|
Lockheed P-7
The Lockheed P-7 was a four turboprop-engined patrol aircraft ordered by the U.S. Navy as a replacement for the P-3 Orion. The external configuration of the aircraft was to be very similar to that of the P-3. Development had not progressed very much before the program was cancelled in July 1990. Development In the mid-1980s, the U.S. Navy made plans to replace the large number of Lockheed P-3 aircraft which would reach the end of their useful service lives during the 1990s. To limit costs the U.S. Navy envisioned a modified P-3 with increased payload and updated avionics. This aircraft became known as the "P-3G" of which 125 should be procured over a period of five years up to 2001. However, the U.S. Navy was unwilling to select Lockheed's P-3G without any competition and issued the final "Request for Proposals (RFP)" in January 1987. For the airplane named the P-7A "LRAACA" (Long-Range Air ASW-Capable Aircraft), Lockheed's competitors were: * Boeing - proposal using a modifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maritime Patrol Aircraft
A maritime patrol aircraft (MPA), also known as a patrol aircraft, maritime reconnaissance aircraft, maritime surveillance aircraft, or by the older American term patrol bomber, is a fixed-wing aircraft designed to operate for long durations over water in maritime patrol roles — in particular anti-submarine warfare (ASW), anti-surface warfare, anti-ship warfare (AShW), and search and rescue (SAR). In addition to dedicated airframes, mid-size and large business jets have been modified for MPA missions, offering rapid deployment, extended range, long endurance, and lower life-cycle costs. Among other maritime surveillance resources, such as satellites, ships, unmanned aerial vehicles (UAVs) and helicopters, the MPA is an important asset. To perform ASW operations, MPAs typically carry air-deployable Sonobuoy, sonar buoys as well as torpedoes and are usually capable of extended flight at low altitudes. History First World War The first aircraft that would now be identified as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Warning Receiver
Radar warning receiver (RWR) systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected, like a fighter aircraft's fire control radar. The warning can then be used, manually or automatically, to evade the detected threat. RWR systems can be installed in all kind of airborne, sea-based, and ground-based assets such as aircraft, ships, automobiles, military bases. Depending on the market the RWR system is designed for, it can be as simple as detecting the presence of energy in a specific radar band, such as the frequencies of known surface-to-air missile systems. Modern RWR systems are often capable of classifying the source of the radar by the signal's strength, phase and signal details. The information about the signal's strength and waveform can then be used to estimate the type of threat the detected radar poses. Description The RWR usually has a visual display somewhere prominent in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Low-wing Aircraft
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplane (aeronautics), multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing configuration and is the simplest to build. However, during the early years of flight, these advantages were offset by its greater weight and lower manoeuvrability, making it relatively rare until the 1930s. Since then, the monoplane has been the most common form for a fixed-wing aircraft. Characteristics Support and weight The inherent efficiency of the monoplane is best achieved in the cantilever wing, which carries all structural forces internally. However, to fly at practical speeds the wing must be made thin, which requires a heavy structure to make it strong and stiff enough. External Bracing (aeronautics), bracing can be used to improve structural efficiency, reducing weight and cost. For a wing of a given size, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancelled Military Aircraft Projects Of The United States
Cancel, cancellation, or cancelled may refer to: Business *Project cancellation, in government and industry *Cancellation (mail), a postal marking applied to a stamp or stationery indicating the item has been used *Cancellation (insurance), the termination of an insurance policy *Flight cancellation and delay, not operating a scheduled flight Sociology *Cancel culture, boycotting and ostracism calling out offensive behavior on social media or in real life Technology and science *Cancel leaf, a bibliographic term for replaced leaves in printed books *Cancellation property, the mathematical property if ''a''×''b'' = ''a''×''c'' then ''b'' = ''c'' ** Cancelling out, a technique for simplifying mathematical expressions *Catastrophic cancellation, numerical error arising from subtracting approximations to nearby numbers * Noise cancellation, a method for reducing unwanted sound *Phase cancellation, the effect of two waves that are out of phase with each other being summed *Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Aircraft
Lockheed (originally spelled Loughead) may refer to: Brands and enterprises * Lockheed Corporation, a former American aircraft manufacturer * Lockheed Martin, formed in 1995 by the merger of Lockheed Corporation and Martin Marietta ** Lockheed Martin Aeronautics ** Lockheed Martin Space Systems * Lockheed Shipbuilding and Construction Company People * Flora Haines Loughead (1855-1943), American writer, farmer, miner * The brothers who founded the original Lockheed Corporation: ** Allan Loughead (1889–1969), American aviation pioneer ** Malcolm Loughead, American aviation pioneer Other uses * Lockheed (comics) Lockheed is a fictional character appearing in American comic books published by Marvel Comics. The character appears most commonly in association with the X-Men. He is an Extraterrestrial life, alien dragon and the longtime companion of Kitty Pry ..., a Marvel Comics character * Lockheed Martin Transit Center, in Sunnyvale, California See also * Lochhead, a surna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States House Of Representatives
