Questions tagged [solar-power]

Questions on obtaining electrical energy from the light of the Sun through either direct photovoltaic conversion or thermal conversion.

25 questions with no upvoted or accepted answers
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7
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79 views

Why are DART's solar panels aligned like this?

I've never noticed this before, but the two solar arrays of NASA and APL's DART spacecraft are at different "levels". In this image, the solar panel on the left extends out from the "...
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70 views

How much did satellites and space exploration enable the development of solar panels?

After the demonstration of silicon solar panels in 1954, Bell Labs struggled to find demand for the solar panels as they were too expensive for most mainstream applications. However, satellites needed ...
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313 views

Were solar concentrators on HS-702 just a stop-gap measure until triple-junction PV cells were available?

According to Gunter's Space Page discussion of early versions of the Hughes HS-702 Bus: The first version of the 702 used solar arrays with concentrators. These concentrators tended to early fogging, ...
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217 views

Low energy cements for Mars and Callisto. Waterless cement for the Moon. Any good candidates?

In the non-polar regions of the Moon and Mercury there is a shortage of volatiles, including hydrogen and nitrogen, so they might be regaded as too valuable to be "wasted" to prepare concrete. ...
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261 views

Power supply for StarShip?

Early renderings of the Mars Colonial Transport showed 2 fan shaped solar arrays deployed while in space. I haven seen any depictions of the StarShip with a solar array either in orbit or standing on ...
4
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83 views

When docked, do Dragon solar panels contribute to ISS mains power?

What it says on the tin. Does a docked Dragon trunk section contribute to the ISS's batteries? I'm aware it would probably be minimal though due to orientation and occlusion of the panels, and when ...
4
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83 views

How efficient was Telstar's solar cell configuration, compared to a flat panel?

Telstar was a series of communication satellites first launched in 1962. The body of the satellite is roughly spherical, with much of the outer surface covered in solar cells. This gives the ...
4
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49 views

Any commercial communication satellite in GEO Orbit that supports 25 KW Power?

As I understand, EchosTAR-11, built by Space systems Loral, was the first 20KW Commercial satellite. (Reference: Recent Successful satellite systems- Visions for future by D.K.Sachdev).
4
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110 views

Have inflatable solar arrays ever been used in practice?

Was trying to find some "experimental" solar panel designs, and came across a rather fascinating design idea, inflatable solar panels. I feel like something this compact would work stupendously for a ...
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95 views

Does the ISS currently use "night glider mode" as part of its solar array positioning plan?

I've seen several references on the site to a mode of ISS solar array position management called "night glider" where the solar arrays are turned to minimize drag when the ISS is on the ...
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46 views

Can it be estimated when a first settlement near the equator would become more economical than one at the midlatitudes of Mars?

Choosing the right place on Mars for a settlement would be of course an important decision because once it's there it would take much time and money to move on to another, better location. Because the ...
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38 views

Using a solar sail to concentrate sunlight at large distances

Space probes which travel to the outer planets usually use RTGs to provide power as photovoltaic cells are impractical at those distances from the Sun. Solar sail could be used to first propel the ...
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147 views

Did Juno just do a plane change? If so, by how much?

There are several reports in the news that the Juno spacecraft executed a very long propulsive maneuver so that it wouldn't pass through Jupiter's shadow. Apparently it would be in dark so long that ...
3
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127 views

Has anyone reported looking for bandgap photoemission from III-V solar panels on spacecraft? Has any success ever been reported?

I have asked a related question in Physics SE: Do III-V based photovoltaics “glow” (photo-luminesce) when illuminated but not loaded? and the answer (as expected, as it must be) is yes. Question: Have ...
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59 views

What are the tradeoffs of circularly unfurling solar panel over linearly deploying solar panels?

Martian landers like Phoenix and Insight uses circularly unfurling solar panels. The regular satellites make use of linearly unfurling panels. What are the primary reasons why linear unfurling ...
3
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1answer
148 views

Is solar panel efficiency defined and measured differently for space vs terrestrial applications?

Since the shape (as well as the integral) of the solar irradiance spectrum above the atmosphere is different than that below it, is the efficiency of photovoltaic solar panels defined and measured ...
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53 views

How often have dust devils saved a Martian lander or rover?

This answer to How are the Mars Rovers maintained? reminds us that ...much to the surprise of the early Mars scientists and rover teams, Mars takes care of the dust problem for us! Mars' typical ...
2
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70 views

What would be the influence of nearby planets on a Dyson sphere or Dyson swarm?

Considering orbital mechanics, I would like to ask what would be the effect of nearby planets such as the Earth or Jupiter on a Dyson sphere. A Dyson sphere is not realistic because of the tremendous ...
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64 views

What is the calculation for the distance VIPER can travel without recharging its batteries?

VIPER, the lunar rover NASA has developed to search for water in the permanently shadowed regions near the south pole of our Moon, will be equipped with (rechargeable) batteries to be able to drive, ...
2
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124 views

Why do the two Apollo 11 PSEP solar panels appear to have different backing materials?

The PSEP (Passive Seismic Experiment Package) was powered by a pair of solar panels mounted on extended arms. The one on the left (when looking towards the LEM) appears to have a matt grey backing: ...
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239 views

How to size Solar Array for Mars Surface

Good morning everyone, I am working on a project for my university where we need to perform a PrePhase A study for a Mars Infrastructure for Propellant production as a means of support for future ...
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33 views

Articulable/tilt-able solar panels planned for, or already tried on Mars or the Moon to get rid of deadly dust accumulation on solar panels?

From Forbes.com's Mars Opportunity And Spirit Rovers Could Have Lived Practically Forever With One Tiny Change: One option would be to install some mechanism such as wiper blades to remove any ...
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41 views

Are there now established classes of solar-electric powered spacecraft?

The NASA.gov press release NASA Awards Contract to Launch Initial Elements for Lunar Outpost says: NASA has selected Space Exploration Technologies (SpaceX) of Hawthorne, California, to provide ...
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93 views

What technology assistance did NASA give to hikers to the South Pole using renewables-only?

The CBS News article Expedition Antarctica: A father and son's journey to save the planet says (in part): The success of the expedition necessitated the pioneering of new equipment that would use ...
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71 views

'Space Transit Habitat' source(s) of energy

What are the sources of energy for a Space Transit Habitat(manned) in terms of both propulsion( after passing over the Low Earth Orbit) and required electric facilities)through a 6-8 month voyage to ...