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Jabit III
''Jabit III'' (alternately spelled ''Jabbitt III' was the name of a B-29 Superfortress (B-29-36-MO 44-27303, Victor number 71) participating in the atomic bomb attack on Hiroshima on August 6, 1945. Assigned to the 393d Bomb Squadron, 509th Composite Group, ''Jabit III'' was used as a weather reconnaissance aircraft and flew to the city of Kokura, designated as the secondary target, before the final bombing to determine if conditions were favorable for an attack. History One of 15 Silverplate B-29's used by the 509th CG, ''Jabit III'' was manufactured at the Glenn L. Martin Aircraft Plant at Omaha, Nebraska, as a block 35 Superfortress, one of 10 redesignated block 36 in recognition of its Silverplate status. It was delivered to the USAAF on April 3, 1945. Assigned to Crew B-6 (Captain John A. Wilson, Aircraft Commander), ''Jabit III'' was flown to its home base at Wendover Army Air Field, Utah, in April 1945, departing Wendover for North Field, Tinian on June 5, 1945, arrivin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing B-29-36-MO Superfortress
The Boeing B-29 Superfortress is an American four-engined Propeller (aeronautics), propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the Boeing B-17 Flying Fortress, B-17 Flying Fortress, the Superfortress was designed for high-altitude strategic bomber, strategic bombing, but also excelled in low-altitude night incendiary bombing, and in dropping naval mines to blockade Japan. B-29s dropped the atomic bombings of Hiroshima and Nagasaki, atomic bombs on Hiroshima and Nagasaki, the only aircraft ever to drop nuclear weapons in combat. One of the largest aircraft of World War II, the B-29 was designed with state-of-the-art technology, which included a cabin pressurization, pressurized cabin, dual-wheeled tricycle landing gear, and an analog computer-controlled fire-control system that allowed one gunner and a fire-control officer to direct four remote machine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Altimeter
A radar altimeter (RA), also called a radio altimeter (RALT), electronic altimeter, reflection altimeter, or low-range radio altimeter (LRRA), measures altitude above the terrain presently beneath an aircraft or spacecraft by timing how long it takes a beam of radio waves to travel to ground, reflect, and return to the craft. This type of altimeter provides the distance between the antenna and the ground directly below it, in contrast to a barometric altimeter which provides the distance above a defined vertical datum, usually mean sea level. Principle As the name implies, radar (radio detection and ranging) is the underpinning principle of the system. The system transmits radio waves down to the ground and measures the time it takes them to be reflected back up to the aircraft. The altitude above the ground is calculated from the radio waves' travel time and the speed of light. Radar altimeters required a simple system for measuring the time-of-flight that could be displayed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Individual Aircraft Of World War II
An individual is that which exists as a distinct entity. Individuality (or self-hood) is the state or quality of being an individual; particularly (in the case of humans) of being a person unique from other people and possessing one's own needs or goals, rights and responsibilities. The concept of an individual features in diverse fields, including biology, law, and philosophy. Etymology From the 15th century and earlier (and also today within the fields of statistics and metaphysics) ''individual'' meant " indivisible", typically describing any numerically singular thing, but sometimes meaning "a person". From the 17th century on, ''individual'' has indicated separateness, as in individualism. Law Although individuality and individualism are commonly considered to mature with age/time and experience/wealth, a sane adult human being is usually considered by the state as an "individual person" in law, even if the person denies individual culpability ("I followed instruct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Hampshire
New Hampshire is a U.S. state, state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec to the north. Of the 50 U.S. states, New Hampshire is the List of U.S. states and territories by area, fifth smallest by area and the List of U.S. states and territories by population, tenth least populous, with slightly more than 1.3 million residents. Concord, New Hampshire, Concord is the state capital, while Manchester, New Hampshire, Manchester is the largest city. New Hampshire's List of U.S. state mottos, motto, "Live Free or Die", reflects its role in the American Revolutionary War; its state nickname, nickname, "The Granite State", refers to its extensive granite formations and quarries. It is well known nationwide for holding New Hampshire primary, the first primary (after the Iowa caucus) in the United States presidential election ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pease Air Force Base
Pease, in Middle English, was a noun referring to the vegetable pea; see that article for its etymology. The word survives into modern English in pease pudding. Pease may also refer to: People * Pease family (Darlington), a prominent family in Darlington, UK *Al Pease (1921–2014), Formula One driver *Sir Alfred Pease, 2nd Baronet (1857–1939), English Liberal Party politician * Alfred Pease (musician) (1838–1882), composer *Arthur Pease (MP) (1837–1898), English MP *Sir Arthur Pease, 1st Baronet (1866–1927), 1st Baronet and British coal magnate and railway director * Arthur Stanley Pease (1881–1964), U.S. professor of Classics and amateur botanist *Bas Pease (1922–2004), British physicist *Bob Pease (1940–2011), analog integrated circuit design expert * Don Pease (1932–2002), U.S. Representative from Ohio * Edward Pease (other), several people * Elisha M. Pease (1812–1883), Texas governor * Francis G. Pease (1881–1938), astronomer * Frank Pease (1879 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
509th Bomb Wing