The United States House of Representatives is a chamber of the Bicameralism, bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Article One of the United States Constitution, Article One of the Constitution of the United States, U.S. Constitution to pass or defeat federal legislation, known as Bill (United States Congress), bills. Those that are also passed by the Senate are sent to President of the United States, the president for signature or veto. The House's exclusive powers include initiating all revenue bills, Impeachment in the United States, impeaching federal officers, and Contingent election, electing the president if no candidate receives a majority of votes in the United States Electoral College, Electoral College. Members of the House serve a Fixed-term election, fixed term of two years, with each seat up for election before the start of the next Congress. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howard L
Howard is a masculine given name derived from the English surname Howard. ''The Oxford Dictionary of English Christian Names'' notes that "the use of this surname as a christian name is quite recent and there seems to be no particular reason for it except that it is the name of several noble families". The surname has a number of possible origins; in the case of the noble family, the likely source is the Norse given name Hávarðr, composed of the elements ''há'' ("high") and ''varðr'' ("guardian"). Diminutives include Howie and Ward. Howard reached peak popularity in the United States in the 1920s, when it ranked as the 26th most popular boys' name. As of 2018, it had fallen to 968th place. People with the given name * Howard Allen (1949–2020), American serial killer * Howard Duane Allman (1946–1971), American guitar virtuoso * Howard Anderson (other), name of several people * Howard Andrew (1934–2021), American poker player * Howard Ashman (1950–1991), Ame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States General Accounting Office
The United States Government Accountability Office (GAO) is an independent, nonpartisan government agency within the legislative branch that provides auditing, evaluative, and investigative services for the United States Congress. It is the supreme audit institution of the federal government of the United States. It identifies its core "mission values" as: accountability, integrity, and reliability. It is also known as the "congressional watchdog". The agency is headed by the Comptroller General of the United States. The comptroller general is appointed by the president with the advice and consent of the Senate. When a vacancy occurs in the office of the comptroller general, Congress establishes a commission to recommend individuals to the president. The commission consists of the following: *the speaker of the United States House of Representatives *the president pro tempore of the United States Senate *the majority and minority leaders of the House of Representatives and the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McDonnell Douglas P-9
The McDonnell Douglas MD-94X was a planned propfan-powered airliner, intended to begin production in 1994. Announced in January 1986, the aircraft was to seat between 160 and 180 passengers, possibly using a twin-aisle configuration. An all-new design that was investigated internally since at least 1984, the MD-94X was developed in the mid-1980s to compete with the similar Boeing 7J7. The price of oil would have to be at least US$1.40 per gallon for McDonnell Douglas to build the plane, though. Configuration was similar to the MD-80, but advanced technologies such as canard noseplanes, laminar and turbulent boundary layer control, side-stick flight control (via fiber optics), and aluminum-lithium alloy construction were under consideration. Airline interest in the brand-new propfan technology was weak despite claims of up to a 60% reduction in fuel use, and both aircraft were canceled. Under development at the same time were two propfan-powered commercial variants of the MD-80. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kawasaki P-1
The Kawasaki P-1, previously P-X, XP-1, is a Japanese maritime patrol aircraft developed and manufactured by Kawasaki Aerospace Company. Unlike many maritime patrol aircraft, which are typically conversions of civilian designs, the P-1 is a purpose-built maritime aircraft with no civil counterpart and was designed from the onset for the role. It has the distinction of being the first operational aircraft in the world to make use of a fly-by-optics control system. The P-1 has entered service with the Japan Maritime Self-Defense Force (JMSDF) as a replacement for the Lockheed P-3, P-3C Orion. In March 2013, the JMSDF took delivery of the first two operational P-1 aircraft. Export customers are also being sought for the type as part of a general loosening of Japanese Japanese arms-export ban, military export restrictions. Development Observing that its fleet of P-3C Orion, P-3C aircraft had been in service for some time, the JMSDF began searching for a replacement maritime patrol a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing P-8 Poseidon
The Boeing P-8 Poseidon is an American maritime patrol and reconnaissance aircraft developed and produced by Boeing Defense, Space & Security. It was developed for the United States Navy as a derivative of the civilian Boeing 737 Next Generation airliner. The P-8 operates in anti-submarine warfare (ASW), anti-surface warfare (ASUW), and intelligence, surveillance and reconnaissance (ISR) roles. It is armed with torpedoes, Harpoon anti-ship missiles, and other weapons, can drop and monitor sonobuoys, and can operate in conjunction with other assets, including the Northrop Grumman MQ-4C Triton maritime surveillance unmanned aerial vehicle (UAV). In addition to the U.S. Navy, the P-8 is also operated by the Indian Navy, the Royal Australian Air Force, the United Kingdom's Royal Air Force, the Royal Norwegian Air Force and the Royal New Zealand Air Force. It also has been ordered by the Republic of Korea Navy, the German Navy and the Royal Canadian Air Force. Development Origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
