AzaadiSAT was an

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Earth observation 8U

Cubesat A CubeSat is a class of small satellite with a form factor of cubes. CubeSats have a mass of no more than per unit,, url=https://static1.squarespace.com/static/5418c831e4b0fa4ecac1bacd/t/5f24997b6deea10cc52bb016/1596234122437/CDS+REV14+2020-07-3 ...

weighing around 8 kg developed by the Space Kidz India as a test payload on the maiden launch of the

Small Satellite Launch Vehicle The Small Satellite Launch Vehicle (SSLV) is a small-lift launch vehicle developed by the Indian Space Research Organisation (ISRO) to deliver payload to low Earth orbit () or payload to Sun-synchronous orbit (). The rocket supports multi-or ...

(SSLV). It was hitching a ride with EOS-02, the primary satellite of the mission. The launch on 7 August 2022 was a failure in the rocket leading to imminent return to atmosphere for the rocket and the satellites (AzaadiSAT and EOS-02) it carried, destroying them all. Its successor AzaadiSAT-2 was launched onboard SSLV-D2.

Development

It was created to mark India’s 75th year of independence. This anniversary was being marked in 2022 by the Azadi Ka Amrit Mahotsav celebrations throughout the country, and the CubeSat was part of this campaign. AzaadiSAT was built by schoolgirls from 75 schools across India. 10 girls from each school were involved, for a total of 750 students involved. The mission was created to give girls from lower-income backgrounds the opportunity to learn the fundamentals of spaceflight, as part of the United Nations theme of “women in space.” It gave a feeling of pride and importance to women when the satellite was launched

Characteristics

It carried 75 different

payload Payload is the object or the entity that is being carried by an aircraft or launch vehicle. Sometimes payload also refers to the carrying capacity of an aircraft or launch vehicle, usually measured in terms of weight. Depending on the nature of t ...

s each weighing around 50 grams and conducting femto-experiments. Girl students from rural regions across the country were provided guidance to build these payloads. The payloads were integrated by the student team of "Space Kidz India". The payloads included a UHF-VHF

transponder In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a flight trans ...

working in

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frequency to enable voice and data transmission for amateur radio operators, a solid state

PIN diode A PIN diode is a diode with a wide, undoped intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region. The p-type and n-type regions are typically heavily doping (semiconductor), doped because they are used ...

-based radiation counter to measure the ionising radiation in its orbit, a long-range transponder and a selfie camera to take pictures of its solar panels and the Earth. The ground system developed by ‘Space Kidz India’ was to be utilised for receiving the data from this satellite.

Launch

AzaadiSAT was launched on

's maiden flight SSLV-D1 at 03:48

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/ 09:18

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on 7 August 2022, but failed to reach the intended orbit. Due to the final VTM stage failure, the stage as well as the two satellite payloads were injected into an unstable elliptical orbit measuring 356km x 76km and subsequently destroyed upon reentry.

AzaadiSAT-2

AzaadiSAT-2, the official successor of AzaadiSAT, was placed in a 450km circular orbit. It was launched onboard SSLV-D2. It features a modular

satellite bus A satellite bus (or spacecraft bus) is the main body and structural component of a satellite or spacecraft, in which the payload and all scientific instruments are held. Bus-derived satellites are less customized than specially-produced satelli ...

expansion system capable of transforming from 8U to 64U once in orbit. Other payloads remains unchanged from the original AzaadiSAT.AzaadiSAT-2 aims to measure various health data like temperature and reset count from 75 student experiments installed inside the satellite.

References

{{Orbital launches in 2022 Earth observation satellites of India Spacecraft launched by India in 2022 Small satellites