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18th Strategic Aerospace Division
The 18th Strategic Aerospace Division is an inactive United States Air Force unit. Its last assignment was with the Fifteenth Air Force at Fairchild Air Force Base, Washington, where it was inactivated on 2 July 1968. History The 18th Composite Wing served as part of the defense force for the Hawaiian Islands from 1 May 1931 – 29 January 1942. It inactivated after suffering disastrous losses in the Japanese attack on Pearl Harbor (7 December 1941). From June 1942 until 1944, it operated as the 18th Replacement Wing, processing personnel entering Second Air Force. Redesignated as the 18th Air Division on 1 July 1959, it assured that assigned wings were organized, manned, trained, and equipped to conduct long-range bombardment operations using either nuclear or conventional weapons. The division was redesignated as 18 Strategic Aerospace Division on 15 February 1962, and also developed and maintained a strategic missile operational capability. Between 1965 and 1968, subordinate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18th Strategic Aerospace Division Crest
18 (eighteen) is the natural number following 17 (number), 17 and preceding 19 (number), 19. In mathematics * Eighteen is a composite number, its divisors being 1 (number), 1, 2 (number), 2, 3 (number), 3, 6 (number), 6 and 9 (number), 9. Three of these divisors (3, 6 and 9) add up to 18, hence 18 is a semiperfect number. Eighteen is the first inverted square-prime of the form ''p''·''q''2. * In decimal, base ten, it is a Harshad number. * It is an abundant number, as the sum of its proper divisors is greater than itself (1+2+3+6+9 = 21). It is known to be a friendly number, solitary number, despite not being coprime to this sum. * It is the number of one-sided pentominoes. * It is the only number where the sum of its written digits in base 10 (1+8 = 9) is equal to half of itself (18/2 = 9). * It is a Fine number. In science Chemistry * Eighteen is the atomic number of argon. * Group (periodic table), Group 18 of the periodic table is called the noble gases. * The 18-Electron r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
