▲ 254 ▼ Russia and China Develop Joint Plan to Counter Starlink; It Involves Physical Destruction of Satellites (militarnyi.com) submitted 1 month ago by EatingOnions@lemmy.world to c/world@lemmy.world 84 comments fedilink hide all child comments
[–] impairedimperator@lemmy.zip 0 points 1 month ago (1 child) If bits of satellite get propelled in the original direction of travel, they will stabilize into a higher orbit. Much like how you can do the rocket equivalent of hitting the gas and end up in higher orbit. permalink fedilink source parent hideshow 2 child comments replies: [–] Hacksaw@lemmy.ca 1 point 1 month ago (2 children) Not without a second impulse at the minimum. There are no stabilising forces like friction or drag in space. permalink fedilink source parent hideshow 4 child comments replies: [–] FooBarrington@lemmy.world 1 point 1 month ago (1 child) They'll slow down whenever they hit their original altitude (or lower), no? Is it impossible for this to result in a stable higher orbit? permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 3 points 1 month ago* (2 children) There is a low altitude and a high altitude point in an orbit. (Apogee for the high point, perigee for the low point) If you slow down at perigee, the altitude of the apogee decreases. If perigee is in atmosphere, then every time you go through that point, you slow down and the apogee decreases again. Sooner or later too much of the orbit is below atmosphere, and whatever it is that was in orbit burns up or falls down. I think. permalink fedilink source parent hideshow 4 child comments replies: [–] l3mming@lemmy.world 4 points 1 month ago Ah, at last someone properly qualified to talk on the matter. So nice to see another graduate from the Kerbal Space Program. permalink fedilink source parent [–] FooBarrington@lemmy.world 4 points 1 month ago (1 child) Ah, so you'd need an impulse around the apogee, and acceleration around just the perigee can't create a stable orbit? Makes sense, thanks! permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent [–] impairedimperator@lemmy.zip -1 points 1 month ago Yes. Gravity! Provided by the orbit-ee. permalink fedilink source parent
[–] Hacksaw@lemmy.ca 1 point 1 month ago (2 children) Not without a second impulse at the minimum. There are no stabilising forces like friction or drag in space. permalink fedilink source parent hideshow 4 child comments replies: [–] FooBarrington@lemmy.world 1 point 1 month ago (1 child) They'll slow down whenever they hit their original altitude (or lower), no? Is it impossible for this to result in a stable higher orbit? permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 3 points 1 month ago* (2 children) There is a low altitude and a high altitude point in an orbit. (Apogee for the high point, perigee for the low point) If you slow down at perigee, the altitude of the apogee decreases. If perigee is in atmosphere, then every time you go through that point, you slow down and the apogee decreases again. Sooner or later too much of the orbit is below atmosphere, and whatever it is that was in orbit burns up or falls down. I think. permalink fedilink source parent hideshow 4 child comments replies: [–] l3mming@lemmy.world 4 points 1 month ago Ah, at last someone properly qualified to talk on the matter. So nice to see another graduate from the Kerbal Space Program. permalink fedilink source parent [–] FooBarrington@lemmy.world 4 points 1 month ago (1 child) Ah, so you'd need an impulse around the apogee, and acceleration around just the perigee can't create a stable orbit? Makes sense, thanks! permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent [–] impairedimperator@lemmy.zip -1 points 1 month ago Yes. Gravity! Provided by the orbit-ee. permalink fedilink source parent
[–] FooBarrington@lemmy.world 1 point 1 month ago (1 child) They'll slow down whenever they hit their original altitude (or lower), no? Is it impossible for this to result in a stable higher orbit? permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 3 points 1 month ago* (2 children) There is a low altitude and a high altitude point in an orbit. (Apogee for the high point, perigee for the low point) If you slow down at perigee, the altitude of the apogee decreases. If perigee is in atmosphere, then every time you go through that point, you slow down and the apogee decreases again. Sooner or later too much of the orbit is below atmosphere, and whatever it is that was in orbit burns up or falls down. I think. permalink fedilink source parent hideshow 4 child comments replies: [–] l3mming@lemmy.world 4 points 1 month ago Ah, at last someone properly qualified to talk on the matter. So nice to see another graduate from the Kerbal Space Program. permalink fedilink source parent [–] FooBarrington@lemmy.world 4 points 1 month ago (1 child) Ah, so you'd need an impulse around the apogee, and acceleration around just the perigee can't create a stable orbit? Makes sense, thanks! permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent
[–] CADmonkey@lemmy.world 3 points 1 month ago* (2 children) There is a low altitude and a high altitude point in an orbit. (Apogee for the high point, perigee for the low point) If you slow down at perigee, the altitude of the apogee decreases. If perigee is in atmosphere, then every time you go through that point, you slow down and the apogee decreases again. Sooner or later too much of the orbit is below atmosphere, and whatever it is that was in orbit burns up or falls down. I think. permalink fedilink source parent hideshow 4 child comments replies: [–] l3mming@lemmy.world 4 points 1 month ago Ah, at last someone properly qualified to talk on the matter. So nice to see another graduate from the Kerbal Space Program. permalink fedilink source parent [–] FooBarrington@lemmy.world 4 points 1 month ago (1 child) Ah, so you'd need an impulse around the apogee, and acceleration around just the perigee can't create a stable orbit? Makes sense, thanks! permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent
[–] l3mming@lemmy.world 4 points 1 month ago Ah, at last someone properly qualified to talk on the matter. So nice to see another graduate from the Kerbal Space Program. permalink fedilink source parent
[–] FooBarrington@lemmy.world 4 points 1 month ago (1 child) Ah, so you'd need an impulse around the apogee, and acceleration around just the perigee can't create a stable orbit? Makes sense, thanks! permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent
[–] CADmonkey@lemmy.world 2 points 1 month ago (1 child) Thats what I remember, someone who plays KSP will probably be along to telle what I forgot. permalink fedilink source parent hideshow 2 child comments replies: [–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent
[–] HerbGrower@slrpnk.net 3 points 1 month ago (1 child) I was just thinking this conversation is clear who has played KSP. Simplified, you have a rocket orbiting around the earth going over both poles in a circular orbit. Above the north pole its 250km high and fires off its rocket all at once. Now its orbit is an eclipse going to 500km above the south pole, but it will return to 250km above the north pole. If you want to increase your altitude over the north pole you would need to accelerate above the south pole. Orbiting is much more about going really really fast than it is about going really high up. Vast majority of the acceleration of launching into orbit goes into acceleration parallel to the ground rather than lifting away from it. permalink fedilink source parent hideshow 2 child comments replies: [–] CADmonkey@lemmy.world 1 point 1 month ago This guy gets it👆👆 permalink fedilink source parent
[–] impairedimperator@lemmy.zip -1 points 1 month ago Yes. Gravity! Provided by the orbit-ee. permalink fedilink source parent