Satellites are able to orbit around the planet because they are locked into speeds that are fast enough to defeat the downward pull of gravity. … Satellites do carry their own fuel supply, but unlike how a car uses gas, it is not needed to
maintain speed
for orbit.
Why do satellites not need fuel?
Satellite needs no fuel to move around a planet in a fixed orbit because
the gravitational force of attraction between the satellite and the planet provides the necessary centripetal force required to revolve around it
. … The distance between moon and Earth is less as compared to the distance between Sun and Earth.
Do satellites need fuel?
Satellites tend
to use nuclear reactors or solar energy
, instead of fuel, to power themselves. Out in space, the sun is an excellent and plentiful source of energy. This is why spacecraft like the International Space Station and the Hubble Space Telescope run on solar power.
Why does a satellite not need any fuel to circle around the earth is it possible to put an artificial satellite in orbit such that it always remains visible directly over New Delhi?
Answer:
The centripetal force necessary for orbital motion of the satellite is provided by the force of gravitation exerted by the earth
on the satellite. So the satellite does not need any fuel for its orbital motion.
Do you need fuel to orbit?
Why do rockets need so much fuel if, in space, there is nothing to slow them down once they are up to speed? Robert Frost:
The propellant is primarily needed to get the spacecraft into orbit
, not to stay in orbit. … When about half the propellant is burned, the bottom half of the rocket is jettisoned.
How does a satellite get power?
The Sun is the main energy source for
satellites, which is why all satellites have solar panel arrays mounted on them. Each array contains thousands of small solar cells which are made of silicon – a material that allows sunlight to be turned into electrical current.
Which fuel is used in rocket?
Hydrogen —
a light and extremely powerful rocket propellant — has the lowest molecular weight of any known substance and burns with extreme intensity (5,500°F).
How many dead satellites are in space?
There are
more than 3,000 dead satellites
and rocket stages currently floating in space, and up to 900,000 pieces of space junk ranging from 1 to 10 centimetres in size — all large enough to be a collision hazard and a potential cause for disruption to live missions.
How many Starlink satellites are in orbit right now?
There are currently
over 1,600 Starlink satellites
in orbit, and that number will continue to grow; SpaceX has filed paperwork for up to 42,000 satellites for the constellation.
How many satellites are in orbit right now?
There are nearly
6,542 satellites
orbiting the Earth as of January 1, 2021. Out of which 3,372 satellites are active, and 3,170 satellites are inactive.
Is it possible to put a satellite into orbit?
All satellites today get into orbit by riding on a rocket
. Many used to hitch a ride in the cargo bay of the space shuttle. Several countries and businesses have rocket launch capabilities, and satellites as large as several tons make it into orbit regularly and safely.
Is it possible to put an artificial satellite into orbit in such a way that it will always remain directly over Kathmandu?
Answer: It is possible to place an artificial satellite in an orbit, such that it is
always visible over
New Delhi. Explanation: A satellite remains always visible only if it revolves in the equatorial plane with a period of revolution equal to that of the earth.
Is it possible to put an artificial satellite into an orbit in such a way that it will always remain directly over New Delhi?
They rotate in the same direction as the earth and one revolution of such satellites is the same as one day on earth (roughly 24 hours). … Since, New Delhi is not in the equatorial plane, hence
it will not be possible to put a geostationary satellite
over New Delhi.
How much fuel do you need in space?
Each solid rocket booster held
1.1 million pounds
of fuel. The external tank held 143,000 gallons of liquid oxygen (1,359,000 pounds) and 383,000 gallons of liquid hydrogen (226,000 pounds). The fuel weighed almost 20 times more than the Shuttle.
How much fuel does a rocket burn at takeoff?
At liftoff, the two Solid Rocket Boosters consume
11,000 pounds of fuel per second
. That’s two million times the rate at which fuel is burned by the average family car. The twin Solid Rocket Boosters generate a combined thrust of 5.3 million pounds.
What happens when the first stage runs out of fuel?
In the typical case, the first-stage and booster engines fire to propel the entire rocket upwards. When the boosters run out of fuel, they are detached from the rest of the rocket (usually with some kind of small explosive charge or explosive bolts) and fall away. The first stage
then burns to completion and falls off
.
