Questions tagged [dragonfly]

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1answer
133 views

From what altitude will they cut Dragonfly helicopter loose on Titan and make it land itself, and what are the main factors determining this altitude?

Titan's surface pressure is about 1.5 bar and because the surface gravity is low pressure falls off much more slowly with altitude than it does on Earth. From Wikipedia's Atmosphere of Titan; vertical ...
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0answers
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How do they know that the Dragonfly helicopter won't get quickly coated in tholin muck? Any desliming technology for camera lenses or propellors?

From Air and Space's Dragonfly Is the First Aircraft Built for the Outer Solar System; NASA returns to Saturn’s largest moon with a rover that can fly. which I just found in this heavily-sourced ...
7
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1answer
156 views

How does the Dragonfly helicopter for Titan compare to Perseverance, Ingenuity and a human in terms of size, mass, weight and daily range?

It wasn't until Are Perseverance's wheels really this big? that I realized just how big Curiosity and Perseverance probably are. Writing What is the pop-up circular disk with spiral pattern in ...
7
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1answer
512 views

What is the pop-up circular disk with spiral pattern in this NASA animation of the Dragonfly helicopter for Titan? Antenna? Kind, band, target?

At 00:36 in the June 2019 NASA video Dragonfly: NASA's New Mission to Explore Saturn's Moon Titan the animation shows it landing then deploying a circular disk with ...
3
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0answers
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Closed oxygen cycle methane-burning internal combustion engine for Titan rover/helicopter? Works like a battery together with RTG that won't freeze?

@TildalWave's answer to Methane internal combustion engines for rovers on Mars and Moon. Feasibility? raises the possibility of using Titan's atmospheric methane for an energy source as long as you ...
6
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2answers
283 views

How can they be so sure that Dragonfly will "freeze to death" as opposed to simply (and eventually) running out of RTG power? (238Pu decay)

tl;dr: "...will probably freeze to death...before it runs out of power..." If power keeps it from freezing to death and it hasn't run out of power, why would it freeze to death? Space.com's ...
5
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3answers
275 views

Could a helicopter escape Titan?

Titan has 50% denser atmosphere than Earth and a fraction of the gravity. Could a helicopter-like probe, similar to the Dragonfly or Ingenuity, generate enough lift and velocity to escape Titan? Or ...
20
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3answers
4k views

Why are we interested in visiting the giant planets' icy moons?

I have noticed lately that future missions by NASA and ESA are targeted towards the moons of Jupiter and Saturn. They mention that they might be a possibility of life; the icy moons they are focusing ...
8
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1answer
187 views

Can Dragonfly make it to one of Titan's Lakes?

Dragonfly is a drone set to land on Titan in the mid 2030s. As I've read, Saturn - and thus, Titan - won't be in the right orbital position at the time to allow for direct contact with the drone if it ...
6
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1answer
206 views

How will Dragonfly (mission to Titan) keep from flipping over?

The animation in the announcement article shows landing on a perfectly smooth surface. That's not what the photo from Huygens shows - a lot of rocks and pebbles. And as anyone who played with drones/...
12
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1answer
804 views

Why are planetary probe RTGs tilted at a jaunty angle?

This image from here: Does the Dragonfly project (quadcopters on Titan) envision attached RTG's or would they be static and revisited for charging? and this image show that the RTGs on these two ...
1
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1answer
236 views

Does the Dragonfly project (quadcopters on Titan) envision attached RTG's or would they be static and revisited for charging?

In this answer I link to the Phys.org article Researcher sets eyes on Saturn's largest moon which describes the Dragonfly project, a way to explore extended areas of Titan's surface difficult to probe ...
6
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1answer
137 views

Piggybacking to Enceladus

The latest NASA New Frontiers selection did not select any finalist proposals to Enceladus, which is one of the most promising targets for life in the solar system. It did however select Dragonfly, ...