Posts Tagged ‘Sanger’

Video on Proposed Swiss Space Shuttle

October 13, 2019

This is an interesting little video from Swissinfo on YouTube about Swiss Space Systems, a company set up by engineer Pascal Jaussi, which is developing another space shuttle concept. Jaussi was inspired to become a space scientist as a child after he was given a copy of the Tintin book, Tintin on the Moon. His company’s design for the shuttle will have it taken up to 10,000 metres by a passenger jet acting as the shuttle’s first stage. The shuttle will then leave the jet, flying up to a higher altitude, where it will launch a satellite, which will then ascend to its final orbit using its own rockets. The shuttle is initially intended to be a satellite launcher, but later missions will be crewed.

Jaussi’s company does not intend to develop any new technology, but is simply trying to use and integrate already existing technology from America, France and Russia. This is aided by Switzerland’s neutral status. The American’s would understandably be extremely reluctant to give sensitive technology to the Russian the firm, which is building the engines for Jaussi’s shuttle. They’re the same as those in the Russian Soyuz rocket. The French aerospace firm Dassault is responsible for constructing the shuttle’s airframe. The company’s based in Jaussi’s home town of Payerne, in Vaud canton. He would like to build the launch complex there with another, launch complex without an accompanying crew planned for Croatia. The video also shows the shuttle’s cameras being tested in Canada. The video was posted four years ago in 2014, and states that the first test flights were planned for 2018.

This is another version of the Jet/shuttle combination initially proposed by Sanger in Germany. I’ve already blogged about British shuttle proposals using the same idea, Spacebus and Spacecab, by David Ashcroft and Patrick Collins.  The Swiss design is interesting, but 2018 was last year and the fact that we haven’t heard anything more of this fascinating project suggests that it’s experiencing difficulties. I hope that these are just a minor setback, and that we can look forward to the Swiss joining the other nations now entering a new Space Age, one that will lead to the proper exploration, industrialisation and hopefully colonisation of the solar System.

 

 

 

 

 

 

 

 

 

 

 

 

RAF Pilot Set to Join Branson Satellite Programme

October 6, 2019

There were a couple of really great, fascinating science stories in Friday’s I newspaper, which I’d like to cover before I get to the political stuff of attacking and refuting Boris Johnson, the Tories, and other right-wing nonsense.

One of these was the report that the RAF had selected a pilot to join the crews set to fly Cosmic Girl, an adapted 747 developed by Branson’s company, Virgin Orbit, send satellites into space. The article by Ewan Somerville, titled ‘RAF pilot gets space wings as first to join satellite programme’ on page 15 of the newspaper for Friday, 4th October 2019, ran

The Royal Air Force is heading for new heights after selecting its first pilot to join a space programme.

Flight Lieutenant Mathew Stannard has been assigned to a new £30m Ministry of Defence project. He will swap the cockpit of a Typhoon jet to fly a modified 747-400 plane, called Cosmic Girl, to launch satellites into orbit from mid-air, marking a “significant step” for British space endeavours.

A partnership between the RAF and space company Virgin Orbit to develop space technology, a response to billions of dollars being spent by the US, China and India, was unveiled at the Air Space Power conference in July.

Flt Lt Stannard hailed the programme a “truly unique opportunity” adding: “This programme is pushing the boundaries of our understanding of space so it’s a real privilege to be part of it and I’m looking forward to bring the skills and knowledge I gain back to the RAF.”

Over three years, Flt Lt Stannard will join several test pilots to send satellites into space from 30,000ft using a launcher attached to the Boeing 747’s fuselage. Freed from the need to launch from the ground, hi-tech satellites, developed by Britain, weighing only 300kg and described by Flt Lt Stannard as “the size of a washing machine”, could be launched from anywhere worldwide.

The RAF already has a similar small satellite, Carbonite 2, in orbit and plans for a “constellation” of them to provide HD imaging, video and secure communications. 

The mission is design to ensure Britain is not target by foreign powers for lacking its own space capabilities. It comes as the UK is due to send eight military personnel to join Operation Olympic Defender, a US-led coalition to deter “hostile acts in space” over the next 12 months.

I’m another British satellite launcher is being developed, even if the plane is made by Boeing, an American company. I’m also glad that the RAF have supplied an officer, as previous efforts to get a Brit into space have been hampered by squabbling within the armed forces. Before Helen Sharman became the first British person to go into space with the Russians to Mir, Britain was offered the opportunity by the Americans of sending an astronaut to go aboard the space shuttle. The army, air force and navy all put their men forward, and the scheme failed because of the wrangling over which one should be chosen.

I am not, however, altogether optimistic about this project as it’s a space company owned by Beardie Branson. How long has his company, Virgin Galactic, been claiming that ‘next year’ they’ll send the first tourists into space? Since the 1990s! I can see this one similarly stretching on for years. I have far more confidence in Orbex and their spaceship and launch complex now being built in Scotland.

As for using an aircraft as the first stage to send spacecraft into orbit, this was extensively discussed by the aircraft designers David Ashcroft and Patrick Collins in their book Your Spaceflight Manual: How You Could Be A Tourist in Space Within Twenty Years (London: Headline 1990). After discussing some of the classic spaceplane concepts of the past, like the XIB rocket plane and the Dynosoar, they also describe the design by the French aerospace company, Dassault, of 1964-7. This would have consisted of a supersonic jet capable of reaching Mach 4 as the first stage. The second stage would have been a rocket which would have flown at Mach 8, and used fuel from the first stage launcher. The whole vehicle was designed to be reusable.

