
douglus mail plains

douglus mail plains 1920la american single-seat mail plains yokka kutumbam, veetini douglus aircraft company roopondinchi nirminchindi. 1928loe moodu enginela vimanalanu pravesapettenta varaku united states air mail servies yokka pradhana maargaalanu nadapadaniki eee vimanalanu upayoginchaaru.
abhivruddhi.
united states post office 1918 nundi air mail sevanu pradhanamgaa dii havilland dehetch. 4 bipelane yokka vaividhyaalanu upayoginchi naduputondi. 1925loe, douglus oo-2 pariseelana bipelane aadhaaramgaa pratyaamnaaya vimanam kosam daglasto aardarnu unchaalani nirnayinchukundi. company oka mail compartmentnu tayaaru cheyadaaniki mariyu pariseelakudi kakpitga unnadaaniloki pailetnu taralinchadaaniki munduku kaakpitnu cover cheyadam dwara oo-2nii savarinchindi. eee vimaanaaniki daam-1 (douglus air-mail-vann) anie paeru pettaru, ayithe idhi tvaralo m-1 gaa kudinchabadindi. m-1 pedda sankhyalo andubaatulo unna Dh. 4 vale adhe liberty injinnu upayoginchindi. prayogasaala nundi pogalanu dhooramgaa unchadaaniki exast vyavasthalo chinna maarpulu cheyabaddaayi mariyu roopakalpana vijayavantamgaa pariganinchabadindi, conny utpattini aadesinchaledu.
contract air mail (com) maargaalanu pravesapettinappudu, kottagaa erpadina westran air express company (taruvaata westran airlines) emm-2 anae paerutoe aaru mail vimanalanu arder chesindi. emm-1 nundi pradhana maarpu emitante tunnell radiator nuu frontal rakamtho bharti chesaaru. mundu kaakpitlo mail badulugaa prayaanikudini teesukelladaaniki kooda idhi nibandhananu kaligi undhi. westran air express vimananni sevaloki pravesapettadaaniki mundu (april 1926loe laas angels nundi salt lake city varaku), post office thana pradhana ruut network kosam 50 vimanalanu emm-3 gaa niyaminchaalani aadesinchindi. m-3loe m-2 nundi vivaranaatmaka thedaalu matrame unnaayi.
douglus appudu pelodunu penchadaaniki m-3nii punahroopakalpana chesindi, mariyu kotta vimananni m-4gaa niyaminchaaru. m-4kii kotta podavaina rekka undhi mariyu post office m-3la kramamlo kontha bhaganni m-4lugaa nirminchadaaniki maarchindi. oka emm-4 nuu westran air express kooda konugolu chesindi mariyu dheenini emm-4yea gaa niyaminchaaru.
1925 octoberulo com-3 (chikago-dallas) marganni jaateeya vaayu ravana samstha (nott) kuu pampinappudu, vimanayana samstha modata curtis carrier pavuranni upayoginchindi. anni margalu praiveteekarinchabadina taruvaata 1926 joolailo tapala karyalayam thana vimanalanu viraminchukunnappudu, naatlu vaelamloe padhi emm-3luu mariyu enimidi emm-4lanu konugolu chesaayi. nott itara vimanalanu konugolu chesindi mariyu oka samayamlo 24 douglus mail plainla samudaayam upayogamlo undhi. 1928 nundi konni nott emm-3 lanu podavaina rekkalatho savarinchaaru. oka m-4 nuu praat & whiteney hornet radial injinto natche tirigi injin cheyabadindi. 1928loe praarambhamaina moodu-enginela vimaanaala rakalanu pravesapettadamto, douglus mail plainlu seva nundi upasamharinchabaddaayi; konni vikrayinchabaddaayi conny chaalaa varaku raddu cheyabaddaayi.

