Posts Tagged ‘JAXA’

Can You Fly Using Only Light?

July 15, 2010 Leave a comment

You bet you can!

The Japanese space agency (JAXA) recently launched a test vehicle for solar sail technology called IKAROS. (Read about it here in a previous post)


The solar sail was unfurled and, a few days ago, JAXA confirmed that IKAROS was indeed accelerating!

Due to the pressure light from the sun striking the solar sail, IKAROS is accelerating at 0.00000356 meters per second per second.

For comparison, if you were to drop a cup in the kitchen, it will accelerate toward the floor at 9.8 meters per second per second. Pretty fast. Thats about 2,750,000 times faster than IKAROS is accelerating now.

So, how could IKAROS possibly be useful? Well take into account that the cup only accelerates toward the floor for about a tenth of a second or so before it shatters in a brilliant display.

IKAROS, on the other hand, is constantly accelerating. And it will continue to accelerate as there is nothing in space to stop it.

So if IKAROS were to accelerate at the same rate for the next year, it will end up moving at a speed of over 100 meters per second and would have travelled over 1,770,000 km.

All without using a drop of fuel!

And IKAROS is just a test vehicle. Further iterations of the design will involve bigger and more efficient sails, resulting in bigger accelerations.

I firmly believe that the first generation of deep space explorers will be using solar sail technology to get where they are going.

Exciting stuff people!

Deep Space Probe IKAROS: Update

June 17, 2010 Leave a comment

I recently wrote about the new Japanese space probe IKAROS. It is the first probe designed to test the idea of using solar sails to travel the universe.

A couple new photos were just released showing IKAROS with its sail unfurling, confirming the first stage of its mission.

IKAROS with sails in the process of unfolding. Photo: JAXA

IKAROS with solar sail completely unfurled. Photo: JAXA

Now its just a matter of getting it up to speed. I’m really interested in this one folks, and I’ll keep you up to date.