Geostationary Orbits (Q17) (1 Viewer)
- Thread starter Stopsign
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RingerINC
BBoy OG Loc Gangsta
all i could think of were gravity and drag up in orbit... i said drag was minimal compared to that of leo.Stopsign said:
And during reentry the whole g-forces speel on people getting knocked the fuck out, also gravity.
And i went into a bit on what a geo stat was at the beginning and what needs to be taken into account on re entry to minimise forces.
basically any orbit undergoes a centripetal force of gravitational attraction to the earth. there was also newtons gravitational force of attraction between the earth and the spacecraft. as well as the frictional forces due to the shuttle re-entering the earths atmosphere.
ohh plus, the g-forces acting on the space travelers, etc
there were a lot of forces
ohh plus, the g-forces acting on the space travelers, etc
there were a lot of forces
hyparzero
BOS Male Prostitute
Marking Scheme:
Mentioning Gravity .... 1 Mark
Mentioning centripetal acceleration is perpendular to earth's gravity... 1 Mark
Mentioning thrusting force to throw spacecraft off the orbit... 1 Mark
Mentioning that during re-entry, Spacecraft subject to DECELERATION forces ... 1 Mark
Saying that the effects of gravitational pull is neglible during re-entry ... 1 Mark
Conversion of Kinetic Energy to heat during deceleration due to drag forces... 1 Mark
Mentioning Gravity .... 1 Mark
Mentioning centripetal acceleration is perpendular to earth's gravity... 1 Mark
Mentioning thrusting force to throw spacecraft off the orbit... 1 Mark
Mentioning that during re-entry, Spacecraft subject to DECELERATION forces ... 1 Mark
Saying that the effects of gravitational pull is neglible during re-entry ... 1 Mark
Conversion of Kinetic Energy to heat during deceleration due to drag forces... 1 Mark
They also may be after the retarding force mention by myeewyee to slow you down and result in you losing altitude.
They will also be looking for the effects of these forces as it is analyse. So at a guess they will probably be looking for you to describe three forces and then describe the effect they have on the space craft.
They will also be looking for the effects of these forces as it is analyse. So at a guess they will probably be looking for you to describe three forces and then describe the effect they have on the space craft.
shinji
Is in A State Of Trance
i thought the question asked the forces acting on the Spaceship .. not the people.
anyway, forces i described:
-> centripetal force
-> velocity of the spacecraft
-> acceleration towards re-entry
-> friction caused by atmosphere tht acts upon the earth .. .
i forgot to mention g-forces.
anyway, forces i described:
-> centripetal force
-> velocity of the spacecraft
-> acceleration towards re-entry
-> friction caused by atmosphere tht acts upon the earth .. .
i forgot to mention g-forces.
it was specific to the stage where they were orbiting around the earth. the only two forces you had to bullshit about were earth's gravity and centripetal force - stating that velocity is perpendicular to the gravity as it goes around
they didn't ask for the re-entry because it's already been asked in previous years and wanted to expand the questions
they didn't ask for the re-entry because it's already been asked in previous years and wanted to expand the questions
suchet_i
derka derka
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another force is thrust coz they use rocket boosters to slow down the re-landing.. then u can talk about conservation of memontum with that and stuff. i also talked a bit about weightlessness and explained that
hyparzero
BOS Male Prostitute
During re-entry, space craft SLOWS DOWN not SPEED UP. thus, its deceleration.shinji said:
Hope you wrote that.
No spacecraft has EVER used rocket boosters to slow themselves down for landing...suchet_i said:
Bricnic
Lookatmy Member
I talked about:
*the lack of a weight reaction force while in orbit, as the craft was in constant freefall
*the minimal friction due to the very thin atmosphere at that height
*the slight increase in g as the craft approaches Earth
*the gradually increasing friction due to increasing density of atmosphere, and finally
*the weight reaction force being restored to the craft as it touches down, giving it a standard G force that all objects on the surface experience.
*the lack of a weight reaction force while in orbit, as the craft was in constant freefall
*the minimal friction due to the very thin atmosphere at that height
*the slight increase in g as the craft approaches Earth
*the gradually increasing friction due to increasing density of atmosphere, and finally
*the weight reaction force being restored to the craft as it touches down, giving it a standard G force that all objects on the surface experience.
hyparzero
BOS Male Prostitute
the question said ANALYSE, so you'll need to specify WHAT forces acted on the space craft, WHY they acted the way they did and HOW these forces played a part during re-entry.Mumma said:
Simply stating that there exists atmospheric drag isn't analysing - that's just outlining.
retrofiring?hyparzero said:
Don't worry guys, i don't think you were meant to address every single force occuring because then that would be a waste of time. If you did the implications of the forces, e.g. g-forces => leads to unconsciousness blah blah and stuff like that you should still get marks for it because you're describing the implications of the forces (part of what ANALYSE means)
If you think you've addressed everything then you probably have... cheer up and dw
