Iranian Space program
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SOHEIL
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Maybe !
SouI
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Well, considering it weights 50 kg, I suppose it does not have thrusters on it for balancing its route..
SouI
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He is just taking records of its route, to see if things are going on as expected.
kaku1
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Its 50 Kg sat, means a nanosat.his days are numbered. From 2days to a month max.
What he trying to prove?
SOHEIL
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Our satellite falling !
kaku1
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Nope it isnt.
Nano sats are not designed for sustaining years, but for just month or days. Even a nano sat is for some experiments, like communication, and thats all, this can be done in days.
What the use for keeping nano sat for years?
The SC
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FAJR
NORAD ID: 40387
Int'l Code: 2015-006A
Perigee: 218.0 km
Apogee: 363.9 km
Inclination: 55.5 °
Period: 90.2 minutes
Semi major axis: 6661 km
Launch date: February 2, 2015
Source: Iran (IRAN)
Comments: FAJR is the new generation of Omid (Hope) satellite, which was designed and manufactured by Iranian experts in 2009. According to IRNA news agency, the satellite was locally made, as was its launcher. Fajr is capable of staying in the space for 1.5 years and taking and transmitting high-quality and accurate pictures to stations on Earth. The orbiter is technically characterized by an orbit which could promote from 250 to 450 kilometers through a thruster or an engine. Equipped with GPS navigation system, Fajr is the fourth Iranian-made satellite which was put into orbit after three others between 2009 and 2012.
FAJR Satellite details 2015-006A NORAD 40387
--------------------------------------------------------
Understanding orbits
There are a few common ways of understanding orbits:
If the cannon fires its ball with a low initial velocity, the trajectory of the ball curves downward and hits the ground (A). As the firing velocity is increased, the cannonball hits the ground farther (B) away from the cannon, because while the ball is still falling towards the ground, the ground is increasingly curving away from it (see first point, above). All these motions are actually "orbits" in a technical sense – they are describing a portion of an elliptical path around the center of gravity – but the orbits are interrupted by striking the Earth.
If the cannonball is fired with sufficient velocity, the ground curves away from the ball at least as much as the ball falls – so the ball never strikes the ground. It is now in what could be called a non-interrupted, or circumnavigating, orbit. For any specific combination of height above the center of gravity and mass of the planet, there is one specific firing velocity (unaffected by the mass of the ball, which is assumed to be very small relative to the Earth's mass) that produces a circular orbit, as shown in (C).
As the firing velocity is increased beyond this, elliptic orbits are produced; one is shown in (D). If the initial firing is above the surface of the Earth as shown, there will also be elliptical orbits at slower velocities; these will come closest to the Earth at the point half an orbit beyond, and directly opposite, the firing point.
At a specific velocity called escape velocity, again dependent on the firing height and mass of the planet, an open orbit such as (E) results – a parabolic trajectory. At even faster velocities the object will follow a range of hyperbolic trajectories. In a practical sense, both of these trajectory types mean the object is "breaking free" of the planet's gravity, and "going off into space".
About Orbital decay:
Orbits can be artificially influenced through the use of rocket engines which change the kinetic energy of the body at some point in its path. This is the conversion of chemical or electrical energy to kinetic energy. In this way changes in the orbit shape or orientation can be facilitated.
Orbit - Wikipedia, the free encyclopedia
- Single tracking
- Predictions
NORAD ID: 40387
Int'l Code: 2015-006A
Perigee: 218.0 km
Apogee: 363.9 km
Inclination: 55.5 °
Period: 90.2 minutes
Semi major axis: 6661 km
Launch date: February 2, 2015
Source: Iran (IRAN)
Comments: FAJR is the new generation of Omid (Hope) satellite, which was designed and manufactured by Iranian experts in 2009. According to IRNA news agency, the satellite was locally made, as was its launcher. Fajr is capable of staying in the space for 1.5 years and taking and transmitting high-quality and accurate pictures to stations on Earth. The orbiter is technically characterized by an orbit which could promote from 250 to 450 kilometers through a thruster or an engine. Equipped with GPS navigation system, Fajr is the fourth Iranian-made satellite which was put into orbit after three others between 2009 and 2012.
FAJR Satellite details 2015-006A NORAD 40387
--------------------------------------------------------
Understanding orbits
There are a few common ways of understanding orbits:
- As the object moves sideways, it falls toward the central body. However, it moves so quickly that the central body will curve away beneath it.
- A force, such as gravity, pulls the object into a curved path as it attempts to fly off in a straight line.
- As the object moves sideways (tangentially), it falls toward the central body. However, it has enough tangential velocity to miss the orbited object, and will continue falling indefinitely. This understanding is particularly useful for mathematical analysis, because the object's motion can be described as the sum of the three one-dimensional coordinates oscillating around a gravitational center.
If the cannon fires its ball with a low initial velocity, the trajectory of the ball curves downward and hits the ground (A). As the firing velocity is increased, the cannonball hits the ground farther (B) away from the cannon, because while the ball is still falling towards the ground, the ground is increasingly curving away from it (see first point, above). All these motions are actually "orbits" in a technical sense – they are describing a portion of an elliptical path around the center of gravity – but the orbits are interrupted by striking the Earth.
If the cannonball is fired with sufficient velocity, the ground curves away from the ball at least as much as the ball falls – so the ball never strikes the ground. It is now in what could be called a non-interrupted, or circumnavigating, orbit. For any specific combination of height above the center of gravity and mass of the planet, there is one specific firing velocity (unaffected by the mass of the ball, which is assumed to be very small relative to the Earth's mass) that produces a circular orbit, as shown in (C).
As the firing velocity is increased beyond this, elliptic orbits are produced; one is shown in (D). If the initial firing is above the surface of the Earth as shown, there will also be elliptical orbits at slower velocities; these will come closest to the Earth at the point half an orbit beyond, and directly opposite, the firing point.
At a specific velocity called escape velocity, again dependent on the firing height and mass of the planet, an open orbit such as (E) results – a parabolic trajectory. At even faster velocities the object will follow a range of hyperbolic trajectories. In a practical sense, both of these trajectory types mean the object is "breaking free" of the planet's gravity, and "going off into space".
About Orbital decay:
Orbits can be artificially influenced through the use of rocket engines which change the kinetic energy of the body at some point in its path. This is the conversion of chemical or electrical energy to kinetic energy. In this way changes in the orbit shape or orientation can be facilitated.
Orbit - Wikipedia, the free encyclopedia
Abii
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So nothing's been "unveiled" then, eh? Why go through all this if you're gonna show a mock up?
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