Aerodynamics is the study of the motion of air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics, and is an important domain of study in aeronautics. The term aerodynamics is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simulations has formed a rational basis for the development of heavier-than-air flight and a number of other technologies. Recent work in aerodynamics has focused on issues related to compressible flow, turbulence, and boundary layers and has become increasingly computational in nature.
Nirvana was an American rock band formed in Aberdeen, Washington, in 1987. Founded by lead singer and guitarist Kurt Cobain and bassist Krist Novoselic, the band went through a succession of drummers, most notably Chad Channing, before recruiting Dave Grohl in 1990. Nirvana's success popularized alternative rock, and they were often referenced as the figurehead band of Generation X. Despite a short mainstream career spanning only three years, their music maintains a popular following and continues to influence modern rock culture.
The aircraft hijackers in the September 11 attacks were 19 men affiliated with jihadist organization al-Qaeda. They hailed from four countries; 15 of them were citizens of Saudi Arabia, two were from the United Arab Emirates, one was from Egypt, and one from Lebanon. To carry out the attacks, the hijackers were organized into four teams each led by a pilot-trained hijacker who would commandeer the flight with three or four "muscle hijackers" who were trained to help subdue the pilots, passengers, and crew. Each team was assigned to a different flight and given a unique target to crash their respective planes into. Mohamed Atta was the assigned ringleader over all four groups.
A drag queen is a person, usually male, who uses drag clothing and makeup to imitate and often exaggerate female gender signifiers and gender roles for entertainment purposes. Historically, drag queens have usually been gay men, and have been a part of gay culture.
John Zorn is an American composer, conductor, saxophonist, arranger and producer who "deliberately resists category". His avant-garde and experimental approaches to composition and improvisation are inclusive of jazz, rock, Jewish music, hardcore, classical, contemporary, surf, metal, soundtrack, ambient, and world music. Rolling Stone noted that "[alt]hough Zorn has operated almost entirely outside the mainstream, he's gradually asserted himself as one of the most influential musicians of our time".
Jim O'Rourke is an American musician, instrumentalist, composer, singer-songwriter and record producer. He is best known for his numerous solo and collaborative music projects, many of which are instrumental, and has been acclaimed for his music that spans varied genres, including avant-garde styles such as ambient, noise and minimalism, and styles of rock like indie rock and post-rock. He has been associated with the Chicago experimental and improv scene, as well as with New York City when he relocated there in 2000 for his tenure as a member of American indie rock band Sonic Youth. He subsequently moved to Japan and has since been a Japanese resident.
Drag kings have historically been mostly female performance artists who dress in masculine drag and personify male gender stereotypes as part of an individual or group routine. As documented in the 2003 Journal of Homosexuality, in more recent years the world of drag kings has broadened to include performers of all gender expressions. A typical drag show may incorporate dancing, acting, stand-up comedy and singing, either live or lip-synching to pre-recorded tracks. Drag kings often perform as exaggeratedly macho male characters, portray characters such as construction workers and rappers, or impersonate male celebrities like Elvis Presley, Michael Jackson and Tim McGraw. Drag kings may also perform as personas that do not clearly align with the gender binary. Drag personas that combine both stereotypically masculine and feminine traits are common in modern drag king shows.
Flight or flying is the motion of an object through an atmosphere, or through the vacuum of outer space, without contacting any planetary surface. This can be achieved by generating aerodynamic lift associated with gliding or propulsive thrust, aerostatically using buoyancy, or by ballistic movement.
The sound barrier or sonic barrier is the large increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound. When aircraft first approached the speed of sound, these effects were seen as constituting a barrier, making faster speeds very difficult or impossible. The term sound barrier is still sometimes used today to refer to aircraft approaching supersonic flight in this high drag regime. Flying faster than sound produces a sonic boom.
Kevin Aviance is an American drag queen, club/dance musician, fashion designer, and nightclub personality. He is a personality in New York City's gay scene and has performed throughout North America, Europe and Asia. He is a member of the House of Aviance, one of the most notable vogue-ball houses in the U.S. He is known for his trademark phrase, "Work. Fierce. Over. Aviance!" He won the 1998 and 1999 Glammy Awards, the award for nightlife personalities in New York City. He has worked with several artists, including Janet Jackson and Whitney Houston. In December 2016, Billboard Magazine ranked him as the 93rd most successful dance artist of all-time.
System 7 is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. It was launched on May 13, 1991, to succeed System 6 with virtual memory, personal file sharing, QuickTime, TrueType fonts, the Force Quit dialog, and an improved user interface.
The NASA X-43 was an experimental unmanned hypersonic aircraft with multiple planned scale variations meant to test various aspects of hypersonic flight. It was part of the X-plane series and specifically of NASA's Hyper-X program developed in the late 1990s. It set several airspeed records for jet aircraft. The X-43 is the fastest jet-powered aircraft on record at approximately Mach 9.6.
The International Standard Atmosphere (ISA) is a static atmospheric model of how the pressure, temperature, density, and viscosity of the Earth's atmosphere change over a wide range of altitudes or elevations. It has been established to provide a common reference for temperature and pressure and consists of tables of values at various altitudes, plus some formulas by which those values were derived. The International Organization for Standardization (ISO) publishes the ISA as an international standard, ISO 2533:1975. Other standards organizations, such as the International Civil Aviation Organization (ICAO) and the United States Government, publish extensions or subsets of the same atmospheric model under their own standards-making authority.
Leslie Feinberg was an American butch lesbian, transgender activist, communist, and author. Feinberg authored Stone Butch Blues in 1993. Her writing, notably Stone Butch Blues and her pioneering non-fiction book Transgender Warriors (1996), laid the groundwork for much of the terminology and awareness around gender studies and was instrumental in bringing these issues to a more mainstream audience.
John Knudsen Northrop was an American aircraft industrialist and designer who founded the Northrop Corporation in 1939.
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers, two solid surfaces, or between a fluid and a solid surface. Drag forces tend to decrease fluid velocity relative to the solid object in the fluid's path.
Nathan Jonas "Joey" Jordison was an American musician. He was the original drummer of the nu metal band Slipknot, in which he was designated #1, and the guitarist for the horror punk supergroup Murderdolls.
Sylvia Rivera was an American gay liberation and transgender rights activist who was also a noted community worker in New York. Rivera, who identified as a drag queen for most of her life and later as a transgender person, participated in demonstrations with the Gay Liberation Front.
Ian Folke Svenonius is an American author, filmmaker, and musician with various Washington, D.C.–based punk bands including Nation of Ulysses, the Make-Up, Weird War, XYZ, Too Much, Escape-ism, and Chain & the Gang. Between his numerous projects, Svenonius has released more than 22 full-length albums and over 20 singles, EPs, and splits. A published author and online talk show host, Svenonius' projects share a tongue-in-cheek, radical left political ideology.
