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Northrop N-9M
The Northrop N-9M was an approximately one-third scale, span all-wing aircraft used for the development of the full size, wingspan Northrop XB-35 and YB-35 flying wing long-range, heavy bomber. First flown in 1942, the N-9M (M for Model) was the third in a lineage of all-wing Northrop aircraft designs that began in 1929 when Jack Northrop succeeded in early experiments with his single pusher propeller, twin-tailed, twin-boom, all stressed metal skin Northrop X-216H monoplane, and a decade later, the dual-propeller N-1M of 1939–1941.O'Leary 2007, p. 62. Northrop's pioneering all-wing aircraft would lead Northrop Grumman many years later to eventually develop the advanced B-2 Spirit stealth bomber, which debuted in 1989 in US Air Force inventory. Design and development On 30 October 1941, the preliminary order for development of the B-35 Flying Wing bomber was confirmed, including engineering, testing, and most importantly a 60 ft (18 m) wingspan, one-third sc ... [...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 Wikimedia project, 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 Magazine, 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 organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller (aeronautics)
An aircraft propeller, also called an airscrew,Beaumont, R.A.; ''Aeronautical Engineering'', Odhams, 1942, Chapter 13, "Airscrews". converts rotary motion from an engine or other power source into a swirling slipstream which pushes the propeller forwards or backwards. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically variable "constant-speed" type. The propeller attaches to the power source's driveshaft either directly or through reduction gearing. Propellers can be made from wood, metal or composite materials. Propellers are most suitable for use at subsonic airspeeds generally below about , although supersonic speeds were achieved in the McDonnell XF-88B experimental propeller-equipped aircraft. Supersonic tip-speeds are used in some aircraft like the Tupolev Tu-95, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northrop YB-49
The Northrop YB-49 was an American prototype jet-powered heavy bomber developed by Northrop Corporation shortly after World War II for service with the United States Air Force. The YB-49 featured a flying wing design and was a turbojet-powered development of the earlier, piston-engined Northrop XB-35 and YB-35. The two YB-49s actually built were both converted YB-35 test aircraft. The YB-49 never entered production, being passed over in favor of the more conventional Convair B-36 piston-driven design. Design work performed in the development of the YB-35 and YB-49 nonetheless proved to be valuable to Northrop decades later in the eventual development of the B-2 stealth bomber, which entered service in the early 1990s. Design and development With the XB-35 program seriously behind schedule by 1944, and the end of piston-engined combat aircraft in sight, the production contract for this propeller-driven type was cancelled in May of that year. Nevertheless, the Flying Wing de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northrop N-1
The Northrop N-1 (''Northrop Model 1'') was a projected flying wing medium bomber designed by Jack Northrop. Design and development The N-1 was a development of an earlier flying wing bomber concept from 1937, when Jack Northrop worked for Douglas Aircraft Company at El Segundo, California. This concept featured a fuselage that protruded forward of the leading edge of the wing, two pusher propellers, and vertical stabilizers on the tips of the wings. Its engines were never specified, but its defensive armament was to consist of a nose and tail turrets. A wind tunnel model of the concept was built and tested, but the project was abandoned shortly after Northrop left Douglas. Northrop continued work on the bomber after he formed his own company, Northrop Corporation, in 1939. In response to the United States Army Air Corps' XC-219 specification, which called for a new high-altitude medium bomber, Northrop made several major changes to the design and gave it the model number N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NACA Airfoil
The NACA airfoils are airfoil shapes for aircraft wings developed by the National Advisory Committee for Aeronautics (NACA). The shape of the NACA airfoils is described using a series of digits following the word "NACA". The parameters in the numerical code can be entered into equations to precisely generate the cross-section of the airfoil and calculate its properties. Origins NACA initially developed the numbered airfoil system which was further refined by the United States Air Force at Langley Research Center. According to the NASA website: Four-digit series The NACA four-digit wing sections define the profile by: # First digit describing maximum camber as percentage of the chord. # Second digit describing the distance of maximum camber from the airfoil leading edge in tenths of the chord. # Last two digits describing maximum thickness of the airfoil as percent of the chord. For example, the NACA 2412 airfoil has a maximum camber of 2% located 40% (0.4 chords) from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Transportation Safety Board
