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HELIOS advanced solar sail concept
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- Опубликовано: 11 дек 2014
- HELIOS is an advanced solar sail concept being evaluated by NASA's Space Technology Mission Directorate (STMD).
NASA's STMD rapidly develops, demonstrates, and infuses revolutionary, high-payoff technologies through transparent, collaborative partnerships, expanding the boundaries of the aerospace enterprise.
www.nasa.gov/sp...
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From the video:
NASA is designing a next-generation solar sail: HELIOS, or High-Performance Enabling Low-Cost Innovative Operational Heliogyro Solarsail.
HELIOS will demonstrate a type of high performance solar sail called a heliogyro. The "sail" of the heliogyro consists of very long reflective membrane strips, or blades.
Blades are rolled onto reels to simplify packaging and deployment. Sunlight reflecting on the blades creates thrust. No on-board fuel is required.
HELIOS requires no additional structure to maintain its shape. This reduces weight and permits higher accelerations and shorter travel times to distant destinations.
HELIOS also steers like a helicopter. Tilting each blade redirects the reflected sunlight and solar pressure. This can be used to change thrust, orientation relative to the Sun or spin rate.
Cameras will capture the motion of the blades, sending proof of deployment to Earth, recording video to compare with computer models and communicating blade motion to the blade control system.
Future HELIOS solar sail missions:
Solar weather early warning
Imaging the poles of the Sun
Travel beyond the Solar System
Loving these new concepts NASA.
Shame they are stolen NASA videos from a guy tryna make a quick buck off RUclips and the rumours make him a suspect!👤👉🏻🍩😖
@@jeffknott7360 , they are just a Langley NASA center.
NASA I LOVE IT! WE JUMPED TO 2040+ !
@Gary B/ Your question is a very good one that eludes common sense. Remember that in Space, these blades will have very little mass or weight per-se (no gravity). Thus, the actual load on them will be very low and based on the spinning (centripetal force versus the perpendicular solar pressure). What we have to worry about is a vibrating string issue as the blades are deployed against the rate of deployment, and change ins centripetal force versus the increased solar pressure as the blade area increases. The video is actually very accurate in how this will happen. It is based on computer simulation that had to be rewritten becasue of the computational round-off errors typical of nonstandard simulations. However, as every good experimentalist requires, we hope to have on-board cameras that compare our simulated theoretical predictions with the real world.
That's actually a really ingenious and simple solution: applying angular momentum to straighten the sails and maintaining it with the pitch
As I recall, the Finnish electromagnetic tether sail project was intended to use such a solution also.
Hello NASA very best mission is the future
WHAT IS THIS INTERSTELLAR SOLAR SAILS?!
Future travel
Somebody. Put. This. On. A. Probe. Now.
cenrifugal force is the proposed method for obtaining rigidity, but models show that this isn't quite enough for stability during and after rotation of the individual blades
Que interesante seria ser conejillo de india para las pruebas de la NASA
It would be cool for the ship to have more blades (weight, efficiency, steering, all not much of a problem. except for weight, but what, it's not like it's trying to get out Jupiter's core.) however, the additional blades are probably for backup/additional thrust/etc. and with all blades deployed it should resemble a square (like lightsail) or a circle.
This is awesome NASA!
@doctor swan. Solar photon pressure for forward motion, and centripetal force for keeping the blades as perpendicular to the photon pressure without exceeding efficient limits. Not an easy problem, but a solvable one.
how these blades remain stright?
what is the name of this song?
How do you get centrifugal force in a vacuum
@systaxed2. Unfortunately, explanations are costly, but this wasn't that much.
Here comes Arthur C. Clarke.
He had similar concepts.
Sasha Naronin NASA does is novelty.
Could the blades double as antennae?
NASA's new comically big sails, flying in the mid 2100s
What a great design! I would love to know more about the capabilities of a craft outfitted with these sails.
What is the thrust like for these sails? Is it possible to use the gravity of solar bodies (or another feature of the sails) to move to lower solar orbits instead of constantly being pushed away from the Sun by the solar wind? Can these sail units be stacked and offset from one another when extended to achieve even greater thrust with a larger surface area covered?
thrust is about one gram for a football field sized sail, in some orbits that goes really close to he sun these sails can get to 100kilometers per second or even more, capable of interstellar travel.
Sean Lumly The thrust is small, but there is no "fuel". The point is to keep these things going for years on end to get to high speeds. They are a lot like Ion engines, but they have a benefit; the closer you get to the sun, the more speed you get. And thus, you can theoretically get huge speeds by sundiving. The bigger problem, rather than speed, for super-fast probes, may now be simply keeping the spacecraft from burning up near the sun. These solar sails are similar to ion engines in both thrust and use. The LightSail-1 solar sail (which will launch in 2016) will be a tiny spacecraft. This is one of the biggest perks of solar sails; they can be made extremely small.
