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Defense and Aerospace

6 Posts tagged with the transportation tag
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(Via Vincent Founier & Ariane stock photography)

 

This is not a UFO, but it is part of a space bound vehicle. It is a fuel storage system for the Ariane 5 heavy-lift launcher rocket, aka- Automated Transfer Vehicle, a resupply spacecraft for the International Space Station. The "cryogenic stage" pod contains 132.27 metric tons of liquid oxygen and 25.84 metric tons of liquid hydrogen. After the fuel is spent, the pod is designed to re-enter the atmosphere for an oceanic splashdown.

 

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(Via Arianespace)

 

The Ariane 5 rocket can carry 20 tonnes of equipment into low earth orbit. Additionally, it can boost 10 tonnes into geostationary orbit (36,000 km).

 

The next Ariane 5 launch (the 5th of 2011) will take 2 satellites into orbit. One is the Arab Satellite Communication Organization's "Arabsat 5C" communication satellite (weighing in at 4.6 tonnes). The second is the North America servicing SES-2 communication satellite delivering "advanced digital media" to the USA and Caribbean. The U.S. Airforce is also tacking on an experimental wide-field-of-view infrared missile tracking system on the SES-2. (Watch the latest fall season TV or shoot down missiles? I am in for both.)

 

Eavesdropper

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Printable UAV Aircraft

Posted by Eavesdropper Jul 29, 2011

A team from the University of Southampton has used 3D printing techniques to build a working UAV from the ground up in just under a week. The team, led by Andy Keane and Jim Scanlan, demonstrated their effort at an air strip just a little down the road from Stonehenge. The 1.5 meter wing span, ultra-low-drag, aircraft successfully flew showing it is possible to build for each individual application.


At 100 micrometers (4 thousands) at a time, a laser traces out the 2D cross section of the design. The laser can "print" with many different types of materials, from polyamide plastic to stainless steel or titanium powder. When forming parts with the metallic powder, the team stated that it is as strong as if the parts were machined from raw/bare metal. To create a stronger formed part, an electron laser sintering is used, instead of the conventional laser, to melt the powder completely.


Of course, the electronics in the craft are not printed. At least not yet. http://www.element14.com/community/community/doittogetherblog/blog/2011/07/14/grow-electronics-by-the-molecule


Eavesdropper

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SpaceX, a California company, had tested their Falcon 9 rocket and capsule successfully back in November 2010. Now they are planning a docking of their new Dragon capsule aboard the International Space Station (ISS) in December of this year, 2011. The Falcon Heavy rocket will launch on November 30th, and the capsule will then take a week long tour around the planet before docking on the ISS.


Following the shutdown of the shuttle program, the ISS will need another way to receive supplies. This is SpaceX's mission, to provide an alternative to sending supplies, satellites, and people into space. Being the only alternative to Russian Soyuz missions to get people into orbit, SpaceX is sure to make enormous profits.


SpaceX also stated that their Dragon capsule is far safer than the former shuttle program, "astronauts flying on Dragon will be considerably safer." I do hope this is true. There has been far to many shuttle disasters to date.


Eavesdropper

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Boeing 747-8 via Boeing

 

Seeing a trend in aircraft biofuel usage?

 

Boeing has recently demonstrated the use of a camelina-based biofuel in one of their unmodified 747-8 Freighter airplanes. The camelina biofuel is a mixture of 85% kerosene fuel, called Jet-A, and 15% processed oils from the camelina organic plant. Camelina plant seeds have an oil content in the range of 37-41%, and it is rich in omega-3 fatty acids. When the oils are heated in the excess of 450°C in the absence of air (oxygen), it causes the molecules to break forming chemical compounds similar to those found in petrodiesel. This process is called pyrolysis, and sometimes thermal cracking or cracking.

 

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Camelina plant, via Camelina Wiki

 

The camelina plant was grown in Montana, USA, and Honeywell's UOP processed the plant into the biofuel used in the demonstration. The 747-8 cargo plane made its 4,989 mile transatlantic flight without a single issue. The fuel comes from a 5 year program that Boeing and several other aircraft companies started as a way to develop sustainable biofuels.

 

Eavesdropper

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The Robotic Refueling Mission via NASA

 

Despite the retiring of the space shuttle program, NASA sent up a space craft refueling and repairing platform. The Robotic Refueling Mission (RRM) sent on the Atlantis space shuttle on July 8th, 2011 and installed in 15 minutes on the International Space Station. The RRM features a twin-armed robot dubbed "Dextre." The Dextre, Special Purpose Dexterous Manipulator, will be controlled by a person located on Earth. Using Dextre will make repairs and refueling to cost far lower than with an astronaut on a spacewalk. Overall, the RRM with Dextre will prolong space travel for crafts already orbiting the planet.

 

Another use of the RRM comes in repairing satellites, where there are already hundreds out of commission at the moment. This is a service never before attempted. NASA's Satellite Servicing Capabilities Officer Benjamin Reed said, "We anticipate [the RRM] enabling future missions, future capabilities, for the international aerospace community."

 

We're going to make this data available to everybody," said RRM project manager at the Satellite Servicing Capabilities Office Frank Cepollina. "That is, all commercial industry that may want to leap off and start their own ventures."

 

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Heavy-Lift rocket concept via NASA

 

On related space news, the U.S. Congress demands to know why a new heavy lifting rocket is not completed by now. With the cancellation of some space programs by the Obama administration has led to many delays. Since the retirement of the shuttle program a new type of space craft is needed to get satellites, equipment, and people out of the atmosphere. The Space Launch System heavy-lift rocket is what President Obama is now backing as a contender for a new vehicle. However, current plans will not have a manned mission aboard the new craft until 2020. Which could be in line with President Obama's wishes for a manned mission to an asteroid by 2025 and to Mars by 2035.

 

Eavesdropper

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MyCopter Concept Image via Jan Kranendonk

 

Personal aerial vehicles (PAV) are coming in droves. Does it make sense to let the general populous fly them all over the place? The European Commission (EC) wants to know.

 

A €4.3 million euro EC research project called "MyCopter" will focus helicopter-style PAVs. The project will feature automatically flying vehicles as they swarm around each other. The choice of helicopter based transport is due to the fact a runway is not needed, a vertical takeoff is possible from a parking space. Unlike the 2,500 feet need for the Terrafugia Airplane Car.

 

MyCopter will start with 10 quad-copter robots. A research team from the University of Liverpool, UK, and the Swiss Federal Institute of Technology in Lausanne (EDFL) will be going over sensing, collision avoidance, communications, and speed and reliability of other wireless services like GPS for autonomous flight. Dario Floreano's team from EPFL have created 360 degree vision and acoustic systems for the 10 bots in the study. When visibility is low Floreano said, "You can work out the speed and direction of approaching aircraft from the sound they make [via the acoustic sensors]."

 

A set of rules for autonomous flight will eventually come from this research project. Will all of us start fly flying around anytime soon though?

 

Eavesdropper