Showing posts with label techology. Show all posts
Showing posts with label techology. Show all posts
Tuesday, August 11, 2009

40 Indian Students About To Create 'Pico satellite'

40 students from seven engineering colleges in Bangalore and Hyderabad are part of a team guided by ISRO to create a 'Pico satellite'.

These engineering students are in no hurry to have fun after classes. They linger in the labs
instead of accepting campus placements.They are on a mission possible: they are busy building the smallest satellite for their country at the Nitte Meenakshi Institute of Technology, Bangalore.

Forty students from seven engineering colleges in Bangalore and Hyderabad are part of a team guided by ISRO to create a 'Pico satellite'. The satellite, which resembles a small cube, weighs only 850 gm and has a volume of 1.1 litres. It contains an imaging camera with a 90m resolution and will perform the function of a remote-sensing satellite.

"The challenge is to bring all the features of an ordinary satellite in this miniature form," says
Chetan Angadi, one of the team members. The satellite will be launched in December through PSLV to a 700-km orbit.

The students have prepared a ground station. An antenna has been placed on the terrace to detect the position of the satellite. They will control the satellite from this ground station. All the
chores - from designing to welding and compiling of structures - are done by the students themselves.

The group is a heterogeneous one with students from NITTE, RVCE, BMSIT, MSRIT in Bangalore and IARE, CBIT and VITS in Hyderabad. While the Bangalore students have made Nitte their base, their Hyderabad mates work from their respective college labs.

The students divided themselves into different "sub systems" and carry out the various functions independently. "We did not know anything about it when we began. We learn one step at a time and implement it. That is how we progressed," says Raghavendra S, a core group member.



They are regularly guided by scientists from ISRO. "We try out different options and approach the ISRO. They decide on which option to follow," he says. The work has proved to be a herculean task.

They have been working for the past one-and-a-half years on this project.

The idea was conceived by a group of IV semester students from Bangalore who was inspired by a talk at the International Astronautical Federation in December 2007.



source: timesofindia.indiatimes.com
Wednesday, July 15, 2009

Recollecting Down 40th Moon Landing Anniversary

As the 40th anniversary of the moon landing approaches, we look at key events in the history of
space exploration...!
3 November 1957: The dog Laika, the first living creature ever to orbit the earth, is launched aboard Sputnik II. Laika dies a few hours after launch, although this is kept secret until 2002.
Instead, the Soviets claim she lived for several days

31 January 1958: The United States launches its own statellite, Explorer I. It remains in orbit
for 12 years, though it stops transmitting data in May 1958. In this photo, Dr Eberhard Rees, Major General John B Medaris, German-born rocket scientist Wernher von Braun, Dr Ernst Stuhlinger, Willi Mrazek and Dr Walter Haeussermann display a full-scale model of Explorer I

12 April 1961: Major Yuri Gagarin, a Soviet cosmonaut, becomes first human in outer space and thefirst to orbit the Earth. His craft, Vostok I, circles the Earth at 27,400 kilometres per hour in a flight lasting 108 minutes

5 May 1961: Alan Shepard becomes the first American in space, on a suborbital flight lasting just
15 minutes and 28 seconds. Twenty days after this achievement, President John F Kennedy pledges that America will send a man to moon before the end of the decade

....all three crew members - Virgil Grissom, Edward White and Roger Chaffee - are killed. The
tragedy leads to a complete redesign of NASA's command modules, and it is nearly 21 months beforethe launch and completion of the next manned mission, Apollo 7

9 November 1967: The Saturn V rocket, which will go on to propel future Apollo spacecraft into
space, has its first test flight

24 December 1968: Astronaut William Anders takes a photograph of the Earth behind the moon' s horizon, during the Apollo 8 mission, the first manned voyage to orbit the moon

16 July 1967: Apollo 11 is launched...

....While Armstrong and Aldrin take part in Extravehicular Activities on the moon's surface, fellow astronaut Michael Collins orbits above

11 April 1970: Apollo 13, carrying James A. Lovell, John L "Jack" Swigert and Fred W Haise, is
launched on a planned trip to the moon. Two days into the mission, a fault in the electrical system produces an explosion in an oxygen tank, leading to a loss of electrical power and failure of both oxygen tanks...

