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Cessna Citation Sovereign
The Cessna Citation Sovereign (Model 680) is an American business jet developed by Cessna, part of the Cessna Citation family. Announced at the 1998 NBAA convention, the Model 680 made its maiden flight in February 2002, certification was awarded on June 2, 2004, and deliveries began in late September. The Citation Excel fuselage was stretched and joined with an all-new, larger wing and more powerful Pratt & Whitney Canada PW306C engines for increased maximum takeoff weight and a range. The improved Sovereign+ was announced at the October 2012 NBAA for a first flight in April 2013 and deliveries in December, with added winglets and an improved flight deck and engines. Development In the late 1990s, Cessna wanted to fill a gap in its midsize line-up as demand for its Cessna Citation III/VI/VII waned, with greater cabin comfort, performance and utility with Citation reliability, good runway performance, near transcontinental flight range to compete with the Hawker 800, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcontinental Flight
A transcontinental flight is a non-stop passenger flight from one side of a continent to the other. The term usually refers to flights across the United States, between the East and West Coasts. History The first transcontinental multi-stop flight across the United States was made in 1911 by Calbraith Perry Rodgers in an attempt to win the Hearst prize offered by publisher William Randolph Hearst. Hearst offered a $US 50,000 prize to the first aviator to fly coast to coast, in either direction, in less than 30 days from start to finish. Previous attempts by James J. Ward and Henry Atwood had been unsuccessful. Rodgers persuaded J. Ogden Armour, of Armour and Company, to sponsor the flight, and in return he named the plane after Armour's grape soft drink "Vin Fiz". Rodgers left from Sheepshead Bay, New York, on September 17, 1911, at 4:30pm, carrying the first transcontinental mail pouch. He crossed the Rocky Mountains on November 5, 1911, and landed at Tournament Park in Pasad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Airspeed
The true airspeed (TAS; also KTAS, for ''knots true airspeed'') of an aircraft is the speed of the aircraft relative to the air mass through which it is flying. The true airspeed is important information for accurate navigation of an aircraft. Traditionally it is measured using an analogue TAS indicator, but as the Global Positioning System has become available for civilian use, the importance of such air-measuring instruments has decreased. Since ''indicated'', as opposed to ''true'', airspeed is a better indicator of margin above the stall, true airspeed is not used for controlling the aircraft; for these purposes the indicated airspeed – IAS or KIAS (knots indicated airspeed) – is used. However, since indicated airspeed only shows true speed through the air at standard sea level pressure and temperature, a TAS meter is necessary for navigation purposes at cruising altitude in less dense air. The IAS meter reads very nearly the TAS at lower altitude and at lower spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critical Mach Number
In aerodynamics, the critical Mach number (Mcr or M*) of an aircraft is the lowest Mach number at which the airflow over some point of the aircraft reaches the speed of sound, but does not exceed it.Clancy, L.J. ''Aerodynamics'', Section 11.6 At the lower critical Mach number, airflow around the entire aircraft is subsonic. Supersonic aircraft such as Concorde and combat aircraft also have an upper critical Mach number at which the airflow around the entire aircraft is supersonic. Aircraft flight For an aircraft in flight, the speed of the airflow around the aircraft differs considerably in places from the airspeed of the aircraft; this is due to the airflow having to speed up and slow down as it travels around the aircraft's structure. When the aircraft's airspeed reaches the critical Mach number, the speed of the airflow in some areas near the airframe reaches the speed of sound, even though the aircraft itself has an airspeed lower than Mach 1.0. This creates a weak shock wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swept Wing
A swept wing is a wing that angles either backward or occasionally forward from its root rather than in a straight sideways direction. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigated in Germany as early as 1935 by Albert Betz and Adolph Busemann, finding application just before the end of the Second World War. It has the effect of delaying the shock waves and accompanying aerodynamic drag rise caused by fluid compressibility near the speed of sound, improving performance. Swept wings are therefore almost always used on jet aircraft designed to fly at these speeds. The term "swept wing" is normally used to mean "swept back", but variants include forward sweep, variable sweep wings and oblique wings in which one side sweeps forward and the other back. The delta wing is also aerodynamically a form of swept wing. Reasons for sweep There are three main reasons for sweeping a wing: 1. to arrange the center of gravity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flap (aeronautics)
A flap is a high-lift device used to reduce the stall (flight), stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in Drag (physics), drag so they are retracted when not needed. The flaps installed on most aircraft are partial-span flaps; spanwise from near the wing root to the inboard end of the ailerons. When partial-span flaps are extended they alter the spanwise lift distribution on the wing by causing the inboard half of the wing to supply an increased proportion of the lift, and the outboard half to supply a reduced proportion of the lift. Reducing the proportion of the lift supplied by the outboard half of the wing is accompanied by a reduction in the angle of attack on the outboard half. This is beneficial because it increases the margin above the Stall (fluid dynamics), stall of the outboa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citation Longitude
