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.

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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.

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Jousting

Jousting is a martial game or hastilude between two horsemen wielding lances with a blunted tips, often as part of a tournament. The primary aim was to replicate a clash of heavy cavalry, with each opponent endeavoring to strike the opponent while riding towards him at high speed, if possible breaking the lance on the opponent's shield or jousting armour, or unhorsing him. The joust became an iconic characteristic of the knight in Romantic medievalism. Jousting matches were notably depicted in Ivanhoe(a novel).

The term is derived from Old French joster, ultimately from a Late Latin iuxtare "to approach, to meet". The word was loaned into Middle English around 1300, when jousting was a very popular sport among the Anglo-Norman knighthood. The synonym tilt dates ca. 1510.

Jousting is based on the military use of the lance by heavy cavalry. It transformed into a specialised sport during the Late Middle Ages, and remained popular with the nobility both in England and Germany throughout the whole of the 16th century (while in France, it was discontinued after the death of King Henry II in an accident in 1559). In England, jousting was the highlight of the Accession Day tilts of Elizabeth I and James I, and also was part of the festivities at the marriage of Charles I.

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Years (by One Thousand Fingertips)

Years (by One Thousand Fingertips) is the second studio album by Canadian folk rock band Attack in Black, released on March 10, 2009 on Dine Alone Records. The album was released both on CD and on one thousand 12" vinyl records. Singles released from the album are "Beasts" (February 24, 2009) and "Liberties" (July 2009). The layout and photography present in both CD and vinyl versions were by Daniel Romano and Ian Kehoe.

Track listing

Personnel

Daniel Romano – lead vocals, guitar

Spencer Burton – guitar, organ, vocals

Ian Kehoe – bass, vocals

Ian Romano – drums, percussion

Julie Fader – guest vocals on "Birmingham"

Penelope Smart – guest vocals on "Liberties"

Ilse Kramer – guest vocals on "Liberties"

Katie – guest vocals on "Liberties"

Julie Doiron – guest vocals on "I'm a Rock"

Shotgun Jimmie – keyboard on "I'm a Rock"

Julien Brousseau – chime performance on "Liberties"

References

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Years_(by_One_Thousand_Fingertips)

Years (song)

"Years" is a song written by Kye Fleming and Dennis Morgan, and recorded by American country music artist Barbara Mandrell. It was released in December 1979 as the second single from the album Just for the Record. The song was Mandrell's third number one on the country chart. It stayed at number one for a single week and spent a total of ten weeks on the country chart.

Chart performance

Wayne Newton cover

A cover version by Wayne Newton was released as a single in 1980 and reached #35 on the Billboard Hot 100, his last Top 40 hit.

References

External links

Lyrics of this song at MetroLyrics

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Years_(song)

Millennium

A millennium (plural millennia) is a period of time equal to 1000 years. It derives from the Latin mille, thousand, and annus, year. It is often, but not always, related to a particular dating system.

Sometimes, it is used specifically for periods of a thousand years that begin at the starting point (initial reference point) of the calendar in consideration (typically the year "1"), or in later years that are whole number multiples of a thousand years after it. The term can also refer to an interval of time beginning on any date. Frequently in the latter case (and sometimes also in the former) it may have religious or theological implications (see millenarianism). Sometimes in use, such an interval called a "millennium" might be interpreted less precisely, i.e., not always being exactly 1000 years long. It could be, for example, 1050, etc.

Counting years

There are two methods of counting years, current years (the count begins at the epoch) and elapsed years (the count is of completed years since the epoch). This latter method is used in India.

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Contents

Flight dynamics

List auf Sylt

Etymology

History

Jousting

Years (by One Thousand Fingertips)

Track listing

Personnel

References

Years (song)

Chart performance

Wayne Newton cover

References

External links

Millennium

Counting years

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