Breaking News
Comments
Newest First | Oldest First | Threaded View
JON-design
User Rank
Rookie
re: Ikaros probe to Venus successfully deploys 'solar sail'
JON-design   3/15/2012 11:54:13 AM
NO RATINGS
Space exploration takes my breath away. When you think about all the physics and long-term planning that goes into something as complex as exploring the other planets of our solar system it is astounding that we are able to accomplish anything at all. Why the scientists and engineers doing this diligent work are not lauded as heroes every day is beyond me! Jon - Website Designers

Duane Benson
User Rank
Blogger
re: Ikaros probe to Venus successfully deploys 'solar sail'
Duane Benson   6/14/2010 8:01:04 PM
NO RATINGS
Thinking In terms of changing the solar-orbital velocity, it makes sense now. I was thinking in terms of a static set of objects, which of course, our planets are not. Sorry Newton and Kepler.

selinz
User Rank
CEO
re: Ikaros probe to Venus successfully deploys 'solar sail'
selinz   6/14/2010 6:22:11 PM
NO RATINGS
Take a gander at Wikipedia, solar sail... It's cool technology!

jnhong
User Rank
Rookie
re: Ikaros probe to Venus successfully deploys 'solar sail'
jnhong   6/12/2010 12:00:12 AM
NO RATINGS
@Duane B: I was thinking the same thing. But if the sail acts as a mirror, the reflected photons can be aimed "forward", pushing the craft away from the Earth into a lagging orbit. Relatively, the probe is slowing down and the Sun's gravity will pull it in. It's like a drag chute instead of a mainsail. Huge guess, but I'm sure some rocket scientist here can set us right.

Duane Benson
User Rank
Blogger
re: Ikaros probe to Venus successfully deploys 'solar sail'
Duane Benson   6/11/2010 8:31:31 PM
NO RATINGS
Am I missing something here? Wouldn't the solar cell capture photons coming from the sun to push the probe away from the sun? And wouldn't the trip to Venus require that the probe go toward the sun? I think Venus is about 25% of an orbit behind the Earth right now, so the probe would be heading just slightly in from perpendicular to the path of the photons. I wouldn't think a solar sail could tack like a wind sail here on earth because that utilizes aerodynamics, not Newtonian force.



Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
Post a comment
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
2 comments
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
28 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
127 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)