Jack Dets In a small addendum, though, Ion engines have a similar perk. They (basically) rely on electricity, and if you use solar panels, you can get the same effect near the sun. Basically, the sun will be a new center for super-speed missions using both ion engines and solar sails.
sorry for being tedious, posting four of these comments, but the sails lock (yeah bro huh ouch,biff beware aside) the powercell pumps the potential into a thermal flexible sail, with stat placed polarity switches woven in strips of nano pressurised sections. You might need spares if theres a failure in the meteor shield.I recommend enclosure after "burn" of the thrusters.Well seems logical.
@Freedom Jim. The reason why the blades are so far apart is that it is the only way you can get that much area when you have to build something under gravity, that is you need to deploy a spool of material, in this case film, much like a fishing reel. You might suggest that we could simply do that using a large square sail. So, how would you fold such a large thin membrane, how would you make it, yet actually deploy it? The mast and sail concept is size constrained, and is a non-scale limiting design based on the romanticism of tall ships. In order to approach the 1mm/sec^2 versus total weight, there is no other way that I know of that a heilogyro design. Unfortunately, it is not easy.
@Al Ol, Shuttles, Solar Electric Propulsion, and Chemical or Nuclear rocket motors require require inboard fuel, this doesn't. This system doesn't have the impulse power those systems have, but then again, in theory, it can remain operational for a very long time. What do you do when the other systems run out of propellent?
How do you go back towards the sun and earth btw ? Is it possible because as of my understanding this kind of propulsion can only go outwards the sun ; maybe we can use gravitational slingshots to alter curse but still the problem that sun wind is only going outwards solar system
Orbiting the Sun, and tilting the proper sails 45 degree, you can slow the orbital speed (around the Sun) of the spacecraft, which will make it spiraling in toward the Sun.
Hmm, with this sail-blade system (at 1rpm), I'm not sure, tilting is fast enough to achieve this effect.
but with changing the whole spacecraft orientation, and let the sail-blades remaining straight, not tilted, it could work.
Could a sail be somehow used to accelerate in orbit around the sun without veering away from its orbit? What happens if you reach a near luminal velocity in a powerful gravitational field and then veer away? While I'm at it, if gravity increases exponentially with decreasing distance, what effect does it have at the atomic level? Strong force?
@Sad Clown, not so, you can tack. as a for instance, the IKAROS solar sail headed from Earth toward Venus (i.e. towards the Sun), wherein they measured acceleration. Sailors know that you can sail "into the wind" by tacking.
tacking requires that you have a rudder in the water. there's no rudders in space. you cant tack. you can only move away from the sun. you can angle the sails sequentially as they rotate so you get some lateral thrust, but it will always be at less than 90 degrees away from directly away from the sun. that is my understanding. without a rudder, i dont see how you can really tack against the wind.
Aaron King You can angle the sail so that you brake, slowing your orbital velocity and move closer to the sun.
What about tacking into the sun? CME survivability?
±14°C 0R ±19° F FOG TURBINES TO GENERATE POWER UND THREE STATE HVAC 2:30
What would be the speed of this solar sail concept? I know they work better when close to the sun, but would they be considered possible for interstellar travel?
speed is not the issue. acceleration is. it can go as fast as you are willing to wait for it to accelerate up to. no friction = no top speed (well, light speed, theoretically)
There are better options for space travel
but im sure the concept could have a use for something -
like recon missions for satellite imagery on missions where astronauts are deployed to! . - EH? EH?
I think that the main goal of this is to launch a cheaper device really near to the sun, while new data is collected from our star and from the tested concept at the same time.
oh and one more thing, the gas phase of such liquid carbonised perpetual regeneration, I think should be in the heatshield ,i.e as it heats the surface panels it , the gas phase is imperatively shifted back into the panels? The onboard cpu's will naturally calculate alternative settings, now for the thrusters? Looks wow anyway good luck Langley
This is awesome!
@vampdum. You are thinking about unique possibilities such as a conveyer wherein a heilogyro would pick up a payload and head towards the Sun. As it approaches the Sun, the blades would retract to avoid the thermal rise, and using gravity assist, the satellite would sling-shot around the Sun gaining the velocity associated with the gravitational acceleration. Moving away form the Sun, the heilogyro would redeploy the blades for navigation, launch it's payload into deep Space, and then circle back to pick up another payload. Wash and repeat as they say, tacking is possible. Long live the thinkers!
Helios.. Is the sun...
Music please?
Would have been nice with some specs... like top-speed and a comparison to normal shuttles...
VISIONS
isnt the solar sail supposed to be some type of propulsion? what good what it be if the blades are so far apart? or maybe this is not for propulsion but energy? im confused with this whole concept. in my mind it makes more sense for it to be like a giant sheet of whatever they use instead of blades.
