Author Topic: Space  (Read 1118 times)

Offline cav58d

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« on: November 04, 2005, 12:07:34 AM »
Okay this is prolly a stupid question...But hey, no question asked is stupid right?

Okay now in space there is zero gravity as we all know....

Now say the shuttle is cruising straight and level, and proceeds to abruptly pitch nose down....What happens?  nothing right?  since there is zero G, they would not get the feeling of negative gravity like pitching the nose of an aircraft down....

wow i must sound like an idiot
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Offline Shane

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« Reply #1 on: November 04, 2005, 12:10:33 AM »
in space, no one can hear you anyway.

if something caused the shuttle to pitch abruptly, in the absence of a countering force, it will continue to pitch 360 degrees, over and over; done quickly and long enough this will generate sufficient centrifugal forces to create...

artificial gravity.

duh.

:cool:
« Last Edit: November 04, 2005, 12:14:10 AM by Shane »
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Offline 2bighorn

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Re: Space
« Reply #2 on: November 04, 2005, 12:26:41 AM »
Quote
Originally posted by cav58d
Okay this is prolly a stupid question...But hey, no question asked is stupid right?

Okay now in space there is zero gravity as we all know....

Now say the shuttle is cruising straight and level, and proceeds to abruptly pitch nose down....What happens?  nothing right?  since there is zero G, they would not get the feeling of negative gravity like pitching the nose of an aircraft down....
 
You feel G forces because of inertia and inertia is depended on mass not the gravity.

Offline Naytch

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Re: Space
« Reply #3 on: November 04, 2005, 12:44:04 AM »
Quote
Originally posted by cav58d
Okay now in space there is zero gravity as we all know....

Now say the shuttle is cruising straight and level, and proceeds to abruptly pitch nose down....What happens?  nothing right?  since there is zero G, they would not get the feeling of negative gravity like pitching the nose of an aircraft down....


No, they would feel nothing. If they were near a gravitational feild, like near the sun, then probably a bit of a jolt.

But anyway, you must remeber that in space there's no such thing as down. Which is why that movie 'Wing Commander' sux bcuz he said that he'd go vertical to shake the bandit of his tail, but he forgot that in space there's no such thing as up!

Offline 715

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« Reply #4 on: November 04, 2005, 12:54:36 AM »
G forces have nothing to do with gravity at all.  G is just the unit used and is equal to the gravitional force at Earths surface.  If you suddenly change direction that means you must have been acted on by a force and you will feel that force.  So in your example if the Shuttles thrusters fired so as to pitch the Shuttle up you would feel a downward force (positive Gs) if you were in the cockpit (and if you were strapped in) and you would feel a negative G or upward force if you were on the tail.  (But that would be the least of your worries as there is no air at that end)  The force you 'feel' is your own inertia counteracting the applied force; at the nose you are pushed downward into your seat because your body doesn't want to move and the seat is being pushed up against it by the thrusters.

Newtons laws and all.

Offline Angus

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« Reply #5 on: November 04, 2005, 01:47:39 AM »
Nasa uses Newton.
Newton works in space.
G force works in space.
Centrifugal force works in space.
Take a loop in space and you will feel your own weight.
It was very interesting to carry out the flight trials at Rechlin with the Spitfire and the Hurricane. Both types are very simple to fly compared to our aircraft, and childishly easy to take-off and land. (Werner Mölders)

Offline mechanic

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Re: Re: Space
« Reply #6 on: November 04, 2005, 02:05:12 AM »
Quote
Originally posted by Naytch
No, they would feel nothing. If they were near a gravitational feild, like near the sun, then probably a bit of a jolt.

But anyway, you must remeber that in space there's no such thing as down. Which is why that movie 'Wing Commander' sux bcuz he said that he'd go vertical to shake the bandit of his tail, but he forgot that in space there's no such thing as up!


dont mean to be a pain, but actually there is always an up and down for an object with mass, and a defined 'right side up' and 'bottom side down' configuration. eg: person, space craft, apple.

despite there being no dimmensions in space, you can still term your movements of your own personal horizontal and vertical axis.

now i feel smart!
And I don't know much, but I do know this. With a golden heart comes a rebel fist.

Offline Flayed1

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« Reply #7 on: November 04, 2005, 02:32:04 AM »
I have to say this is one of the most inteligent threads on this board in a long time :)    Keep it up. :P
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Offline Naytch

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« Reply #8 on: November 04, 2005, 02:34:09 AM »
True, but then it'd be regarded as upWARD or downWARD, not up or down.

Up and down is used in general directions e.g. up is the direction pointing towards the sky, and down towards the ground. Now, with that in mind, imagine you were lying down on your belly, looking at the ceiling. Even though the sky is still directly in front of you, it is still regarded as "up".

But since there's no such thing as sky or ground in space, then you talk about directions RELATIVE to the object of mass, and then it does not remain up or down, but a suffix of -WARD is added to denote direction relative to the object of mass.

Let's say you were in a space suit and an asteroid was above your head. You would say that it was above you, and that you would have to turn upWARDS to face it.

Now if you were in a plane in the atmosphere and a bandit was above you, you'd say it was above you, but you'd only need to pull UP to face it, understand?

Now I feel smart :D

Offline Slash27

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« Reply #9 on: November 04, 2005, 02:47:01 AM »
You watched 'Wing Commander':rofl

Offline Naytch

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« Reply #10 on: November 04, 2005, 02:54:14 AM »
Biggest waste of time EVAR!!!

Uhh, wait...


whut?

Offline mechanic

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« Reply #11 on: November 04, 2005, 04:10:34 AM »
dang, now i feel like you're smart and im not so smart :(
And I don't know much, but I do know this. With a golden heart comes a rebel fist.

Offline Heretik

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Re: Re: Space
« Reply #12 on: November 04, 2005, 06:31:34 AM »
Quote
Originally posted by Naytch
. Which is why that movie 'Wing Commander' sux bcuz he said that he'd go vertical to shake the bandit of his tail, but he forgot that in space there's no such thing as up!


That's neither the beginning nor the end of why that movie sucks.

Offline J_A_B

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« Reply #13 on: November 04, 2005, 07:57:58 AM »
"That's neither the beginning nor the end of why that movie sucks."

The real reason for the motion picture suckage would be the fact that the games (Wing Commander 3 and 4) had both a better plot and better actors than the Hollywood POS.  



"since there is zero G, they would not get the feeling of negative gravity like pitching the nose of an aircraft down...."


That feeling of "negative gravity" isn't caused by gravity at all; it's caused by inertia.  Inertia works perfectly fine in deep space so you'd still feel it.  Actually, given the extreme velocities objects in space move at, if a ship "abruptly" changes its vector the occupants would likely be injured or die because of the extreme forces.  This is why most science-fiction spaceships are described as having some sort of "inertial dampers".

J_A_B

Offline ATA

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Re: Space
« Reply #14 on: November 04, 2005, 11:07:07 AM »
Quote
Originally posted by cav58d
Okay this is prolly a stupid question...But hey, no question asked is stupid right?

There are no stupid questions,theres only stupid people.
Kidding.