Posts Tagged ‘Airplanes’

The Sky At Night Looks at Britain in Space

October 19, 2018

I just managed to catch the weekday repeat a day or so ago of this month’s Sky at Night, in which presenters Maggie Aderin-Pocock and British astronaut Tim Peake looked at the history of Britain in space, and forward to the country’s future in the deep black. The programme’s changed a bit over the past few years in the case of its presenters. It was famously presented by Sir Patrick Moore from its beginning in the 1950s until he passed away a few years ago. This made the programme the longest-running show presented by the same person. Aderin-Pocock joined it before Moore’s departure. She’s a black woman scientist, with a background in programming missile trajectories. She’s obviously very intelligent, enthusiastic and very definitely deserves her place on the show. But I wish she’d done a job that didn’t involve the military use of rocket technology, however much this is needed as part of national defence.

Aderin-Pocock was speaking to one of the management officials from Orbex, a new, British company, which has developed a rocket launcher and intends to open a spaceport in one of the more deserted areas of Scotland. The rocket will stand about 17 meters tall, using propane and High Test Peroxide as fuel. High Test Peroxide is a highly concentrated version of the hydrogen peroxide used by hairdressers to bleach peoples’ hair. The use of propane is particularly important, as it’s lighter than conventional rocket fuels, meaning that the rocket doesn’t have to carry as much fuel to lift off into space. Advances in satellite design have also allowed the rocket to be smaller than other spacecraft used elsewhere. British universities have succeeded in developing microsatellites – satellites that are much, much smaller than some of the satellites put into orbit, but which can perform the same functions. As these satellites are smaller and lighter, they only need a relatively smaller, lighter rocket to launch them.

The Scottish launch complex also wasn’t going to be as big as other, larger, major launch complexes, such as those of NASA, for example. I think it would still contain a launch tower and control buildings. As well as the official from Orbex, the show also talked to a woman representing the rural community in the part of Scotland, where they were planning to build it. She admitted that there would be problems with building it in this part of the Scots countryside. However, the community was only going to lease the land, not sell it to Orbex, and care would be taken to protect the farms of the local crofters and the environment and wildlife. Like much of rural Britain, this was an area of few jobs, and the population was aging as the young people moved away in search of work. She looked forward to Orbex and its spaceport bringing work to the area, and creating apprenticeships for the local young people.

The programme went on to explain that this would be the first time for decades that a British company was going to build a British rocket to launch a British satellite. From what looked the British space museum in Manchester, Time Peake stood under the display of Britain’s Black Knight rocket and the Prospero satellite. He explained how the rocket launched the satellite into space from Australia in 1975. However, the project was then cancelled, which meant that Britain is the only country so far which has developed, and then discarded rocket technology.

But Black Knight wasn’t the only space rocket Britain developed. Peake then moved on to talk about Skylark, a massively successful sounding rocket. Developed for high altitude research, the rocket reached a maximum of altitude of 400 km in the few minutes it was in flight. At its apogee – its maximum distance from Earth – the vehicle briefly experienced a few minutes of zero gravity, during which experiments could be performed exploring this environment. The Skylark rocket was used for decades before it was finally cancelled.

Aderin-Pocock asked the official from Orbex how long it would be before the spaceport would be up and running. The manager replied that this was always an awkward question to answer, as there was always something that meant operations and flights would start later than expected. He said, however, that they were aiming at around the end of 2020 and perhaps the beginning of 2021.

Orbex are not, however, the only space company planning to open a spaceport in Britain. Virgin Galactic have their own plans to launch rockets in to space from Cornwall. Their vehicle will not, however, be launched from the ground like a conventional rocket, but will first be carried to a sufficiently high altitude by an airplane, which would then launch it. I’m not a betting man, but my guess is that of the two, Orbex is the far more likely to get off the ground, as it were, and begin launching its rocket on schedule. As I’ve blogged about previously, Branson has been telling everyone since the late 1990s at least, that Virgin Galactic are going to be flying tourists into space in just a few months from now. This fortnight’s Private Eye published a brief list of the number of times Branson had said that, with dates. It might be that Branson will at last send the first of his aspiring astronauts up in the next few months, as he claimed last week. But from his previous form, it seems far more likely that Orbex will start launches before him, as will Branson’s competitors over the pond, Elon Musk and Jeff Bezos.

When asked about the company’s capability of perfecting their technology, Orbex’s manager not stressed the skill and competence of the scientists, technicians and engineers working on the project. This included not just conventional space scientists, but also people, who had personally tried and failed to build their own spacecraft. He said that it was extremely important to fail to build rockets. He’s obviously referring to the many non-professional, hobby rocketeers out there trying to build their own spacecraft. He didn’t mention them, but one example would be the people at Starchaser, who started out as a small group of enthusiasts in Yorkshire but have gone on to create their own space company, now based across the pond in America. I think it’s brilliant that amateurs and semi-professionals have developed skills that the professionals in the industry find valuable. And the failures are important, as they show what can go wrong, and give the experience and necessary information on how to avoid it. I don’t think the rocket will be wholly built in this country. The manager said that some of it was being constructed in Copenhagen. This sounds like Copenhagen Suborbitals, a Danish team of rocket scientists, who are trying to put a person into space. They’re ex-NASA, I believe, but it’s a small, private venture. They have a webpage and have posted videos on YouTube, some of which I’ve reblogged. They’ve also said they’re keen for people to join them, or start their own rocket projects.

