

NASA will honor former astronaut Walt Cunningham as an “Ambassador of Exploration,” an award which provides recognition for the astronauts of the space agency’s first manned spaceflight programs: Mercury, Gemini and Apollo.

On Friday, October 7, at 12:00 p.m. EDT (1600 GMT), NASA officials will present Cunningham with the award, a lucite-encased moon rock, at the Frontiers of Flight Museum in Dallas. He is donating the rock to the museum, which presently displays the Apollo 7 Command Module on loan from the Smithsonian Institution in Washington, DC.

Read More . . .

This is too cool! Walt Cunningham’s family lived up the street from us when I was a kid. One of his sisters used to babysit my brother and me and another sister went to the same high school I did. Congratulations Walt Cunningham!

Don’t Worry – The Sky Isn’t Falling – Yet

But if it starts to, the European Space Agency will call Don Quixote to the rescue . . .

From Science Daily: ESA Selects Targets For Asteroid-deflecting Mission Don Quijote

Based on the recommendations of asteroid experts, ESA has selected two target asteroids for its Near-Earth Object deflecting mission, Don Quijote.

Don Quijote is an asteroid-deflecting mission currently under study by ESA’s Advanced Concepts Team (ACT). Earlier this year the NEO Mission Advisory Panel (NEOMAP), consisting of well-known experts in the field, delivered to ESA a target selection report for Europe’s future asteroid mitigation missions, identifying the relevant criteria for selecting a target and picking up two objects that meet most of those criteria. The asteroids’ temporary designations are 2002 AT4 and 1989 ML.

Update: Click Here for a visual of the IMPACT!

A Psychedelic UFO Sighting

This morning, the dogs raced out of the patio into the back yard, barking frantically. Damsel went out to see what the ruckus was about. When Damsel got out there and saw what it was, she raced back in the house to get the camera. She raced back out just in time to get this photo just before the thing disappeared behind the neighbor’s garage:

Psychedelic Blimp

When I got home from work, I Googled “Psychedelic Blimp” and found a link to Soaring Dreams.

Interestingly, the behavior of our dogs with regard to things flying over is inconsistent; they bark at banner tows, blimps and flights of geese or ducks. They do not bark at airplanes or individual birds. Sorta weird – but Damsel points out that if we’re ever attacked by paratroopers or something like that, we have a built-in early warning system.