The 509th Bomb Wing (509 BW) is a United States Air Force unit assigned to the Air Force Global Strike Command, Eighth Air Force. It is stationed at Whiteman Air Force Base, Missouri. The 509 BW is the host unit at Whiteman, and operates the B-2 Spirit stealth bomber. The wing can launch combat sorties directly from Missouri to any spot on the globe, engaging adversaries with large payloads of traditional or precision-guided munitions. The wing's 509th Operations Group can trace its heritage back to the 509th Composite Group, when during WW2, two of its B-29 Superfortress bombers dropped the two atomic bombs that helped end the war in the pacific. The 509th BW led the way for America's first military response following the terrorist attacks on New York City and Washington D.C. on 11 September 2001. B-2 bombers were the first U.S. aircraft to enter Afghan airspace in October 2001, paving the way for other coalition aircraft to engage Taliban and Al Qaeda forces. During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Dynamics F-111
The General Dynamics F-111 Aardvark is a retired supersonic, medium-range, multirole combat aircraft. Production variants of the F-111 had roles that included ground attack (e.g. interdiction), strategic bombing (including nuclear weapons capabilities), reconnaissance and electronic warfare. Developed in the 1960s by General Dynamics, the F-111 entered service in 1967 with the United States Air Force (USAF). The Royal Australian Air Force (RAAF) also ordered the type and began operating the F-111C variant in 1973. The F-111 pioneered several technologies for production aircraft, including variable-sweep wings, afterburning turbofan engines, and automated terrain-following radar for low-level, high-speed flight. Its design influenced later variable-sweep wing aircraft, and some of its advanced features have since become commonplace. The F-111 suffered a variety of problems during initial development. A fighter variant, the F-111B, was not accepted for production. The F-1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urchin (detonator)
A modulated neutron initiator is a neutron source capable of producing a burst of neutrons on activation. It is a crucial part of some nuclear weapons, as its role is to "kick-start" the chain reaction at the optimal moment when the configuration is prompt critical. It is also known as an internal neutron initiator. The initiator is typically placed in the center of the plutonium pit, and is activated by impact of the converging shock wave. One of the key elements in the proper operation of a nuclear weapon is initiation of the fission chain reaction at the proper time. To obtain a significant nuclear yield, sufficient neutrons must be present within the supercritical core at the right time. If the chain reaction starts too soon (" predetonation"), the result will be only a ' fizzle yield', well below the design specification. If it occurs too late, the core will have begun to expand and disassemble into a less-dense state, leading to a lowered yield (less of the core material unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plutonium Core
The pit, named after the hard core found in fruits such as peaches and apricots, is the core of an implosion nuclear weapon – the fissile material and any neutron reflector or tamper bonded to it. Some weapons tested during the 1950s used pits made with U-235 alone, or in composite with plutonium, but all-plutonium pits are the smallest in diameter and have been the standard since the early 1960s. Pit designs Christy pits The pits of the first nuclear weapons were solid, with an ''urchin'' neutron initiator in their center. The Gadget and Fat Man used pits made of 6.2 kg of solid hot pressed plutonium-gallium alloy (at 400 °C and 200 MPa in steel dies – and ) half-spheres of diameter, with a internal cavity for the initiator. The Gadget's pit was electroplated with 0.13 mm of silver; the layer, however, developed blistering and the blisters had to be ground and plated with gold leaf before the test. The Fat Man pit, and those of subsequent models, were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osaka
is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of 2.7 million in the 2020 census, it is also the largest component of the Keihanshin Metropolitan Area, which is the second-largest metropolitan area in Japan and the 10th largest urban area in the world with more than 19 million inhabitants. Osaka was traditionally considered Japan's economic hub. By the Kofun period (300–538) it had developed into an important regional port, and in the 7th and 8th centuries, it served briefly as the imperial capital. Osaka continued to flourish during the Edo period (1603–1867) and became known as a center of Japanese culture. Following the Meiji Restoration, Osaka greatly expanded in size and underwent rapid industrialization. In 1889, Osaka was officially established as a municipality. The construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uwajima
270px, Uwajma City Hall 270px, Aerial view of Uwajma city center 270px, Japan National Route 320 in Uwajma city center is a city located in Ehime Prefecture, Japan. , the city had an estimated population of 70,440 in 35429 households and a population density of 150 persons per km². The total area of the city is . Geography Uwajima is located in southwestern Ehime Prefecture, facing the wide rias coastline and remote islands, Uwa Bay on the Seto Inland Sea to the east, and with the other three sides surrounded by mountains. Although it is actually located to the south-southeast of Yawatahama, as it is the terminus of the limited express train on the JR Shikoku Yosan Line, people other than local residents tend to think that it is the westernmost city in Ehime Prefecture. Neighbouring municipalities Ehime Prefecture * Seiyo * Kihoku * Matsuno Kōchi Prefecture * Shimanto city * Sukumo Climate Uwajima has a humid subtropical climate (Köppen climate classification ''Cfa'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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