The National Transportation Safety Board (NTSB) is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and incidents, certain types of highway crashes, ship and marine accidents, pipeline incidents, bridge failures, and railroad accidents. The NTSB is also in charge of investigating cases of hazardous materials releases that occur during transportation. The agency is based in Washington, D.C. It has four regional offices, located in Anchorage, Alaska; Denver, Colorado; Ashburn, Virginia; and Seattle, Washington. The agency also operates a national training center at its Ashburn facility. History The origin of the NTSB was in the Air Commerce Act of 1926, which assigned the United States Department of Commerce responsibility for investigating domestic aviation accidents. Before the NTSB, the Federal Aviation Administration's (FAA; at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norco, California
Norco is a city in Riverside County, California, in the United States. Norco is known as Horsetown, USA and prides itself on being a "horse community," with horse trails, hitching posts, and corrals, and city ordinances requiring construction to have a "traditional, rustic... Western flavor". As of the 2020 census, the city population was 26,316, down from 27,063 at the 2010 census. History The area was part of Rancho La Sierra granted in 1846 by Governor Pío Pico to Vicenta Sepulveda. The city's name is a portmanteau of "North Corona", named after the North Corona Land Company. Norco had its "grand opening" on Mother's Day, May 13, 1923, and was later incorporated as a city on December 28, 1964. Geography According to the United States Census Bureau, the city has a total area of of which is land and , or 2.22%, is water. One of the most notable geographical features in Norco, visible from anywhere in the city, are the Santa Ana Mountains. Vegetation Norco is rich in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 Northrop N-9M Crash
On April 22, 2019, a Northrop N-9MB aircraft crashed in Norco, California, United States, killing the pilot. The aircraft was the last survivor of four built and was destroyed in the crash. Investigators attributed the accident to the "pilot's loss of control", but were unable to conclusively determine a cause for the control loss, as severe impact damage to the engines, flight controls and propellers "precluded functional testing". Accident Shortly after take-off from Chino Airport, the aircraft crashed on the grounds of the California Rehabilitation Center, a state prison in Norco, California, at 12:10 pm local time. The pilot had been performing a test flight at low altitude following the completion of the aircraft's annual inspection. Ground witnesses—including at least one qualified pilot—saw the aircraft flying straight and level at what sounded like a normal cruise power setting when it pitched up into a climb, banked to the left, and then "abruptly" rolled to the ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planes Of Fame Air Museum
Planes of Fame Air Museum is an aviation museum in Chino, California,World War II Museums , Planes of Fame Air Museum, Retrieved March 5, 2011. Warbird Alley, California, Retrieved March 5, 2011. and Valle, .Planes of Fame Air Museum AviationMuseum.eu, Retrieved March ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chino, California
Chino ( ; Spanish for "Curly") is a city in the western end of San Bernardino County, California, United States, with Los Angeles County to its west and Orange County to its south in the Southern California region. Chino is adjacent to Chino Hills, California. Chino's surroundings have long been a center of agriculture and dairy farming, providing milk products in Southern California and much of the southwestern United States. Chino's agricultural history dates back to the Spanish land grant forming Rancho Santa Ana del Chino. The area specialized in fruit orchards, row crops, and dairy. Chino is bounded by Chino Hills and Los Angeles County to the west, Pomona to the northwest, unincorporated San Bernardino County (near Montclair) to the north, Ontario to the northeast, Eastvale to the southeast in Riverside County and Orange County to the southwest. It is easily accessible via the Chino Valley (71) and Pomona (60) freeways. The population was 77,983 at the 2010 cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Reversal
Control reversal is an adverse effect on the controllability of aircraft. The flight controls reverse themselves in a way that is not intuitive, so pilots may not be aware of the situation and therefore provide the wrong inputs; in order to roll to the left, for instance, they have to push the control stick to the right, the opposite of the normal direction. Causes There are several causes for this problem: pilot error, effects of high-speed flight, incorrectly connected controls, and various coupling forces on the aircraft. Equipment malfunction Equipment failure may cause flight controls to behave unexpectedly, for example the possible rudder reversal experienced onboard United Airlines Flight 585. Pilot error Pilot error is the most common cause of control reversal. In unusual attitudes it is not uncommon for the pilot to become disoriented and start feeding in incorrect control movements in order to regain level flight. This is particularly common when using helmet-mounte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
