boing model 81

boing model 81 heey 1928 madhye boingne tayar kelele american prashikshan viman hote. model 81 heey model 64 chaa vikas hote. teey 125 echpi fairchild-caminez 4-cylinder radial engine yaa navyane vikasit kelelya injindware chalavale gele hote. bahutek enginanpeksha (1000 aar. pii. emm.) khoopach qamee aar. pii. emm. varr varr yaa enginesathi mothya uchch-pitch propellercha vapar karane aavashyak hote.
fairchild-caminezchya prarambhik uddan chachanyanantar, namuna 145 etch. pii. axelsion engines punha tayar karnyat aala, "model 81aii" chey punarvyakhyikaran karnyat aale aanee boing school auph aeronauticsla vitarit karnyat aale. tethe, tyache anek vela punar-engine karnyat aale, pratham 115 etch. pii. axelsion engines, "model 81 bii" chey punarnirdeshan karnyat aale. tyanantar tyala 165 echpi rait jeey-6-5, nantar 100 echpi kinner keey-5 aanee punha design keleli ubhi shepati midali. model 81 see" chey punarvyakhyayit, nantar prashikshan sevetoon kadhoon takale jaeel, excelsion engines punha engine kele jaeel aanee varg prashikshak mhanoon vaparale jaeel.
21 juuna 1928 roji, dusare model 81 tayar kele gele, jeey marylandchya anacostia yethe american naudlala 8,300 dollarmadhe denyat aale aanee "boing xn2b" chey punarvyakhyayit karnyat aale. fairchild enginechi chachani samadhankarak navhati aanee 10 janewari 1929 roji rait aeronauticalne 160 echpi rait jeey-6-5 engines tyachi punarbandhani kelee. kamgiri vadhunahi, utpadanat tyachi magani karnyat aalee nahee.

