Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Muna 1963, United States Air Force yakatanga nhevedzano yemapurojekiti okudzidza pamusoro pengarava huru zvikuru yokufambisa. Kunyange zvazvo C-141 Starlifter yakanga ichiunzwa, vakuru vakuru vaidavira kuti ndege yakakura zvikuru uye inokwanisa zvikuru yaidiwa, zvikurukuru kutakura mitoro yaisazokwana mundege ipi neipi iripo. Zvidzidzo izvi zvakatungamirira kutanga zvinodiwa kuti CX-Heavy Logistics System (CX-HLS) muna March 1964 kuti ndege ane mutoro kukwanisa 180,000 nepondo (81,600 kg) uye kumhanya Mach 0.75 (500 mph kana 800 km / h), uye unrefueled siyana 5,000 nautical makiromita (9,300 km) ane payload pamusoro 115,000 nepondo (52,200 kg). Nzvimbo yokuisa zvinhu yaifanira kuva yakafara mamita 5,18 uye yakareba mamita 30, uye yaiva nemasuo aiva nechemberi nekumashure. Kuda kuti injini dzirambe dziri ina kwaida kuti injini itsva dzigadzirwe dziine simba rakawanda uye dzichishandisa mafuta mashoma. Muna May 1964, airframe zvikumbiro akasvika kubva Boeing, Douglas, General Dynamics, Lockheed, uye Martin Marietta; injini zvikumbiro vakanga pasi ne General Electric, Curtiss-Wright, uye Pratt & Whitney. Boeing, Douglas, uye Lockheed vakapiwa mamwe makondirakiti ezvidzidzo zvemuviri wendege, pamwe chete neGeneral Electric uye Pratt & Whitney enjini. Zvikumbiro zvefemu yendege zvakagovana zvinhu zvinoverengeka. Sezvo CX-HLS yaifanira kukwanisa kutakurwa kubva mberi, musuo waifanira kuiswa apo kabhini yaiwanzova. Makambani ose akagadzirisa chinetso ichi nokufambisa cockpit pamusoro penzvimbo yekutakura zvinhu; Douglas aiva ne "pod" duku mberi uye pamusoro pemapapiro, Lockheed akashandisa "musana" wakareba uchimhanya urefu hwendege nemapapiro emapapiro achipfuura nawo, apo Boeing akabatanidza maviri, ane pod yakareba yakabva kumashure kwemhino kusvika kumashure kwemapapiro. Muna 1965, Lockheed ndege magadzirirwo uye General Electric injini magadzirirwo vakasarudzwa itsva C-5 Galaxy chokufambisa, raiva guru muchiuto ndege munyika panguva. Musuo wepamberi nepfungwa dzakakwidzwa dzedumba rokutarisira dzaizoendeswa ku...  Mubvunzo: Ndiani aifanira kuongorora nhengo dzendege?
Boeing, Douglas, uye Lockheed