....The crew manages to use the lunar module as a "lifeboat" and they splash back down to Earth
safely

2 March 1972: An unmanned probe, Pioneer 10, is launched. It becomes the first spacecraft to travel through the asteroid belt, and the first to make direct observations of Jupiter, which it
passes in December 1973. By most definitions it is also the first craft to leave the solar system.
It sends its last communication back to Earth on January 22 2003, while 7.6 billion miles from
Earth

14 May 1973: Skylab, America's first experimental space station, is launched. It is abandoned in
February 1974, and remains in Earth's orbit until July 1979, when it crashes into Western
Australia. However, the Soviet Union launched the first space station, the Salyut I, on 19 April
1971

15 July 1975: an American Apollo spacecraft docks with a Soviet Soyuz spacecraft. In a symbolic
gesture, the two mission commanders, Tom Stafford and Alexey Leonov, exchange the first
international handshake in space. After 44 hours together, the two ships separate. This was the
final flight of an Apollo spacecraft and the last manned space mission until...

18 June 1983: Sally Ride becomes the first American woman in space, 20 years after the first
Russian woman in space, Valentina Tereshkova

28 January 1983: The first major catastrophe for NASA, as space shuttle Challenger explodes 73
seconds after take-off...

....all seven crew-members are killed, including a civilian, teacher Sharon Christa McAuliffe

24 April 1990: The Hubble Space Telesecope is launched. Soon after it is launched, scientists
discover that the telescope's mirror has been ground incorrectly. The flaw is corrected on a shuttle mission in December 1993, with a further servicing mission in May 2009

4 July 1997: Pathfinder, an unmanned mission launched on 4 December 1996, lands on Mars. Its
rover, named Sojourner, goes on to explore the surface of the planet for 80 days

20 November 1998: The first piece of the International Space Station is launched. It is scheduled to be complete by 2011

2 November 2000: The International Space Station receives its first resident crew: astronaut
Bill Shepherd and cosmonauts Yuri Gidzenko and Sergei Krikalev. They spend four months on board.The space station has been constantly staffed ever since, providing a permanent human presence in space

28 April 2001: Dennis Tito, an American multimillionaire, becomes the first space tourist, spending 7 days, 22 hours, 4 minutes in space and orbiting Earth 128 times


1 February 2003: Space Shuttle Columbia disintegrates upon re-entering the Earth's atmosphere after 16 days in space. All seven crew-members are killed


Under a cloud-washed sky, spectators watch as space shuttle Endeavour rises majestically from
Launch Pad 39A at NASA's Kennedy Space Center in Florida on the STS-127 mission to the
International Space Station. Liftoff was at 6:03 p.m. EDT on July 15, 2009, and was the sixth
launch attempt for the mission. The launch was scrubbed on June 13 and June 17 when a hydrogen gas leak occurred during tanking due to a misaligned ground umbilical carrier plate. The mission was postponed July 11, 12 and 13 due to weather conditions near the Shuttle Landing Facility at Kennedy that violated rules for launching, and lightning issues.

Endeavour will deliver the Japanese Experiment Module's Exposed Facility and the Experiment
Logistics Module-Exposed Section in the final of three flights dedicated to the assembly of the
Japan Aerospace Exploration Agency's Kibo laboratory complex on the station.
Thursday, June 18, 2009

NASA To Bomb The Moon !!

Scientists expect the impact to blast out a huge cloud of dust, gas and vaporized water ice at least 6 miles high.

The aim is to see whether any traces of water will be revealed by the disruption caused to the planet's surface. Nasa will analyse the space cloud caused by the explosion for any sign of water or vapour.
Scientists expect the impact to blast out a huge cloud of dust, gas and vaporized water ice at least 6 miles high - making it visible from Earth.

If the search is successful it could provide vital supplies for a moonbase. The moon is mostly dry desert but ice may be trapped in craters which never see sunlight.
The unmanned Lunar Crater Observation and Sensing Satellite mission (LCROSS) will fire a Centaur rocket into the surface at twice the speed of a bullet.
An accompanying spacecraft will orbit the moon for a year looking for possible landing sites for astronauts. The Lunar Reconnaissance Orbiter will spend at least a year creating the most minutely detailed map of the moon's surface ever seen.
The vessel swill be the first American spacecrafts to make a lunar trip since 1999.
Astronomers have long thought that a rain of comets brought water to the arid, lifeless moon over billions of years.

In the past few years, at least two American spacecraft reported the presence of water by detecting hints of hydrogen and oxygen - the constituents of water - frozen deep in the darkest recesses of craters around both the north and south lunar poles.


Visit 13above To Know More About Science

Popular Posts