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1287 clicks; posted to STEM » on 20 Nov 2021 at 10:53 PM (9 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



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2021-11-20 11:04:27 PM  
Pretty cool to see it actually work. Would be too slow for manned-transport, but maybe deep space probes
 
2021-11-20 11:14:34 PM  
We'll have these in no time at all:
th.bing.comView Full Size
 
2021-11-21 1:22:44 AM  
I would love to see a mission deploying a couple hundred of these cubesat lightsails so we can get good closeups of most everything in the solar system in just a couple decades. This sail showed it could be done very cheaply.
 
2021-11-21 3:20:54 AM  

ExYank: I would love to see a mission deploying a couple hundred of these cubesat lightsails so we can get good closeups of most everything in the solar system in just a couple decades. This sail showed it could be done very cheaply.


It would take centuries for those to reach beyond jupiter. Its a proof of concept sure, but for what actually practical use? The time it takes to get anywhere makes it rather pointless
 
2021-11-21 3:25:56 AM  

lifeslammer: ExYank: I would love to see a mission deploying a couple hundred of these cubesat lightsails so we can get good closeups of most everything in the solar system in just a couple decades. This sail showed it could be done very cheaply.

It would take centuries for those to reach beyond jupiter. Its a proof of concept sure, but for what actually practical use? The time it takes to get anywhere makes it rather pointless


Could we not give them a good shove first?
 
2021-11-21 4:01:56 AM  
Not to worry, I've been pumping out extra methane for the same period.  With any luck the climate will collapse before humans can infect over worlds.
 
2021-11-21 11:34:50 AM  

ExYank: I would love to see a mission deploying a couple hundred of these cubesat lightsails so we can get good closeups of most everything in the solar system in just a couple decades. This sail showed it could be done very cheaply.


A couple hundred of these cubesat lightsails would just make for a pretty meteor shower.
 
2021-11-21 6:19:09 PM  

lifeslammer: ExYank: I would love to see a mission deploying a couple hundred of these cubesat lightsails so we can get good closeups of most everything in the solar system in just a couple decades. This sail showed it could be done very cheaply.

It would take centuries for those to reach beyond jupiter. Its a proof of concept sure, but for what actually practical use? The time it takes to get anywhere makes it rather pointless


You're forgetting the constant acceleration. Once you're outside the Earth's atmospheric drag, the solar push will eventually accelerate a craft to at least 0.002c, possibly more.

An efficient graphene lattice sail around a kilometer across could drop 10 tons of cargo onto Mars from a swing-by aerobrake in less than a year.

An inflatable beryllium "pusher" sail could reach the Oort Cloud in 30 years through a slingshot orbit that passes the sun at around 0.2 AU.

At this point, it's just a matter of figuring out how to scale it up and build it.
 
2021-11-22 6:46:30 AM  
An inflatable beryllium "pusher" sail could reach the Oort Cloud in 30 years through a slingshot orbit that passes the sun at around 0.2 AU.

Is there a replacement beryllium sphere on board?
 
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