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Episode 89 – Carbon Nanotubes

By Gurbir Dated: October 25, 2019 1 Comment

Gadhadar Reddy

In his 1979 novel, Fountains of Paradise, Arthur C Clarke imagines a cable stretching from the Earth’s equator to Geosynchronous orbit. He called it a “space elevator” and imagined it would be constructed from continuous pseudo-one-dimensional diamond crystals. Bangalore based NoPo Technologies is now commercially producing Carbon Nanotubes. Could this material, one day be used to construct Clarke’s space elevator?

Materials that offer high strength alongside low mass are highly sought after by the aerospace industry. In the past, it was aluminium, titanium and Carbon fibre. The new wave of materials consists of Graphene and Carbon nanotubes. Carbon nanotubes like diamonds, soot and graphene are allotropes of Carbon. Same atomic structure but differ in physical construction.

NoPo Technologies was established in 2011 by the CEO Gadhadar Reddy and is already commercially supply Carbon Nanotubes to Japan and elsewhere.

Some of the themes we discussed include:

  • NoPo Technologies was incorporated in 2011 and is probably the only producer of Carbon Nanotubes in India at the present.
  • Carbon Nanotubes have desirable attributes of high thermal and electrical conductivity, tensile strength, resilience to radiation and are extremely lightweight.
  • Nopo Technologies commercially produce single-walled Carbon Nanotubes of about 8 nm diameter and 2000 nm long.
  • Use cases currently include lightning conductors on aircraft, insulators for cryogenic fuel tanks, black surfaces for star trackers on spacecraft and molecular scale filters that can be used for producing biological membranes or even water filters for desalination plants.
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  • NOPO Offices in Bangalore
  • Electron Microscope
  • Carbon Nanotubes
  • Anto assessing a new batch of Carbon Nanotubes
  • Manufacturing vessel
  • Raman Specrometer

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Episode 88 – India’s Private Space Sector

By Gurbir Dated: October 11, 2019 Leave a Comment

Narayan Prasad

No country has exploited space for social and economic benefits more than India. It has always been a government-run operation, until now.

As in other nations, the private space sector is emerging in India. One name that pops up when discussing private and commercial space in India is Narayanan Prasad. He has been instrumental in forging platforms where all stakeholders from the New Space Community can support each other and share views, opinions and news. The platforms include Whatsapp, Blog, Telegram and a New Space India Podcast.

In this episode, he recalls his journey so far and his part in his own start-up Satsearch.co as its COO. Here are some of the key takeaways from this interview


  • Most private sector players build products designed by ISRO under licence from ISRO. Private Space Sector in India is subject to excessive government bureaucracy preventing engagement from private investigators.
  • An independent regulator is needed. Independent regulator in telecommunication opened up the market for private telephone lines. An independent regulator for the private space sector is essential for this market to flourish.
  • NASA has created the Commercial Lunar Payload Service (CLPS) to engage the private space sector companies. India does not have anything equivalent.
  • This year ISRO established the New Space India Limited (NSIL). It was established to limit the potential impact of the Antrix/Devas case.
  • Policies exist in India for Communication and Remote Sensing but no overall policy for Space – yet. Although a draft Space bill was published in 2017 for comment. That bill drew a distinction between companies that work with ISRO and those outside ISRO.
  • Two of many space startups in India include 
    • Bellatrix Aerospace produces Ion engines for in-orbit spacecraft propulsion. Ion propulsion and reduce the spacecraft weight and extend the operational lifetime by about 60%
    • NoPo technologies are the only producer of Carbon Nanotubes in India. Like Graphene, Carbon Nanotube is an allotrope of Carbon. The unique properties include high tensile strength, electric and thermal conductivities.
  • Satsearch.co – now 3.5 years old based in the Netherlands and managed by a distributed team based in Germany, Netherlands, Italy and England.  Had it been based in India – it may have been subject to restrictions e.g queries coming in from Suparco in Pakistan.
  • As with any new emerging industry – most of the current space startups will cease to exist within 5-7 years from now.
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Space Museum at BM Birla Science Centre. Hyderabad

By Gurbir Dated: October 9, 2019 Leave a Comment

Pranav Sharma
Museum Curator

On 26 July 2019, India’s first public space museum opened its doors in Hyderabad. With support from ISRO, the 9000 sq ft is now devoted to pictures, models and stories about India’s space programme.

Billed as India’s first space museum but that title really goes to the VSSC Space Museum housed in St Mary Magdalene Church, in Thumba. It was the headquarters of was then known as INCOSPAR and became ISRO in 1969. This Church museum is located inside the sprawling Vikram Sarabhai Space Centre, an operational ISRO site, so access to it is restricted and must be booked in advance.