I’d been looking forward to that edition of the Sky at Night for the past week, but when the time came, it slipped my mind that it was on. I’m very glad I was able to catch it. If Orbex are successful, it will be the first time that a British satellite will launch a British satellite from here in Britain. And it sounds really optimistic. Not only will Britain be returning to space rocket development, but the Scots spaceport sounds like it will, hopefully, bring work to a depressed area. I’m also confident that the local environment there will also be preserved. The launch complex around NASA is necessarily so remote from other buildings, that it’s actually become a wildlife haven. So much so that it’s now a location for birdwatching.

When it was announced that they were planning to build a new spaceport in Scotland, I assumed it would be for Skylon, the British spaceplane. There had been articles in the paper about the spacecraft, which stated that it would be launched either from Scotland or Cornwall. It seems I was wrong, and that it’s Orbex’s rocket which will be launched there instead. But nevertheless, I wish Orbex every success in their venture, and hope that sometime soon Skylon will also join them in flight out on the High Frontier.

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Flying Replica of Messerschmitt Komet Rocketplane at German Airshow

October 16, 2018

I found this little video of a modern, flying replica of the Messerschmidt 163 Komet over on YouTube, put up by Knight Flight Video. From the some of the speech you can hear, it seems that it was filmed at an airshow in Germany. The Komet was developed by the Germans during the Second World War to intercept allied bombers. Unlike conventional aircraft at the time, it was powered by a rocket engine. However, this also made it a virtual deathtrap to fly. The engine was a liquid fuel rocket motor. The fuels used were hypergolic, which meant that they automatically ignited when mixed together without needing a separate ignition system. However, they were also highly acidic, and so would cause severe burns if spilled onto the pilot. I’ve also got a feeling that once the fuels started burning, they were difficult to put out as the fuel contained its own oxidizer. Which was another serious hazard to the pilot. It also had a very short burn time – about four minutes. By the end of that very brief interval, the plane would have shot past the allied bombers it was supposed to shoot down. It would then have to glide back to Earth. I think the vehicle had originally been developed as a glider for service in one of the Nazi schemes to get German boys interested in flying, and then eventually joining the Luftwaffe as pilots – a sort of Nazi Air Cadets. The rocket engine was added to the design later. The commenters on this video also state that the absence of a conventional tail meant that the plane was difficult to land. It also lacked wheeled undercarriage, and landed on a skid instead. This resulted in many of its pilots breaking their backs on landing.

The replica plane is also painted red, whereas I think most of the Komets that were actually flown were painted standard German military grey. However, its red colour probably comes from a suggestion of one Luftwaffe officer or Nazi apparatchik that the planes should be painted ‘Richtofen red’, after the plane from by Manfred von Richtofen, the Red Baron, during the First World War. The person, who made this suggestion believed that it would serve to terrify the allied airmen, but others have pointed out that if the Germans had followed his advice, it would immediately mark them out as targets and result in the planes getting shot down sooner by the RAF.

Looking at the video, it appears to me that the replica plane is really glider being towed by the Dornier aircraft that precedes it, although I can’t see a wire between the two. It clearly isn’t using a propeller, and it is very definitely not using a rocket engine. If it was, it would be moving so swiftly that I doubt there’d be much time to see it before it was a small dot in the sky. Plus the fact that I doubt very many pilots would wish to risk their lives in a fully accurate, working replica using the original rocket engine.

For all its horrendous faults, this was a significant advance in the use of rocket technology and in aircraft design. I think the Komet was produced as part of German aircraft engineers’ research into delta wing designs. After the allied victory, this research was seized by the allies, including British aircraft engineers and designers. They developed it further, leading to the creation of the Vulcan bomber, Concorde, and possibly the Space Shuttle.

Megabot’s Paintballing Combat Robot

December 7, 2015

Yesterday, I posted a piece about the ‘Beetle’, a giant construction robot built between 1958 to 1962 by the US air force for constructing atomic planes. This is not quite as awesome, but almost. It’s video from a maker’s fair in the US, in which the guys from Megabots talk about the giant robot they built. This robot is also built for warfare, but only of the simulated kind. Instead of real weapons, it has a giant paintball gun. They’re intending to produce a walking version of the droid, and then kits so that others can build their own. Then they hope to stage fights between in a stadium.

Here’s the video:

It’s very much a scaled-up, and more terrifying and amazing version of Robot Wars. That was the TV programme on in the 1990s-early 2000s presented by Jeremy Clarkson, Philippa Forester and Craig Charles, which showed battles between small, home-built, radio controlled robots. That was fascinating to watch, and some of the robots devised by ordinary people working at home were fascinating and ingenious. This looks like offering the same on a mind-blowing scale.

Here’s the titles from the UK Robot Wars series.

It’s all rather like the 1989 SF film, Robot Jox, directed by Stuart Gordon, the man who brought the world the classic HP Lovecraft-based horror movie, Reanimator. Robot Jox was set in a post-Holocaust future, where war had been outlawed. Instead international conflicts were settled through a battle of champions, humans controlling giant fighting robots, as shown in the trailer here.

Hopefully, the Megabots’ scheme should be rather less lethal, if no less exciting.