AstrotalkUK

Not for profit website/blog on astronomy, space and my writing

Episode 77: Satellite tracking – the early days

By 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?

Podcast: Play in new window | Download (0.0KB) | Embed

Subscribe: Spotify | RSS | More

Book Review: ISRO: A Personal History

By Leave a Comment

Title: ISRO: A Personal History
Publisher: Harper Collins India
Author: R. Aravamudan with Gita Aravamudan

A delightful personal account of India’s space program from the very beginning. With personal memories from an era that otherwise would be lost. This is an important historical record of events that will in a few years be lost entirely in living memory. It is a non-technical account written by an engineer. The co-author Gita Aravamudan’s, experience in journalism is no doubt a key factor in the succinct and easy to read the narrative style.

As expected it is the personal anecdotes that really make this a fascinating reading. The reference to “chase a chimaera” wonderfully captures the extraordinary goal Sarabhai had set for India of 1962. Aravamudan’s personal accounts of meetings and working with Sarabhai, Bhabha and Kalam. While at NASA Wallops, his meeting the engineers from Pakistan captures a unique moment when the two neighbours’ space programs were at a stage of capability.

Visits by the Dalia Lama, J.R.D Tata, confrontation with local fishermen and union disputes paint a richer picture of Thumba than I had not come across before. The first-hand account of travelling to Australia to purchase a fully functioning telemetry station has surprising twists and turns. The public display of a moon rock at Sriharikota caught the imagination of the local population who turned up in unexpectedly large numbers to view it.

During his time as a director at Sriharikota, he describes the administrative burden of managing the town-like scale of the centre. As the director, he was responsible for the operations of a school, hospital, shopping centre, mosque and a temple in addition to managing the space missions. The authors remain apolitical and consistent with similar books by former ISRO employees. Naturally, the author is proud of his contribution and occasionally exaggerating ISRO’s achievement (i.e. ISRO being the first agency withMars Orbiter Mission to succeed with orbiting Mars on the first attempt). I would have liked to have seen more about the exchanges between the Indian and Pakistani engineers when the met at Wallops.

Historians of the future will be indebted to Aravamudan and his wife for chronicling a unique episode in India’s journey as a space power.

 

Public Event. Anglo Indian Stephen Smith – India’s forgotten Rocketeer

By 2 Comments

What: A public talk on Anglo Indian Stephen Smith. His life and achievements.

Where: The Larkhill Centre, Thorley Lane, Timperley, WA15 7AZ (about 3 miles from Manchester International Airport)

When: 19:30 – 20:15 Tuesday 21st March 2017

The event is organised by the India Study Circle for Philately. During the 1920s Stephen Smith founded the Calcutta Philatelic Club and the Aero Philatelic Club of India (which changed its name to the Indian Airmail Society in 1930). The rocket mail covers flown in his rockets were in demand by collectors then and remain so today.  A bit more about him on this piece I wrote here and checkout the update in my comment to the same post.

In the talk I will speak about  his personal life story and provided an update on having recently made contact with his  family (grand-daughter and great grand-daughter) living in London. The event is open to the public and is free – includes tea and biscuits.

 

Episode 71: TATA Institute for Fundamental Research

By Leave a Comment

 

Homi Bhabha 1909 - 1966
Homi Bhabha 1909 – 1966

The Indian Space Program was initiated by a brilliant nuclear physicist Homi Bhabha who pretty much immediately handed over the space program to Vikram Sarabhai. Bhabha himself pursued the goal of establishing premier scientific institutions for fundamental research in India. At the time he regarded scientific institutions to be critical for the new emerging independent India. Whilst working in the Indian Institute of Science, in 1945 he came up with the idea of an institution for fundamental research and went on to establish the Tata Institute for Fundamental Research (TIFR) which continues to operate today.

Opening ceremony in 1954
Opening ceremony in 1954

Although separate organisations, the connection between ISRO and TIFR remains strong to this day. Many of the instruments and subsystem onboard ISRO’s satellites are designed and constructed within TIFR. In this episode, the former director of TIFR, Professor Mustansir Barma talks about Homi Bhabha, his achievements in physics and the role of the TIFR in modern India.

Podcast: Play in new window | Download (0.0KB) | Embed

Subscribe: Spotify | RSS | More