Before launching the satellite & space shuttle it is the most important test. I am writing the article for the sake of budding youngsters. Without doing the vibration if satellites are launched all the components or parts will break up & comeout of the capsule. The world runs on mechanical vibrations. Even a quartz clock runs on vibrations when an electric current pass through the piezo electric crystal, crystal vibrates. This is the principle of quartz clock. Vibration is strong phenomenon on earth. When PSLV lifts off the spacecraft or satellite carried by PSLV experiences 15g condition (‘g’stands for acceleration due to gravity). The condition of accelertion due to gravity is tested by accelerometer. 120 accelerometer are placed near the instrument of space shuttle & satellite so that each part could be tested. If a part or component gets cracked by the vibration while testing they will replace the part & component.
March 4, 2009
Chandrayan Of India
Although Moon was explored in the 1969 by the Americans it is very much less we learnt about the Moon. Moon is a very mysterious place for scientists. It is Indians turn to explore the moon. Indians are launching polar satellite launch vehicle into the orbit. Polar orbit is 800 to 1500 kms from the earth. Indians are launching unmanned mission into the PSLV orbit. launching depends on the exact positioning of the earth sun & the moon. Indians wants to explore the poles of the moon. Polar region of the moon is a mysterious place of atmosphere. Helium gas & gravitational forces need to be studied properly. The space craft is tested on space simulator.
1) Vibration test – before launching the space craft to the moon vibration test carried out on spacecraft. Space shuttle should with stand the 16 tonnes of vibration.
2) Space shuttle should tolerate a noise similar to noise produced by 10 jet engines.
3) Temperature test – It should withstand the temperature of 100′c
Space shuttle should map systematically topography of the moon and chemical 7 micrological mapping of moon to understand the process of formulation & chemical evolution of moon.