The Cessna Citation Longitude is a business jet produced by Cessna, part of the Cessna Citation family. Announced at the May 2012 EBACE, the Model 700 made its first flight on October 8, 2016, with certification obtained in September 2019. The aluminum airframe has the fuselage cross-section of the Cessna Citation Latitude, Citation Latitude, stretched by a seat row. Powered by Honeywell HTF7000 turbofans, it has a new ~28° swept wing and a T-tail for a range. Design The project is perceived as the follow-on development to the now-canceled Cessna Citation Columbus. Its fuselage cross-section (83.25 inch circular section) is the same as the Cessna Citation Latitude. The aircraft has a T-tail empennage and area rule fuselage contouring. The aluminum wings incorporate moderate winglets. Construction is aluminum for both wing and fuselage. The cabin is 7 inches shorter and 6 inches narrower than the Columbus design. Initially, the Snecma Silvercrest engine was selected to power t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citation Latitude
The Cessna Citation Latitude is a business jet built by Cessna. The Model 680A was announced at the 2011 NBAA convention, the prototype first flew on 18 February 2014, it achieved FAA certification on June 5, 2015, and first deliveries began on August 27. It keeps the Model 680 Sovereign wing, twin P&WC PW306D turbofans and cruciform tail and adds a new stand-up circular fuselage with a flat floor, which was kept in the stretched, re-winged, and re-engined Cessna Citation Longitude. Development The $14.9 million Citation Latitude was announced by Cessna at the annual NBAA convention in October 2011, between the $12.6 million Citation XLS+ and the $17.5 million Citation Sovereign. The prototype first flew on 18 February 2014 in Wichita, Kansas. Cessna announced on June 5, 2015, that it had achieved FAA certification for the type. On August 27, 2015, Cessna announced the first deliveries had begun. In 2022, its equipped price was $19.305M. Design It keeps the Citation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garmin G3000
The Garmin G3000 (and G2000/G5000) is an avionics system designed by Garmin#Avionics, Garmin Aviation for light turbine aircraft. The integrated touchscreen system, containing multiple glass cockpit displays, for operating a synthetic vision system, and a three-dimensional displayed rendering of terrain. The G3000 was unveiled at the NBAA Convention in 2009. On 30 October 2019, Garmin announced that the Piper M600 and Cirrus Vision Jet would become the first general aviation aircraft certified with the company's emergency autoland, emergency Autoland system, intended to automatically land the aircraft in an emergency. The Autoland system rolled out on 18 May 2020, and is dubbed "Autonomí" by Garmin. In June 2021, it won the 2020 Collier Trophy for "the greatest achievement in aeronautics or astronautics in America" during the preceding year. Applications G2000 * Cessna 400, Cessna Corvalis TTx G3000 * Cessna CitationJet/M2, Cessna Citation CJ3+/M2 * Cirrus Vision SF50 * SOC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autothrottle
An autothrottle (automatic throttle, also known as autothrust, A/T) is a system that allows a pilot to control the power setting of an aircraft's engines by specifying a desired flight characteristic, rather than manually controlling the fuel flow. The autothrottle can greatly reduce the pilots' work load and help conserve fuel and extend engine life by metering the precise amount of fuel required to attain a specific target indicated air speed, or the assigned power for different phases of flight. A/T and AFDS (Auto Flight Director Systems) can work together to fulfill the whole flight plan. Working modes There are two parameters that an A/T can maintain, or try to attain: speed and thrust. In speed mode the throttle is positioned to attain a set target speed. This mode controls aircraft speed within safe operating margins. For example, if the pilot selects a target speed which is slower than stall speed, or a speed faster than maximum speed, the autothrottle system will maint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PW306
The Pratt & Whitney Canada PW300 series is a family of turbofan jet engines developed by Pratt & Whitney Canada specifically for business jet applications. Design and development The PW 300 series has been developed in partnership with MTU who are responsible for the low pressure turbine. The first variant, the PW305A, has the following configuration and was designed with a core flexible enough for engines with take-off thrusts from 4,500 to 7,000 lb : a single-stage fan driven by a three-stage low pressure turbine, supercharging a four-stage axial/single-stage centrifugal high-pressure compressor, driven by a two-stage high-pressure turbine. An annular combustor is used. There is no forced mixing before the bypass and core streams leave the engine through a common nozzle. The engine is controlled with a dual channel Full Authority Digital Engine Control (FADEC) system. The PW307A is a new centre-line engine developed specifically for a tri-jet application on the Dassault Falc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winglet
Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag. Although there are several types of wing tip devices which function in different manners, their intended effect is always to reduce an aircraft's drag by partial recovery of the tip vortex energy. Wingtip devices can also improve aircraft handling characteristics and enhance safety for following aircraft. Such devices increase the effective aspect ratio of a wing without greatly increasing the wingspan. Extending the span would lower lift-induced drag, but would increase parasitic drag and would require boosting the strength and weight of the wing. At some point, there is no net benefit from further increased span. There may also be operational considerations that limit the allowable wingspan (e.g., available width at airport gates). Wingtip devices help prevent the flow around the wingtip of higher pressure air under the wing flowing to the lower pressure surface on top at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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