Satellite Definition and 687 Threads

During my work of space vehicle orbit determination, I have been confronted with a difficulty that hasn't been solved until now. When calculating the transition matrix that translate the process noises to the state parameters of position and velocity,how can I work out the partial derivatives of...

Consider a satellite, mass=85 kg, in a circular orbit about Earth. Calculate the period of the satellite given a radius r of its orbit of 2.04 x 10^7 m. I used T^2= (4pi^2/ GM)r^3 Plugging in G= 6.67 x 10^-11 M= 85 kg r= 2.04 x 10^7 and solving for T gave...

Recently found this question, was hoping someone could help me out or get me started on it >_< A radio reciever is set up on a mast in the middle of a calm lake to track the radio signal from a satellite orbiting Earth. As the satelllite rises above the horizon, the intensity of the signal...

i have this lab i have to do for springbreak, here's the problem. "Your and your partner have a consulting company, "SATELLITES AND ASSOCIATES", and you specialty is to determin satellite orbits. Your fims was approached by a colony of lunatics to find the most efficeint solution to their...

A typical GPS (Global Positioning System) satellite orbits at an altitude of 2.0e7 m. Find the orbital speed of such a satellite in km/s. So we know: Mass of the Earth (M) =5.97e24 Radius of the Earth (R) =6.37e6 G is constant =6.67e-11 I used the equation: Final...

A hypothetical spherical planet consists entirely of iron. What is the period of a satellite that orbits this planet just above its surface? Im stumped :/ density of iron is 7860 kg/m^3

a.)calculate at what height above the Earth's surface a satellite must be placed if it is to remain over the same gerographical point on the equator of the earth. b.)what is the velocity of such a satellite? i have no idea how to do the question, but i know it has to do with these equations...

I need to find the orbital radius of a satilite, while only knowing its orbital period. i tried.. a = 4π²r/T² Fnet = Fg a = Gm/r² Gm/r² = 4π²r/T² r = cuberoot(T²Gm/4π²) didnt work out..

I hate this question: I don't know if I'm doing something wrong because it seems so hard. Can i get someones way of doing this question... Communications satellites are placed in orbit so that they remain stationary relatice to a specific area on the Earth's surface. They are given the...

hi, firstly would like to apologise because i don't know where i should be posting this, hope its in the right section.. o:) I have some questions regarding satellites.. hope you guys will enlighten me.. (1) What are the reasons for indoor and outdoor placements of satellites systems...

A satellite is orbiting the Earth at an rate of 96 minutes. The radius of the Earth and the mass is known. How do I calculate how high above Earth the satellite is orbiting? I tried to use formula a= 4*(3.14^2)*(r+6380)/t But I don't have the acceleration, and If I would use Newtons law of...

http://upload.cybermart.ca/2004/hepmesad.gif I can't decide what to do with this question. I am studying for a final. I converted 24 hours to seconds and tried using the Fg = -gmm/r but I don't think that's going to work... any leads? Thanks guys

Im an aussie in yr 10 pathway 1 physics, so I am no Newton. However, does Newtons 1st law apply to a satellite and if so, how?(u don't have to anwer the how). Remember please keep it fairly simple.

URGENT. Simple satellite / rocket separation problem... is my thinking wrong? Rocket mass M-kM and satellite kM (k < 0) are separated by an explosion which releases energy Q and let's rocket M-kM come to a stop relative to the observer and satellite kM continue at velocity v. Initial velocity...

What is the period of a satellite circling the Moon at a height of 90km above the Moon's surface? Can someone get me started please?

A 500 kg satellite is in a orbit at an altitude of 500 km above the Earth's surface. because of the air friction, the satellite eventually falls to the Earth's surface, where it hits the ground with a speed of 2.00 km/s.how much energy was transformed into the internal energy by means of...

Imagine a spherical, nonrotating planet of mass M, radius R, that has no atmosphere. A satellite is fired from the surface of the planet with speed vo at 30 degrees to the local vertical. In its subsequent orbit the satellite reaches a maximal distance of 5R/2 from the center of the planet...

