Monday, November 3, 2008
gibralter bridge
The Gibraltar Bridge is a conceptual structure spanning the Strait of Gibraltar that would connect Europe to Africa.
Several engineers have advanced designs for a Gibraltar Bridge on various alignments and with differing structural configurations. Professor T.Y. Lin’s proposal for a crossing between Point Oliveros and Point Cires features a 14-kilometre length, deep piers, and 5000-meter spans, far exceeding the longest current bridge span.[2]
United States architect Eugene Tsui produced a revolutionary design which does not resemble any existing bridge and features an original floating and submerging concept while creating a three mile wide floating island in the middle of the Mediterranean Sea.[3]
Recent talk of a road bridge between Europe and Africa, spanning the Strait of Gibraltar, has centred on a slightly different type of suspension bridge.[4]
Although termed the "Gibraltar Bridge", it would be unrealistic for a tunnel or bridge to terminate in Gibraltar as the territory lacks the road and rail network to service such a structure.[5]
While a bridge between Europe and Africa could facilitate trade, some have questioned its potential effects on immigration.[6]
Futurist Arthur C. Clarke proposed a bridge across the Strait in his 1979 science fiction novel The Fountains of Paradise.
Recent talk of a road bridge between Europe and Africa, spanning the Strait of Gibraltar, has centred on a slightly different type of suspension bridge.[4]
Although termed the "Gibraltar Bridge", it would be unrealistic for a tunnel or bridge to terminate in Gibraltar as the territory lacks the road and rail network to service such a structure.[5]
While a bridge between Europe and Africa could facilitate trade, some have questioned its potential effects on immigration.[6]
Futurist Arthur C. Clarke proposed a bridge across the Strait in his 1979 science fiction novel The Fountains of Paradise.
The Spanish and Moroccan governments have been jointly investigating the feasibility of a tunnel underneath the strait, similar to the Channel Tunnel between the UK and France.
The idea of a tunnel for petrol/diesel powered road vehicles has been discounted due to the currently insurmountable engineering challenge of ventilation to remove exhaust gases from automobiles from a tunnel some 14 kilometres (8.7 miles) long. A new three-year study for a railway tunnel was announced in 2003. The strait depth extends to 900 metres (3000 ft), and is about 14 kilometres (8.7 miles) wide at its narrowest point. The project would be financed by two publicly owned companies in Spain and Morocco.
The decision on building the tunnel is said to be near, as Swiss engineers finalize a study to determine if the tunnel is technically possible.[3]
The idea of a tunnel for petrol/diesel powered road vehicles has been discounted due to the currently insurmountable engineering challenge of ventilation to remove exhaust gases from automobiles from a tunnel some 14 kilometres (8.7 miles) long. A new three-year study for a railway tunnel was announced in 2003. The strait depth extends to 900 metres (3000 ft), and is about 14 kilometres (8.7 miles) wide at its narrowest point. The project would be financed by two publicly owned companies in Spain and Morocco.
The decision on building the tunnel is said to be near, as Swiss engineers finalize a study to determine if the tunnel is technically possible.[3]
Thursday, October 23, 2008
Terrafugia
Terrafugia is a private company based in Woburn, Massachusetts that is developing The Transition, a roadable aircraft that the company describes as a "Personal Air Vehicle". The aircraft is designed to change configurations, enabling it to operate as a traditional road vehicle and as a general aviation airplane.
The roadable aircraft plans to incorporate new technology such as automated folding wings. The aero-auto hybrid will be designed to be capable of landing at an airport and then folding the wings in and becoming a roadable vehicle.
The Transition "Personal Air Vehicle" is expected to be released in late 2009 with an operational prototype expected in 2008. The estimated purchase price is $198,000. Owners will drive the car from their garage to an airport where they will then be able to fly within a range of 100 to 500 miles. It will carry two people plus luggage and will operate on a single tank of premium unleaded gas.
Tuesday, October 7, 2008
fog screen serves as a translucent projection screen, displaying images that literally float in the air. The result: stunning, attention-demanding displays - which is why FogScreen projection screen is used so often at product launches, trade shows, restaurants, nightclubs, museums, casinos and other venues.
It’s as simple as it is stunning. With the use of ordinary tap water and digital technology, FogScreen projection screen enables projected images to literally float in the air, creating a brand new medium to captivate and fascinate audiences. You can walk right through a FogScreen projection screen without getting wet. The microscopic fog droplets actually feel dry to the touch, just like air.
The highly innovative yet simple-to-use product has been utilized to enhance product launches, trade shows, live entertainment, nightclubs, museums, theme parks and even private parties. FogScreen has won numerous honors, including the Business 2.0 Bottom Line Design Award and Best Special Effect by the Club World Awards.
Monday, October 6, 2008
robotics
Robotics is the science and technology of robots, and their design, manufacture, and application.
Robotics Engineers also study electronics, mechanics and software.
Robotics Engineers also study electronics, mechanics and software.
The structure of a robot is usually mostly mechanical and can be called a kinematic chain (its functionality being similar to the skeleton of the human body). The chain is formed of links (its bones), actuators (its muscles) and joints which can allow one or more degrees of freedom. Most contemporary robots use open serial chains in which each link connects the one before to the one after it. These robots are called serial robots and often resemble the human arm. Some robots, such as the Stewart platform, use a closed parallel kinematical chain. Other structures, such as those that mimic the mechanical structure of humans, various animals and insects, are comparatively rare. However, the development and use of such structures in robots is an active area of research (e.g. biomechanics). Robots used as manipulators have an end effector mounted on the last link. This end effector can be anything from a welding device to a mechanical hand used to manipulate the environment.
Monday, September 29, 2008
3d printer
3D printing is a category of rapid prototyping technology. A three dimensional object is created by layering and connecting successive cross sections of material. 3D printers are generally faster, more affordable and easier to use than other additive fabrication technologies.
ultrasmall features may be made by the 3D microfabrication technique of 2-photon photopolymerization. In this approach, the desired 3D object is traced out in a block of gel by a focused laser. The gel is cured to a solid only in the places where the laser was focused, due to the nonlinear nature of photoexcitation, and then the remaining gel is washed away.
3D printing is optimized for speed, low cost, and ease-of-use, making it suitable for visualizing during the conceptual stages of engineering design when dimensional accuracy and mechanical strength of prototypes are less important. No toxic chemicals like those used in stereolithography are required, and minimal post printing finish work is needed. One need only brush off surrounding powder after the printing process. Bonded powder prints can be further strengthened by wax or thermoset polymer impregnation. FDM parts can be strengthened by wicking another metal into the part.
Thursday, September 25, 2008
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