The two authors also proposed their own designs for composite, two-stage spaceplanes, Spacecab and SpaceBus. These would have consisted of a jet-propelled first stage, which would piggy-back a much smaller rocket-driven orbiter. They estimated that Spacebus’ cost per flight would be higher than that of a 747, but much, much less than the space shuttle. It would be an estimated $250,000 against the Shuttle’s $300 million. Space bus was designed to carry 50 passengers, at a cost to each of $5,000. The pair also estimated that it would need $2bn to fund the development of a prototype Spacecab, and believed that the total development cost would be $10bn, the same as the similar Sanger concept then being developed in Germany. Although expensive, this would have been less than the $20bn set aside for the construction of the Freedom Space Station.

It’s a pity Ashcrofts and Collins’ spaceplane was not developed, though hardly unsurprising. Space research is very expensive, and the British government has traditionally been very reluctant to spend anything on space research since the cancellation of Black Arrow in 1975. The pair were also writing at the end of the 1980s, when there was little interest in the private development of spaceflight. This changed with the X-Prize in the 1990s so that we now have several private space companies, such as Elon Musk’s and Jeff Bezos’ outfits, competing to develop launchers, as well as Orbex. Hopefully, sooner or later, someone will start taking paying passengers into space and developing space industry. But somehow I doubt it’ll be Branson.

Al-Jazeera on the First Test Flight of India’s Space Shuttle

September 19, 2018

In this short clip, just over two minutes long, from Al-Jazeera, posted two years ago in 2016, Tariq Bezley reports on the first test flight by the Indian Space Agency of their space shuttle. The shuttle was launched into space on top of a rocket fired from India’s launch facility north of Chenai. The craft separated from the rocket at an altitude of 70 km and re-entered the Earth’s atmosphere, which heated it up to 2,000 degrees.

A female scientist speaking for the Observer Research Foundation, Rajeswari P Rajagopalan talks on the video about how it was necessary to test the shuttle’s heat shield.

Besley states that so far only the US, USSR, Japan and Europe have launched reusable shuttles. He states that NASA’s Space Shuttle flew 135 missions in 30 years before it was finally decommissioned. It has been replaced by the US air forces X-37B test vehicle. This unmanned vehicle was on its third mission, and had been up there for a year. However, the secrecy surrounding its missions have provoked speculation that it is a spy satellite, or is being tested to deliver weapons from space.

He then goes on to discuss the Dreamchaser, the spaceplane being developed by the private Sierra Nevada firm to service the International Space Station. Its first flight is planned for 2019. India’s space shuttle is in a much earlier stage of development, and it’s estimated that it’ll be 10 or 15 years before it is ready to fly.

Besley also discusses how India successfully put a spacecraft in orbit around Mars in 2014, becoming the first Asian nation to do so.

Rajagopan states that China has flourishing military space programme, which is a direct challenge to India, and India has to respond if it is not to be left lagging behind.

Further tests will be carried out on the Indian spacecraft, including on the supersonic scramjet engine which the Indians hope will one day power the spaceplane. The Indians say that their Mars mission cost a tenth of that of other missions to the Red Planet. Besley concludes that if their space shuttle can achieve the same savings, space travel will become much more affordable for all.

A number of countries have developed plans for different spaceplanes. The Russians had their own version of the Space Shuttle, Buran, which looked exactly like the American. It has been mothballed since the Fall of the USSR and has never flown. The French designed a small spaceplane, Hermes, which was to go on top of their Ariane rocket in the 1990s. This was very much like the American Dynosoar spaceplane proposed in the 1950s, but never actually built. The Germans also designed a spaceplane, Sanger, named after one of their leading rocket scientists. This would consist of two craft, a larger plane acting as a first stage, which would piggy-back a second plane into orbit.
And then there was the British HOTOL project of the 1980s which also used airbreathing ramjet engines to take the plane into space. This was never completed because of problems with those same engines. The technology has since been perfected, and a new British spaceplane, Skylon, has been developed. It has been forecast that it will come into service sometime in the next few years, possibly flying from spaceport launch sites in Cornwall or Scotland.

The video shows how sophisticated India’s space programme is, and I’ve no doubt that their entry into space will lower launch costs significantly. While the American shuttle was an amazing piece of engineering, it was massively expensive. It only became competitive as a launch vehicle against Ariane and the other rockets because it was heavily subsidized by the American government.

I look forward to the development of India’s spaceplane and that country joining the US and Russia in launching manned space missions. Perhaps if more countries develop reusable spacecraft, humanity will at last enter a real age of crewed space exploration and colonization.

British Spaceplane Skylon to Fly in 2020?

February 25, 2017

hotol-badge-pic

The papers also reported this week that the government was looking for somewhere to put a spaceport for a British spacecraft, which would take off from ordinary runaways. The spacecraft would be launched in 2020. One of the places suggested as a possible site for the spaceport is Newquay in Cornwall.

This sounds like Skylon, a spaceplane that has been in development by British scientists since the 1980s. The plane will use a mixture of advanced air-breathing engines and rockets to enter space. It’s sort-of the successor to an earlier spaceplane project, HOTOL, which was under development in the 1980s before it was cancelled due to problems developing its air-breathing engines.

This is really great news. There have been other spaceplanes planned by a number of other countries, quite apart from the American space shuttle, and its Russian counterpart, Buran. The Germans had the Sanger spaceplane under consideration in the 1990s, named after the German aerospace engineer and scientist, Eugen Sanger, while the French were also considering the Hermes spacecraft. This was going to be a mini-shuttle launched by their Ariane rocket, rather like the American Dyno-Soar spaceplane of the 1950s. If this does go ahead, it will mean that Britain has once again returned as an independent space power after the cancellation of the Black Knight rocket launcher in 1975.