Questions tagged [solar-sails]

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Sunlight on an object

I'm not entirely sure how I should be phrasing this question, but it's part of a project I'm working on. It's all about finding reflectivity by way of a telescope. We figured the first way to proceed ...
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Is it possible that D-T graph could be linear , but V-T graph will be log?

So , I have plotted the V-T & D-T plots for solar sail using the parameters (Using euler's method for solving the ODE based on Solar sail, estimate force & Here's my program :- https://github....
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70 views

Circular Reflection

How efficiently can light be turned into angular momentum? Light can be contained for long paths via total internal reflection with some steady decline in intensity due to absorptivity of the medium. ...
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Solar Sailing with Optical Amplification

The solar sail has been proposed as a means of carrying payloads into deep space without traditional thrusters. Most approaches seem to require a thin reflective chute that unfurls to a shape oriented ...
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How will the Starshot swarm accelerate perfectly?

I was reading about the Breakthrough Initiative Starshot and I a question came to mind. From my understanding, the "mothership" will focus powerful lasers on each of the tiny ships, accelerating them ...
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Could focused sunlight ignite a pellet of lithium deuteride?

This is a basic question, but it something I have been wondering ever since I learned about inertially confined fusion. In the ICF reactor configurations I am aware of, the drivers that are used to ...
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Radiation pressure on stellar sails [duplicate]

Electromagnetic radiation transmits energy to the sail by reflection or absorption. Does it mean electromagnetic radiation also loses velocity and gain mass in the process?
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Would a time-revering (or phase conjugate) mirror make a good light sail?

In hard science fiction and speculative essays, we hear of light sails being driven by home-based lasers. Would a time reversal mirror make a more efficent sail? I’m thinking that the light (and ...
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Solar sail and Ship sail difference in function

Solar sails seem to operate more like parachutes than proper sails. Any mariner knows that following the wind is a fairly slow means of movement compared to moving perpendicular to the wind'speed ...
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Could light sails (solar sails) in series accelerate each other?

Lets say we build 3 light sails that each also contain a forward facing laser. I'll attempt to draw that by the following symbol: |-> We arrange them in space ...
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3answers
157 views

Deflection Effects on a Spinning Solar Sail

Suppose I have a solar-sail-powered starship flying directly away from a star. The sail is flat and perpendicular to the direction of travel. Now, in order to make the trajectory more stable (we think)...
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Solar sail, estimate force

I'm trying to get an estimative for how much force is applied on a solar sail by solar radiation. So the first question is elastic or inelastic collision? Elastic colision provides a change in ...
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1answer
415 views

Redshift of a reflected photon from a solar sail

Can someone help me understand my mistake here? I'm thinking of a photon travelling with momentum $p=h/\lambda$ which reflects off a solar sail of mass $m$ travelling with momentum $p_0$ in the same ...
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How can I calculate the relationship between power and acceleration for a beam driven photon sail?

I am writing a novel, and although I have a background in physics, I am unsure of the exact equations to use. Specifically: For a photon-sail ship, how powerful would a driving laser need to be in ...
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How does the solar sailing concept work?

Wikipedia describes solar sailing as a form of spacecraft propulsion using a combination of light and high speed ejected gasses from a star to push large ultra-thin mirrors to high speeds. I ...