Stellenbosch University
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Address | Stellenbosch Central, Stellenbosch, South Africa |
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Chancellor | Edwin Cameron |
Phone | +27 21 808 9111 |
Vice Chancellors | Wim de Villiers |
Date of Reg. | |
Date of Upd. | |
ID | 2073449 |
About Stellenbosch University
Stellenbosch University is a public research university situated in Stellenbosch, a town in the Western Cape province of South Africa.
Covid: First data points to Omicron re-infection risk
... The study, which has not been formally reviewed by other scientists, Prof Juliet Pulliam, from Stellenbosch University and one of the researchers, said: " These findings suggest that Omicron s selection advantage is at least partially driven by an increased ability to infect previously infected individuals...
The African tech firm hoping to power space missions
... Hypernova is also collaborating with other players in the South African space industry, such as the Electrical and Electronic Engineering department at Stellenbosch University, which is currently developing a technology that would allow satellites to dock with each other...
Meghan calls for gender equality in SA universities
... The duchess announced three new gender grants for the University of Johannesburg, Stellenbosch University and the University of Western Cape at the beginning of Tuesday s discussion with the Association of Commonwealth Universities (ACU)...
Afrikaans scrapped at South Africa's University of Pretoria
... English was given the same status of Afrikaans at Stellenbosch University the following student campaigns even Though the amendments entered into force at the beginning of the year, the University says that the decision for the switch to English was made, again in 2016, prompted by high-profile student campaigns across the country, such as #Afrikaans must fall and #FeesMustFall...
The African tech firm hoping to power space missions
" Most satellites are simply computers that are tossed out the side of a rocket [that] are tumbling in Space , " says Jonathan Lun.
Mr Lun and his Cape Town-based company, Hypernova Space Technologies, are keen to give these tumbling satellites a little bit more autonomy.
The Firm has developed a thruster system that could give even the smallest types of satellites the capacity to move around.
The Company is hopeful that their technology could be applied to nanosatellites which are small satellites weighing under 10kg and, even applied to the tiniest of them all, the 10cm cubes.
There are an estimated 3,200 nanosatellites floating around In Orbit already, and that number is expected to grow rapidly in the near future: SpaceX alone is a constellation of around 42,000 satellites.
But experts are concerned that this explosion in numbers may lead to problems.
Without manoeuvrability - the capacity to change direction - nanosatellites risk colliding with each other, causing Space Debris which might cause problems for other missions.
Mobility would also make it much easier to retrieve, or dispose of, satellites once their working life was over.
But as nanosatellites are deliberately designed to be small and cheap, any new thruster technology needs to be simple to be commercially viable.
Around a decade ago, Mr Lun came across an interesting thruster technology that had previously been researched by Nasa but never fully pursued. He found that an electric reaction could be used to vaporise solid metal fuel, a process which then created a jet of fast-moving plasma that could propel a satellite along.
One big advantage to using solid fuels in this way would be that The Material would be stable enough to add to a thruster-system prior to Launch - removing The Need for any last-minute fuelling before sending satellites off Into Space .
" They don't have to worry about filling it up, they don't have to worry about [The Material ] being toxic, they don't have to worry about it during Launch , something breaking and leaking, " adds Stephen Tillemans, The Head of engineering at Hypernova.
Mr Tillemans confirms The Company has successfully run several environmental tests, such as, running the thruster in a vacuum, in extreme temperatures, and with high vibration. Hypernova's First Mission in Space will be in early 2022 with EnduroSat, a company based in Bulgaria.
Together, the companies are aiming to assess The Performance of the thruster technology in Space , including measuring its force and demonstrating that it can successfully change the orbit of a satellite.
Hypernova are not alone in their research, other organisations are also investing in developing the thruster technology that could propel small satellites through Space , and the European Space Agency and its.
Hypernova is also collaborating with other players in The South African Space industry, such as the Electrical and Electronic Engineering department at Stellenbosch University , which is currently developing a technology that would allow satellites to dock with each other.
Looking much further in to The Future , Mr Lun is confident that it would be possible to scale-up Hypernova's thruster technology so it could potentially be used for much bigger satellites and more ambitious missions.
He is even hopeful that using metal as a fuel will facilitate bigger opportunities for the industry as a whole because thrusters could potentially be powered using substances found in Space - both substances mined in-situ, or collected from Space Debris , for instance.
" So, if we can now switch over from rare expensive liquids and gases as fuel sources, to move stuff around in Space with cheap and abandoned Iron Ore or other metals, it changes The Game completely. "
Source of news: bbc.com