From UPSC perspective, the following things are important :
Prelims level : Femto Satellites, Micro-gravity
Mains level : Not Much
An experimental satellite developed by three students of Karur (TN) has been selected for launch in sub-orbital space by NASA.
Try this PYQ:
Q.The term ‘IndARC’, sometimes seen in the news, is the name of:
(a) An indigenously developed radar system inducted into Indian Defence
(b) India’s satellite to provide services to the countries of Indian Ocean Rim
(c) A scientific establishment set up by India in Antarctic region
(d) India’s underwater observatory to scientifically study the Arctic region
- The Indian Sat is made of reinforced graphene polymer. It is 3 cm in size and weighs 64 gm.
- It has its own radio frequency communication to transmit and receive a signal from earth to outer space. The solar cells attached to the satellite generate power for it.
- The photographic film will absorb and measure the cosmic radiation inside the rocket.
- It would study the effect of reinforced graphene polymers in microgravity. It would be in sub-orbital space flight for a few minutes before landing in the ocean.
What is micro-gravity?
- The term micro-g environment is more or less synonymous with the terms weightlessness and zero-g, but with an emphasis on the fact that g-forces are never exactly zero—it is just very small.
- On the ISS, for example, the small g-forces come from tidal effects, gravity from objects other than the Earth, such as astronauts, the spacecraft, and the Sun, and, occasionally, air resistance.
- Femto-satellites are satellites with a mass lower than 100 grams.
- These new categories of satellites are, by concept, low cost devices if they are based on Commercial-of-the-Shelf (COTS) components.
- Some examples of applications are related to low-cost missions with a short time of development.
- Kalamsat was a communication satellite with a life span of two months launched in 2017.
- The nanosatellite is a 10cm cube weighing 1.2 kg.
- It will be the first to use the rocket’s fourth stage as an orbital platform.
- The fourth stage will be moved to higher circular orbit so as to establish an orbital platform for carrying out experiments.
- It is named after former Indian president Dr APJ Abdul Kalam and was built by an Indian high school student team, led by Rifath Sharook, an 18-year-old from the Tamil Nadu town of Pallapatti.
- It is the world’s lightest and first-ever 3D-printed satellite.