When a satellite is in a circular orbit around the Earth how does a rocket thrust from the satellite effect the orbit. Example when the rocket is fired toward the Earth and another example when the rocket is fired orthogonal to the plane of the orbit. Thank you

I have a satellite antenna in my backyard (the big antenna, not the small one from Direct TV) and I don't know how to use it. I did some research and I think it's called the C-band antenna and I do have to pay around $30 for service/month just like we have to pay for cable TV. I have a receiver...

Dear Forum friends, Here's a problem I can't solve: The space shuttle Atlantis tries to put a satellite in a circular orbit with vo velocity. But they make a mistake and the actual velocity is vo(1+e). I have to find the eccentricity of the orbit when e>0 and e<0, considering |e|<<1...

It was a little after sunset and I noticed a star at an Altitude of about 90 degrees. It wasn’t moving and it looked like any other star, but all of a sudden it started to get dimmer. I thought maybe a cloud was passing over, and there were a few small clouds around, but none I could see...

Hi People ,Could You Please help me with this question... There's a satellite called Meteostat which in the geostationary orbit.Could you explain me why its periodic time is not exactly equal to 24 when it is viewed by an observer positioned at a point on the equator...

Hi people, could someone please help with these: On 19th June 1981, an experimental meterological satellite of mass m=700kg, was placed in a geostationary orbit using the launch vehicle Ariane. Calculate: i. The radius of the geostationary orbit given that the period of revolution of the...

Hi People I had problems solvin this question could you please help me, The question: On 19th June 1981,an experimental meteorological satellite of mass m=700 kg,was placed in a geostationary orbit usingthe launch vehicle Ariane. Calculate: a) the radius of geostationary orbit...

Hi, I study electrical engineering and I was thinking about some projects. I was thinking about constructing a guided zeppelin. I would also add a GPS so I could program its course. I was thinking about the possible problems. I don't know how could it be controlled in the case of wind. I...

Hi folks, If I have the elements of a spacecraft 's (eliptical) orbit (a,e,i,etc) and the lat/long of a ground station, how can I calculate the times at which the spacecraft will be visibile from the groundstation (preferably in terms of time since perifocal passage)? I've been googling for...

If a satellite in orbit has been slowed down, why does it spiral inwards? The explanation I have been given is that the gravitational force on the satellite is constant but the centripetal acceleration has reduced and therefore there is some spare gravitational force to pull the satellite...

Do man-made solar satellites all have roughly the same orientation of orbit around the sun?

Finally something interesting in the news. Check it out . http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html

http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html

I am a first-year physics/chemistry major in First-term Calculus-based Physics. Normally, I have no trouble with my physics assignments, but this problem...man, i have no idea even where to start, even after analyzing it for two hours straight! Any help would be appreciated! 5. You are an...

can a pendulum clock be used in an Earth satellite

hello everybody: A satellite of mass m used in a cellular telephone network is in a circular orbit at a height of h above the surface of the earth. What is the gravitational force on the satellite? Take the gravitational constant to be G , the mass of the Earth to be m_e , and the radius...

OBL Found!:National Security Agency satellite http://quote.bloomberg.com/apps/news?pid=10000087&sid=awJVc6Kiq75c&refer=top_world_news The area is under surveillance from a satellite while forces await orders, the newspaper said in its early Sunday edition, AFP reported. Bin Laden's...

A 1700 kg satellite is orbitting the Earth in a circular orbit with an altitude of 1800 km. a) How much energy does it take just to get it to this altitude? . . . Ok, I just need help getting the setup on this first part. The amount of energy need to get to this altitude would the...

Imagine a universe with nothing in it exept for the earth. Now if you were to put a satalite up in space with a geosyncronized orbit, the gravity of Earth would not pull the object down. but how can that happen if the Earth is not spinning? At least not spinning relative to anything(because...

I have always had a fascination of Pluto, is it labeled as a lost satellite of Neptune, or a planet on it's own because of Charon?