Beleshanel Correct, a solar umbrella would need supports out to each end, let alone supports out to the center at least. Soo much weight
Freedom Jim They would make the design a giant circle, if they could. But that cannot be deployed in the same way.
More sails= More centrifugal force upon the entire spacecraft, and the force applied more evenly. This allows the sails to stay taught and with equal propulsion, not needing as many adjustments to compensate for spinning. 2 sails would cause angling if the spin is not fast enough.
How does a sail work in a vacuum? What does it push against if not air molecules?
photons bounce off the sails - then the 3rd law takes over
Aaron King Have you a practical example for that working?
:Dallin-Trent. :Freestone. Spacecraft have already used photon pressure to alter their attitude. IKARUS, Mariner 10 and Kepler for example.
What about going off of Earth?
I would rather have time and resources spent on researching cheaper antimatter production...considering its incredible energy ratio.
And then someone make a mistake in production and we blow half the earth away. Some country makes it into a bomb, and blows up half the earth, or hold us hostage. If we make it, its got to be made far from earth, if at all.
Michael Bissey You can not prevent humans from destroying themselves. It is in their nature. So if it is inevitable why not get it over with already?
What I mean is that the "what if" safety concerns should be ignored by the common people. Common people should be quite because they do not understand the science.
Technically all countries who have nuclear bombs are holding each other hostage.
It have always been a power struggle. Those countries with the largest military power can, will and have been bullying other countries. That is how it works.
Those with nuclear bombs are also bullying countries that have none. To prevent them from developing their own.
Let me quote wikipedia:
"The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament and general and complete disarmament."
Were you one of the people who said the LHC would create a black hole and destroy earth? We are still here.
Besides many countries can already wipe out the human race with bio-weapons. There are laws against creating them, if you can call them that, see "Biological Weapons Convention" but many countries that have money to spend are ignoring it.
The only reason they are not used is because it is not a weapon you can target. It can spread to unintended locations such as the country that created it in the first place.
You should think and really contemplate about that reason.
That is human self-preservation, another thing humans can not escape.
I have to disagree with you on the anti matter. . . On earth Somethings are to dangerous. . . On Earth only. Even a kilogram of Anti matter could destroy our planet. A.M. comes into contact with Matter it'll release 100% of the energy in the destruction of the
2 opposites. Now around a different planet or a different orbit around the sun, that is safer. This IS what most scientists say. The Large Hadron Collider, is different, most people who understand what the scientists are doing there and the "risks" say that it is safe.
If I understand the concept correctly. This can only be used in one direction and that is taking stuff away from the sun and gets inefficient the further you get from the sun.
That looks close to earth. Have they thought about space debris? 3 micron thickness. Is it impact resistant?
***** I see this tech in equal level as an Ion thruster. Unpractical.
Compared to Ion thruster, how fast is this? Have anyone done the math?
So I could go from Pluto to Earth? How is that possible when the sun is always pushing on the sail away from it?
I just realized I know nothing of sailing a boat. Then again boats have differently shaped sails.
***** Gravity is slow. That method would take long. Thank you for answering though. I'll put it on my to research list. I should nag official nasa hype machine for an answer. It would be faster.
variable voltage mercury? for the brittling stress loads unsure but their are many micro composite elemental hybrids in the blade design , Wheres the fly NASA come on tell us pls. guess that will control breaking for landing.The spin, complex that light? photon pulse code from go? you dudes are rude man. WTG
oh and the rubber mats? I mean the the sail's , Buckyballs conceive a lot of streamlining until liberation. Well anyway looks nice and didn't Bob Lazar already say about flexible aspects of such craft. Sorry just frustrated of how quick technology advances.
I don't understand how those blades with such thin material are staying rigid? They should be flapping all over the place no?
In space, there is nothing to cause it to flap.
deltaboy2011
YOU KNOW WHAT I MEAN GEEZ
deltaboy2011 Other than numerous debris that would collide with the huge blades
Paul Dawg
Indeed, it would cause holes and destroy it. But since space doesn't cause it to flap like wind in sails, this doesn't apply.
deltaboy2011
again what keeps these thin layers straight and rigid to be able to hold up against the pressure of the suns light?
aqui na Terra não existe plano "B" caso a matriz energética não mude.. porque não salvar o paraíso que é menos surreal????
pq isso não depende da NASA.
O hidrogenio
e Nasa inseparaveis!!!!! hidrogenio e planeta terra impossivel?? Esse seria o plano para a politica da biosfera....
That will never work!
ให้คุณรู้ได้ยังไงผมกำลังคิดเรื่องปีก
I'll bet the blades will be made of carbon nenotupes.
Charles 7 just really good mylar :^)