Technical standard
A technical standard is an established norm or requirement in regard to technical systems. It is usually a formal document that establishes uniform engineering or technical criteria, methods, processes and practices. In contrast, a custom, convention, company product, corporate standard, etc. that becomes generally accepted and dominant is often called a de facto standard.
A technical standard can also be a controlled artifact or similar formal means used for calibration. Reference standards and certified reference materials have an assigned value by direct comparison with a reference base. A primary standard is a technical standard which is not subordinate to any other standard but serves to define the property in question. Primary standards are usually kept in the custody of a national standards body. A hierarchy of secondary, tertiary, and check standards are calibrated by comparison to the primary standard; only those on the lowest level are used for actual measurement work in a metrology system. A key requirement in this case is (metrological) traceability, an unbroken paper trail of calibrations back to the primary standard.
List of technical standard organisations
International standards organizations
Flight dynamics
Flight dynamics is the study of the performance, stability, and control of vehicles flying through the air or in outer space. It is concerned with how forces acting on the vehicle influence its speed and attitude with respect to time.
In fixed-wing aircraft, the changing orientation of the vehicle with respect to the local air flow is represented by two critical parameters, angle of attack ("alpha") and angle of sideslip ("beta"). These angles describe the vector direction of airspeed, important because it is the principal source of modulations in the aerodynamic forces and moments applied to the aircraft.
Spacecraft flight dynamics involve three forces: propulsive (rocket engine), gravitational, and lift and drag (when traveling through the earths or any other celestial atmosphere). Because aerodynamic forces involved with spacecraft flight are very small, this leaves gravity as the dominant force.
Aircraft and spacecraft share a critical interest in their orientation with respect to the earth horizon and heading, and this is represented by another set of angles, "yaw," "pitch" and "roll" which angles match their colloquial meaning, but also have formal definition as an Euler sequence. These angles are the product of the rotational equations of motion, where orientation responds to torque, just as the velocity of a vehicle responds to forces. For all flight vehicles, these two sets of dynamics, rotational and translational, operate simultaneously and in a coupled fashion to evolve the vehicle's state (orientation and velocity) trajectory.
List auf Sylt
List auf Sylt (known as List until 31 December 2008) is the northernmost municipality in Germany, located on the North Sea island of Sylt close to Denmark in the district of Nordfriesland in the state of Schleswig-Holstein.
Etymology
List derived from the Middle Low German Liste (ledge, bar or edge).
History
List was originally a Danish settlement. It was first mentioned in 1292 (Lystum). The original village was destroyed by the great flood of 1364. The settlement was rebuilt further east from the previous location. In the mid-15th century, a church named St. Jürgen was mentioned. In a treaty of 1460, Schleswig and Holstein were linked to the Danish crown, but List remained part of the royal enclaves, small areas of the Kingdom of Denmark situated within the Duchy of Schleswig, but directly controlled by the Danish king.
From the 16th century, the people of List mostly made a living from Oyster farming, raising sheep and collecting and selling gull eggs. At the time, List was an important protective anchorage. In 1644, a Swedish-Dutch fleet of 26 ships commanded by Admiral Thijssen was attacked in the Lister Tief and defeated by Danish ships commanded by king Christian IV of Denmark. The anchorage north of today's town was named Königshafen to honour this event.
Standard (1911 automobile)
The Standard was a German automobile manufactured between 1911 and 1912. The car was produced at Berlin-Charlottenburg using a rotary valve engine built by Henriod, which was unreliable and had not been fully developed; consequently, it was very unpopular.
References
Standard Superior
Standard Superior was an automobile, produced from 1933 to 1935 by Standard Fahrzeugfabrik of Ludwigsburg, Germany, founded by motorcycle maker Wilhelm Gutbrod and unrelated to the Standard Motor Company of England. These small cars were designed according to the patents by Josef Ganz and featured rear-mounted two-stroke engines.
After World War II, the same company made Gutbrod cars and introduced the model Gutbrod Superior.
History
In the first half of 1932, Wilhelm Gutbrod, the President of the Standard Fahrzeugfabrik, came into contact with German engineer Josef Ganz. Ganz had been working on a small car design since the early 1920s and had so far built two prototypes, one for Ardie in 1930 and one for Adler in 1931, called the Maikäfer (May Beetle). After a demonstration with the Maikäfer by Ganz, Gutbrod was most interested to build a small car according to this design. The Standard Fahrzeugfabrik then purchased a license from Ganz to develop and build a small car according to his design. The prototype of this new model, which was to be called Standard Superior, was finished in 1932. It featured a tubular chassis, a mid-mounted engine, and independent wheel suspension with swing-axles at the rear.
Standard (Italian automobile)
The Standard was an Italian automobile manufactured from 1906 until 1908 by the Fabbrica Automobili Standard of Torino. The company produced a 10/14 hp four-cylinder which was sometimes marketed under the name FAS.