The initial 24 exhibits in this new space museum include scale models of Indian Launch vehicles GSLV Mark III, GSLV Mark II and PSLV, Chandrayaan-1, Mars Orbiter spacecraft, APPLE, Aryabhata, Bhaskara, Rohini RS-1 and a model of the International Space Station.  

The exhibits were collected over two years by the curator, Pranav Sharma.  Sharma who is an engineer, a scientist, a TedX speaker and a science communicator has put together an attractive set of exhibits to inform, educate and entertain visitors of all ages about India’s space programme. This rich eclectic collection of exhibits includes lines from William Shakespeare, Dillon Thomas and even lyrics from a Coldplay track.

The new Space Museum inside the Birla Science Centre is open to the public and is first of a series that will be set up around India in the coming years. The museum doe not really have a website, other than this and the Birla Science Centre website does not give any prominence to this new resource. Despite the numerous compelling exhibits, the space museum lacks tactile and interactive exhibits that especially children are so fond of handling and engaging with.

Sharma offers a taste of the experience in this 40-minute youtube video, an online tour of the museum and invites visitors to come and visit in person.

A 40 minute Youtube video tour of the museum

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New Book: Stephen H Smith: India’s Forgotten Rocket Pioneer

By Gurbir Dated: August 30, 2019 5 Comments

A new book provides a detailed account of the life and work of Stephen H Smith.

Now available. For discount codes and purchase options look here.

During 1934 and 1944 in Calcutta, he worked alone and unsupported on developing rocket transport. In 1935, he was the first to demonstrate the successful transport by a rocket of livestock, food and medicine.

The book charts the story of Stephen H Smith, described by a contemporary as “the greatest one-man campaign for rocketry”. He dedicated his life working alone in northeast India to develop a new revolutionary means of transport using rocket power.

The development of rockets in India is commonly understood to have ended with Tipu Sultan in 1799 and started again in 1963 with what is now called the Indian Space Research Organisation. However, in the intervening period, rockets were built, and championed by one man, working alone in Calcutta. In 1925 he set up the Indian Air Mail Society and it is amongst the philatelic community globally where his work is still known but is almost entirely forgotten from the popular imagination in India.

On 14 February 1891, Stephen H Smith, the only son of a tea plantation manager originally from Norfolk, England was born in the Strawberry Hill region of Shillong. Between 1934 and 1944, he conducted over 200 rocket experiments to demonstrate the utility of a rocket as a means of transport.

The 20th century was the harbinger for new revolutionary means of transport. Trains, airships, aeroplanes and automobiles were the key technologies fueling the developed nations. Mesmerised by aeroplanes as a child he engaged head-on with the new and transformative technology of rockets as an adult. In September 1934, he conducted his first rocket experiment to transport mail from a ship on the Hooghly River to the Sagar Island. In the decade that followed he conducted over 200 experiments. He built multi-staged rockets, and boomerang rockets and tested compressed air and gas as propellants. Like many early rocket mail experimenters, he supported his experiments financially by flying specially designed souvenir covers on his rockets. These flown items carrying his recognisable signature are spread around the world and even today can fetch up to $20,000 each.

Small self-funded groups to develop rockets were established in USSR, USA, Britain, Australia and Germany. It was from these groups that Sergei Korolev and Wernher von Braun emerged and competed in the epic space race that resulted in Sputnik, Gagarin and Apollo 11. Stephen H Smith was their contemporary but worked alone and unsupported in India. This book reveals the challenges faced by one man working alone at the forefront of new ground-breaking technology.

Long after he had died, he was inducted into the Hall of Fame by the American Airmail Society in 1989. In 1992, a year after the centenary of his birth, the Indian government celebrated his achievements by issuing a stamp and a first-day cover dedicated to his work. Today his work is found in official NASA publications, the Journal of the British Interplanetary Society and in the National Air and Space Museum in Washington DC.

Smith’s work inspired a science fiction story during his lifetime. Human achievements in space – the Apollo programme, the International Space Station and India’s accomplishments including Mars Orbiter Mission at Mars and Chadrayaan on the Moon owe more than just inspiration to those early rocket pioneers during the early 1930s around the world including Stephen Smith in India.

A new study of his contacts with the King of Sikkim, with King George V, with a member of parliament in London and a 25 year-long correspondence with a Swiss philatelist reveal in his own words his struggle to attain recognition and support for his work. His reluctant attempt to work with the military authorities in India during World War II ended in frustration. His multiple attempts in 1949 to contact the Governor of Bengal and Prime Minister Nehru in the newly independent India failed to generate a response.

Stephen Smith lived and worked through some of the darkest periods of the 20th century, the Great Depression, World War Two, the Bengal Famine and the post-Indian Independence riots in Calcutta. In December 1950 his mentor and friend in Switzerland Dr Robert Paganini died leaving him, someone he had never spoken with or ever met, a part of his will. Sadly, Stephen Smith himself died two months later.

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