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Taiwan,[II][k] officially the Republic of China (ROC),[I][l] is a country[27] in East Asia.[o] It is located at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. The territories controlled by the ...
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For other uses, see Arizona (disambiguation). Arizona ( / ˌærɪˈzoʊnə / ⓘ ARR-ih-ZOH-nə; Navajo: Hoozdo Hahoodzo [hoː˥z̥to˩ ha˩hoː˩tso˩]; [10] O'odham: Alĭ ṣonak [ˈaɭi̥ ˈʂɔnak]) [11] is a landlocked state in the Southwestern region of the United States.
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- Development
- Design
- Operational History
- Variants
- Specifications
- Notable Appearances in Media
- See Also
- Bibliography
- External Links
Two of the original 747-200 airframes were originally planned to be commercial airliners. When the airline did not complete the order, Boeing offered the airframes to the United States Air Force as part of a package leading to a replacement for the older EC-135J National Emergency Airborne Command Post (NEACP). Under the 481B NEACP program the Air ...
The E-4B is designed to survive an EMP with systems intact and has state-of-the-art direct fire countermeasures. Although many older aircraft have been upgraded with glass cockpits, the E-4B still uses traditional analog flight instruments, as they are less susceptible to damage from an EMPblast. The E-4B is capable of operating with a crew up to 1...
The E-4 fleet was originally deployed in 1974, when it was termed National Emergency Airborne Command Post (NEACP) (often pronounced "kneecap"). The aircraft was to provide a survivable platform to conduct war operations in the event of a nuclear attack. Early in the E-4's service, the media dubbed the aircraft as "the doomsday planes". The E-4 was...
E-4A
1. Three aircraft produced (s/n 73-1676, 73-1677, and 74-0787), powered by Pratt & Whitney JT9D-7A (first two aircraft) or General Electric CF6-50E2 (third aircraft) turbofan engines. No bulge to house equipment on top of fuselage.These were later converted to E-4Bs.
E-4B
1. One built (s/n 75-0125) and equipped with 52,500 lbf (234 kN) CF6-50E2 engines. Has nuclear electromagnetic pulseprotection, nuclear and thermal effects shielding, advanced electronics, and a wide variety of communications equipment.
Data from USAF Fact Sheet,Boeing 747-200 specifications General characteristics 1. Crew:4 2. Capacity:up to 108 mission crew 3. Length:231 ft 4 in (70.51 m) 4. Wingspan:195 ft 8 in (59.64 m) 5. Height:63 ft 5 in (19.33 m) 6. Wing area: 5,500 sq ft (510 m2) 7. Airfoil: root: BAC 463 to BAC 468 ; tip:BAC 469 to BAC 474 8. Empty weight:410,000 lb (185...
The E-4B plays a prominent role in two motion pictures. In the 1990 HBO film By Dawn's Early Light, following a nuclear strike by the Soviets, the aircraft serves as a flying platform for the presumed president, the ex–Secretary of the Interior, who is played by Darren McGavin. The aircraft is pursued by a Boeing EC-135 "Looking Glass", which succe...
Bowers, Peter M. Boeing Aircraft since 1916. London: Putnam, 1989. ISBN 0-85177-804-6.Francillon, René J. "Doomsday 747s: The National Airborne Operations Center". Air International, December 2008. Key Publishing, Syamford, Lincs, UK. pp. 32–37.Haverlah, Jeff (2005). "Nightwatch Outline". Worldwide Ute News Club (WUN). Retrieved 28 December 2013.Jenkins, Dennis R. Boeing 747-100/200/300/SP (AirlinerTech Series, Vol. 6). Specialty Press, 2000. ISBN 1-58007-026-4.E-4 product page and history page on Boeing.com178 as of March 2024 [3] Developed from. Boeing 737 Next Generation. The Boeing P-8 Poseidon is an American maritime patrol and reconnaissance aircraft developed and produced by Boeing Defense, Space & Security, and derived from the civilian Boeing 737-800. It was developed for the United States Navy (USN).
EMD E-units were a line of passenger train streamliner diesel locomotives built by the General Motors Electro-Motive Division (EMD) and its predecessor the Electro-Motive Corporation (EMC). Final assembly for all E-units was in La Grange, Illinois. Production ran from May 1937, to December, 1963.
Many climbing routes have a grade that reflects the technical difficulty—and in some cases the risks and commitment level—of the route. The first ascensionist can suggest a grade, but it will be amended to reflect the consensus view of subsequent ascents. While many countries with a strong tradition of climbing developed grading systems, a ...
