flying helis at gravity 9.8 you like it?

[Steve]

I think you mean 'trekkie'

[FuturaSE]

The moon's mass is eighty times less than the Earths..

I'm off for a large one.
Cheers!

NICE ONE M8

The Moon has approximately 1/4 Earth's diameter, 1/50 Earth's volume, and 1/80 Earth's mass (1.2%). Earth is very dense overall (it is the densest planet in the Solar System), but the Moon is light for its size. The difference is partly because Earth has a large core of iron and other heavy metallic elements, while the Moon has only a small core, if it has a core at all. The Moon's surface gravity is 1/6 of Earth's, and escape velocity from the surface is about 1/5 of Earth's.

[FuturaSE]

FOR THOSE WHO ARE PLANNING to GO TO MARS IN 2023

http://applicants.mars-one.com/

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The gravity on Mars is much lower than it is here on Earth, 62% lower to be more precise. That means that Martian gravity is 38% of Earth’s. A person weighing 100 kg here would tip the scales at 38 kg there.

Read more: Gravity on Mars

[FuturaSE]

can be a good point for sollicitation

why on mars?

"i want to fly rc helicopter at mars gravity im addicted I WANT TO FLY THESE BASTARDS AT ALL GRAVITYS SIR"

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[Delarado]

This has been the most surreal thread I've read on here, and also very entertaining.

I think I need a babel fish to work out what you are all talking about.

Anyone for some vogon poetry before we vaporise the earth for the intergalactic expressway and then migrate to the moon to fly our helis?

[FuturaSE]

FOR SURE IN 100 BILLIONS GALAXIES
100 billion galaxies
100 billion galaxies
100 billion galaxies

we are not the most smartest

[Rotorhead]

[QUOTE=dillwhacker;1013902][QUOTE=Rotorhead;1013892]
because of the earths spin space agencies prefer to base their launch sites near there

Isn't it because the rotational velocity at the equator gives them a slingshot effect?

That's what I was saying, that counteracts gravity slightly, which is less there anyway, so double bonus.

[Zeeflyboy]

flying helis at gravity 9.8 you like it?

This is a great sci-fi story if you like gravity effects:

If I understand the description of () correctly, he's actually got that backwards... The gravity would be much stronger at the equatorial region than at the poles.

You can see the effect on earth, which is very slightly "squashed" sphere which bulges out at the equatorial region (ie the opposite of that book's planet). Due to this bulge, the effect of gravity at the equator on anything at the surface is ever so slightly weaker as they are further from the centre of the earth... In the example of that book, the gravity felt at the surface on the poles would be weaker than that felt at the equator for the same reason.

You also get a double whammy at the equator though as mentioned, the centrifugal "force" contributing to a reduction in observed gravitational force. It's actually a combination of the two factors though.

[pgkevet]

If I understand the description of () correctly, he's actually got that backwards... The gravity would be much stronger at the equatorial region than at the poles.

You can see the effect on earth, which is very slightly "squashed" sphere which bulges out at the equatorial region (ie the opposite of that book's planet). Due to this bulge, the effect of gravity at the equator on anything at the surface is ever so slightly weaker as they are further from the centre of the earth... In the example of that book, the gravity felt at the surface on the poles would be weaker than that felt at the equator for the same reason.

You also get a double whammy at the equator though as mentioned, the centrifugal "force" contributing to a reduction in observed gravitational force. It's actually a combination of the two factors though.

in Mission of Gravity the alien world is also flattened as you'ld expect as a severely squashed sphere..almost a disc..so again the garvity is huge (100G) at the poles and only 3G at the equator. One of the cool things is that the alien sea captain's ship is a raft. When they get to the rim they are fascinated to see a hollowed boat-shaped vessel and tow it back to show this new science of air displaced ship building. On the trip back to higher gravity this boat slowly sits deeper in the water and finally sinks...

[trillian]

A long time ago I thought about the idea of a large indoor stadium on the moon and what gymnastics could be like in 1/6th gravity. Strength elements would be almost meaningless against just your own bodyweight but amazing acrobatics would be possible for floor exercises, vaults etc.

Or baskeball, imagine how high they could jump, you could put the basket 20 feet high !

Things get interesting when you take a vehicle, for example an indoor motocross track on the moon. If a typical motocross bike weighs, lets say 220 lbs on Earth and has 35 horsepower, on the moon it would only weigh about 37 pounds! But the mass actually stays the same so it's hard to say what the accelaration would be like. Traction would be a much bigger problem but jumps would be insane.

[pgkevet]

Acceleration should be the same or worse... as in less traction: need moon tires! But no wind resistance. As for the jumps... going to need a lot of buses..

edit: slight problem with getting the engine to run....

[trillian]

Acceleration should be the same or worse... as in less traction: need moon tires! But no wind resistance. As for the jumps... going to need a lot of buses..

edit: slight problem with getting the engine to run....

I said an indoor stadium... there would be air.

[pgkevet]

I said an indoor stadium... there would be air.

OK.. thought it was just to keep the riff-raff out..

[trillian]

OK.. thought it was just to keep the riff-raff out..

Well, it would depend which neighborhood you build the stadium in.

[pgkevet]

Well, it would depend which neighborhood you build the stadium in.

Sooo...not on the dark side or where the poles are? ..place is full of loonies <exits at a run...>