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Episode 80 – S Somnath Director of Vikram Sarabhai Space Centre

By Gurbir Dated: November 30, 2018 Leave a Comment

S Somnath. Director of Vikram Sarabhai Space Centre. Credit. Author

S. Somnath joined the Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram in Kerala in 1985 and today he is its director. With more than three decades at ISRO he has held several key posts including director of the Liquid Propulsion Systems Centre. This episode is available in audio and video below.

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This interview was recorded on 5th October 2018 in Bremen germany during the IAC2018., so is a little noisy in parts.

  • ISRO delegation at IAC2018. Credit IAC2018
  • Vikram Sarabhai Space Centre Credit ISRO
  • ISRO Stand at IAC 2018. Credit Author

Some highlights include

  • Satish Dhawan – Brought a new vision and restructured ISRO at the organisation level. He consolidated and integrated specialist centres throughout India to the national organisational structure that exists today.
  • Only solid propellants are manufactured on site at Sriharikota. Liquid and cryogenic propellants are transported over a journey of a day and a half from ISRO’s Liquid Propulsion Centre to Sriharikota. Currently, only roads are used but sea transport may be an option in the future.
  • The heavy lift GSLV Mk3  second development flight is scheduled to launch before the end of 2018.  A target of three successful development flights is required before GSLV Mk3 is designated as operational.
  • Currently, Sriharikota launch capacity of 12 to 18 launches per year, is determined by the capacity of industry to manufacture launch vehicles. The private sector has all the technological competencies but lacks the capacity. 
  • An additional launch site would not be of value at this time. Once the private sector capacity increases – within the next 2 to 3 years, then additional launch sites would be of use.
  • VSSC played a key role in developing the technologies required for the Human Space Flight programme. The  Pad Abort Test was successful. The parachute detached at the planned time and not prematurely as it looks in the video.
S Somnath. Director of Vikram Sarabhai Space Centre

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Episode 79: satsearch.co – A single digital marketplace for the global space supply chain?

By Gurbir Dated: November 16, 2018 Leave a Comment

Satsearch co-founders  – Kartik Kumar, Alberto Vaccarella and Narayan Prasad

A space startup based in The Netherlands – www.satsearch.co is attempting to establish a single digital global marketplace for space components, products and services.  Ultimately, Satsearch’s goal is to reduce cost and time by helping customers for and suppliers of space components, products and services find each other online.  This episode available in audio and video below.

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The Satsearch website/portal is hosted on a cloud-based environment (Amazon Web Services) and is only available in English but other languages are in the pipeline. Currently, the service to both suppliers and customers is free of charge. How it will make money in the future is not yet year clear but the current focus is on growth. The founders hope to develop Satsearch into a  sort of “yellow pages” for space products and services but with a richer vendor-neutral metadata interface supported by modern AI tools and applications.

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Episode 78: ISRO’s early Earth Observation Cameras with former chairman Mr Kiran Kumar

By Gurbir Dated: September 28, 2018 Leave a Comment

Dr Kiran Kumar. Credit ISRO

Mr Kiran Kumar studied physics, physical engineering and electronics in educational institutions in India including the Indian Institute of Science (IISc) in Bangalore. He specialised in electro-optical imaging systems and in 1975 was recruited by Dr Yash Pal (one of a few key individuals who played a pivotal role in the early days of India’s space programme) to ISRO’s Space Application Centre in Ahmedabad.

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During the 1970’s, state of the art imaging sensor consisted of photodiodes, vidicon tubes and photomultipliers. It was these analogue devices that he started working with before moving on to modern solid state devices such as  Charged Couple Devices (CCDs). He contributed to imaging systems in India’s first remote sensing satellite (Bhaskara-1) and deep space missions to the Moon (Chandrayaan-1) and Mars (Mars Orbiter Mission).

During the 1970’s, state of the art imaging sensor consisted of photodiodes, vidicon tubes and photomultipliers. It was these analogue devices that he started working with before moving on to modern solid state devices such as  Charged Couple Devices (CCDs). He contributed to imaging systems in India’s first remote sensing satellite (Bhaskara-1) and deep space missions to the Moon (Chandrayaan-1) and Mars (Mars Orbiter Mission).

A few highlights from the interview recorded on 22 September 2018

  • Had considered medicine as a career but a combination of not meeting the age criteria by 22 days and National College in Bangalore initiating a new Physics Honours course in 1968, he chose Physics.
  • Strongly influenced by physicist and ardent rationalist  Dr.H.Narasimhaiah who later became the vice-chancellor of Bangalore University
  • Has a clear memory of Gagarin’s spaceflight in 1961 and Apollo 11 landing on the Moon in 1969.
  • Graduated in 1971, the same year that Vikram Sarabhai died. He never saw or met him.
  • In 1975, he was working on his Mtec at the IISc when India’s first satellite, Aryabhata was launched. He worked on Bhaskara – initially known as Satellite for Earth Observation
  • In the mid-1970s only four metropolitan areas in India had television reception. The SITE programme illustrated the benefits of satellite communication in delivering education to small rural communities across India.
  • During 1995-1999 – ISRO had the highest spatial resolution imaging capability from space in the civilian domain.
  • Using Commercial Off the Shelf products (or parts from COTS product) is not unusual for experimental space missions.
  • Moving into the Chairman’s role was not onerous. Previous experience as director of an ISRO centre provided the required experience.

Although Kiran Kumar stood down from the chairman’s role in January 2018, he remains active within ISRO.

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Episode 77: Satellite tracking – the early days

By Gurbir Dated: July 13, 2018 Leave a Comment

Sven Grahn has been working in the space field in one way or another for over fifty years. Officially retired, he continues to work as a project leader of a student satellite at the Royal Institute of Technology in Stockholm.

He is perhaps best known for his work in tracking satellites launched by the secretive Soviet Union during the 1960s and 1970s.In those pre-internet days, his work along with others helped to identify individual mission characteristics such as mission types, members of the crew, take off and landing times. He recorded over 1000 conversations from orbiting spacecraft as they flew over Sweden.

In this interview, he speaks about

  • The impact of the space race on his choice of career
  • His work on sounding rockets and meteorology in Sweden and beyond
  • Satellite tracking. What he tracked, heard and recorded using radio and tape recorders.
  • How he came to research and write about the  satellite tracking conducted at Jodrell  Bank radio telescope in England

As an 11-year-old, Sven had seen Sputnik in the sky over Sweden with his own eyes. I started by asking him how the onset of the space race had impacted his choice of career?

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