Successful ignition of indigenous cryogenic engine

[IND151]

Successful ignition of an indigenous cryogenic engine on Wednesday at Mahendragiri in Tamil Nadu’s Kanyakumari district, in conditions simulating the high altitude atmosphere, has boosted the confidence of the Indian Space Research Organisation (ISRO) to go ahead with the launch of a Geo-synchronous Satellite Launch Vehicle (GSLV-D5) in July.

The hot-test took place in the newly-built high altitude test facility (HAT) at ISRO’s Liquid Propulsion Systems Centre (LPSC) at Mahendragiri.

“The test was held at 7.55 p.m. on Wednesday, simulating the high altitude conditions to see whether ignition of the indigenously developed cryogenic engine takes place smoothly, as per the expected temperature, pressure and flow parameters,” said Director of LPSC M.C. Dathan.

“The ignition was perfect and it gave all the parameters as per our predictions and it has given us an excellent confidence to go ahead with the GSLV-D5 launch from Sriharikota in July,” he noted. The engine, which uses liquid oxygen and liquid hydrogen as propellants and develops a thrust of 7.5 tonnes, powers the GSLV’s upper stage.

With the successful test, the indigenous cryogenic engine would be fully assembled and the cryogenic stage itself delivered at Sriharikota in a month’s time. “Once it reaches Sriharikota, it may take more than two months to fully assemble the vehicle and conduct all tests. So we are planning to launch the GSLV-D5 in the second half of July,” said Mr. Dathan.

GSLV-D5, with the indigenous cryogenic engine, will put into orbit a communication satellite called GSAT-14.

Mr. Dathan said the HAT facility was realised in a record time of one year.“This facility is a unique one in the country for testing cryogenic engines, simulating the high altitude conditions.”

The launch of a GSLV-D3 with an indigenous cryogenic engine in April 2010 ended in failure. Although the engine ignited in vacuum in space, the ignition could not be sustained.

thanks for info

 

[Mirza Jatt]

good news......

 

[acetophenol]

. It requires magnets with extremely powerful magnetic fields. Such devices have been made that were able to levitate at most a small mouse and thus produced a 1 g field to cancel the Earth's; yet it required a magnet and system that weighed thousands of kilograms, was kept superconductive with expensive cryogenics, and required 6 megawatts of power

 

[IND151]

weightlessness is not completely achieved in "Water filled pools" or "neutral buoyancy laboratories".The parts still feel their weight there fore its not "weightlessness" but "lower gravity" which the astronauts use to simulate effects close top weightlessness.

"Diamagnetism" is also used to simulat lower gravity situations.Diamagnetic leviation kjfhewai;h;owjfo'

Zero gravity can be experienced in planes too

Both US and Russian has such programs

http://www.incredible-adventures.com/graphics/chart_vomitcomet2_990316.gif

 

[acetophenol]

Zero gravity can be experienced in planes too

Both US and Russian has such programs

http://www.incredible-adventures.com/graphics/chart_vomitcomet2_990316.gif

yeah bro. They take you up in a plane and then suddenly drop down and your intestine go upside down!!!s

 

[Hack-Hook]

weightlessness is not completely achieved in "Water filled pools" or "neutral buoyancy laboratories".The parts still feel their weight there fore its not "weightlessness" but "lower gravity" which the astronauts use to simulate effects close top weightlessness.

"Diamagnetism" is also used to simulat lower gravity situations.Diamagnetic leviation kjfhewai;h;owjfo'

the only way to achieve lower gravity is to increase the altitude and go farther from the center of earth mass , gravity is the effect of two mass on each other and right now we can't play with it but we can counter a force with another force and for example in Diamagnetic Leviation they counter gravity with magnetic field.
in the laboratories and when a plane dive , you experience weightlessness ,for experiencing true lover gravity you must go to ISS

 

[GR!FF!N]

Zero gravity can be experienced in planes too

Both US and Russian has such programs

http://www.incredible-adventures.com/graphics/chart_vomitcomet2_990316.gif

Russians generally use Il-76 for this..official name of this kind of aircraft is "Reduced Gravity Aircraft"..Nase has "Vomit Comet" program for this kind of experiment..

Reduced gravity aircraft - Wikipedia, the free encyclopedia