Vortex (satellite)

Vortex, previously known as Chalet, was a class of spy satellite operated by the United States during the 1980s and 1990s to collect signals intelligence (SIGINT) from high Earth orbit. The Vortex satellites were operated by the National Reconnaissance Office for the United States Air Force and listened to radio transmissions originating from Earth or space. The intercepted data is believed to have been fed into and analyzed by the National Security Agency ECHELON system.

The satellites each had a mass of approximately 1,800 kilograms and are operated from non-stationary geosynchronous orbits. Each reportedly carried a 38-meter-diameter umbrella-like reflecting dish to collect radio signals from Earth. At least six launch attempts were made of Chalet/Vortex satellites between 1978 and 1989. The Chalet/Vortex satellites replaced the older generation of Canyon satellites, and were superseded by the larger, more capable Mercury satellites.

Launches

See also

Vortex (album)

Vortex is a remix album by the group Collide featuring remixes of songs from their albums Chasing the Ghost (2000) and Some Kind of Strange (2003) and 3 new covers.

Track listing

CD 1 - Vortex

CD 2 - Xetrov

Vortex (Thorpe Park)

Vortex is a KMG Afterburner at Thorpe Park, an amusement park in Chertsey, Surrey, England. It was installed in the Lost City area of the park in 2001. It opened on 25 May, seven weeks after the opening of the 2001 season.

Riders sit in seats arranged in a circle facing inwards, there are eight gondolas with four seats on each. After the over-the-shoulder restraints have been lowered and checked, the platform lowers. The seats then begin to rotate, and after approximately one rotation the ride begins to swing. The ride swings back and forth, swinging up to a maximum height of 20 metres and angle of 120 degrees at 15rpm. After several full height swings, the ride then begins to slow before coming to a halt, the platform is then raised and riders fast track and single rider questions operate.

References

External links

Vortex (software)

Vortex is a high-fidelity, realtime physics engine developed by CM Labs Simulations that simulates rigid body dynamics, collision detection, contact determination, and dynamic reactions. Vortex adds accurate physical motion and interactions to objects in visual-simulation applications for operator training, mission planning, product concept validation, vehicle and robotics testing, haptics devices, immersive and virtual reality (VR) environments.

The Vortex C++ SDK has several modules that simulate physics-based particles, sensors, floating bodies, cable systems, grasping, and wheeled and tracked vehicles. Developers integrate their projects into 3D visualization frameworks such as OpenSceneGraph (OSG) and Vega Prime, and deploy them in environments that contain software-in-the-loop (SIL), MATLAB, hardware-in-the-loop (HIL), and motion platform components.

History

Vortex is developed by CM Labs Simulations Inc., a private company established in Montreal in 2001. CM Labs was created when the management of MathEngine Canada Inc. purchased a portion of the business from MathEngine PLC, the parent company in the UK. MathEngine Canada Inc. was originally the research and development team responsible for creating the Karma physics simulation engine for computer games.

Chalet

A chalet (pronounced /ˈʃæleɪ/ in British English; in American English usually /ʃæˈleɪ/), also called Swiss chalet, is a type of building or house, native to the Alpine region in Europe. It is made of wood, with a heavy, gently sloping roof and wide, well-supported eaves set at right angles to the front of the house.

Definition and origin

The term chalet stems from Arpitan speaking part of Switzerland and French Savoy and originally referred to the hut of a herder.

Many chalets in the European Alps were originally used as seasonal farms for dairy cattle which would be brought up from the lowland pastures during the summer months. The herders would live in the chalet and make butter and cheese in order to preserve the milk produced. These products would then be taken, with the cattle, back to the low valleys before the onset of the alpine winter. The chalets would remain locked and unused during the winter months. Around many chalets there are small windowless huts called mazots which were used to lock away valuable items for this period.

CHALET

CHALET was a mnemonic indicating a protocol used by UK emergency services to report situations which they may be faced with, especially as it relates to major incidents.

Since 2013, the UK emergency services have been using new doctrine developed by the Joint Emergency Services Interoperability Principles (JESIP), which sets out the mnemonic METHANE as an aid to communicating information from the incident scene. CHALET and METHANE dictate the form in which the receiving control station should get information from the first person or officer on scene. In some jurisdictions, the alternative ETHANE may be used.

CHALET stands for: