Engineering:AzaadiSAT

Short description: Indian earth observation satellite

AzaadiSAT

Mission type	Earth observation
Operator	ISRO
Website	https://www.isro.gov.in/
Mission duration	55 minutes
Orbits completed	<1
Spacecraft properties
Spacecraft	CubeSat
Manufacturer	Space Kidz India
Launch mass	8 kg
Start of mission
Launch date	03:48 UTC, 7 August 2022
Rocket	Small Satellite Launch Vehicle
Launch site	Satish Dhawan Space Centre, First launch Pad (FLP)
Contractor	ISRO
End of mission
Decay date	7 August 2022 04:43 UTC
Orbital parameters
Regime	Low Earth (intended) Transatmospheric (achieved)
Periapsis altitude	76 km (47 mi)
Apoapsis altitude	356 (221 mi)
Inclination	37.2

AzaadiSAT was an India Earth observation 8U Cubesat weighing around 8 kg developed by the Space Kidz India as a test payload on the maiden launch of the Small Satellite Launch Vehicle (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 payloads 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 working in ham radio frequency to enable voice and data transmission for amateur radio operators, a solid state PIN diode-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 Small Satellite Launch Vehicle's maiden flight SSLV-D1 at 03:48 UTC / 09:18 IST 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 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.