Menene saurin dawowa
 

Fastback wani nau'in abin hawa ne mai rufi wanda ke gangarowa gaba daga gaban sashin fasinjoji zuwa bayan motar. Yayinda rufin ke motsawa zuwa baya, yana matsawa kusa da asalin abin hawa. A wutsiyar motar, saurin gudu ko dai zai lanƙwasa kai tsaye zuwa ƙasa ko ya fadi kwatsam. Yawancin lokaci ana amfani da ƙira don ƙarancin yanayin aerodynamic ɗinsa. Ana iya amfani da kalmar don bayyana ko dai zane ko motar da aka tsara ta wannan hanyar. 

Gangar bugun baya na iya zama mai lankwasa ko madaidaiciya, dangane da fifikon masana'antar. Hannun karkatar, duk da haka, ya bambanta daga abin hawa zuwa abin hawa. Yayinda wasu daga cikinsu suke da wata karamar kusurwa ta kusurwa, wasu kuma suna da bayyananniyar zuriya. Hannun karkatar da sauri baya tabbata, yana da sauƙi don ƙayyade rashi kinks. 

Menene saurin dawowa

Duk da yake har yanzu ba a cimma matsaya a kan wanda ya fara amfani da jikin mota mai sauri ba, wasu sun ce Stout Scarab, da aka ƙaddamar a cikin 1930s, na iya kasancewa ɗayan motocin farko da suka yi amfani da wannan ƙirar. Hakanan ana ɗaukar karamar motar farko a duniya, Stout Scarab tana da rufin da ya faɗi a hankali sannan kuma a kaifi a bayansa, yayi kama da siffar hawaye.

Sauran masu kera motoci daga baya sun lura kuma suka fara amfani da irin wadannan zane-zanen kafin su gano madaidaiciyar karkatar da dalilan aerodynamic. 

 

Ofaya daga cikin fa'idodi na ƙirar sauri shine ƙarancin kayan aikin iska idan aka kwatanta da sauran tsarin jikin mota. Kamar yadda kowane abin hawa ke tafiya ta cikin matsalolin da ba a iya gani ba kamar guguwar iska, wani ƙarfin adawa da ake kira ja zai bunkasa yayin da abin hawa ke ƙaruwa. A wata ma'anar, motar da ke motsawa ta cikin iska ta gamu da juriya wanda ke rage saurin motar kuma yana daɗa fifiko ma'ana matsin lamba, saboda yadda iska ke zagaye abin hawa yayin da take gudana akanta. 

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Menene saurin dawowa

Motocin Fastback suna da rarar jan kafa mai yawa, wanda ke basu damar isa zuwa saurin gudu da tattalin arzikin mai tare da ƙarfi iri iri da mai kamar yawancin sauran motocin. Dragaramin jan coefficient ya sanya wannan ƙirar ta dace da wasanni da motocin tsere. 

Hatchbacks da fastbacks galibi suna rikicewa. A hatchback kalma ce ta mota tare da gilashin baya na baya da wutsiya, ko rufin rana, waɗanda ke haɗuwa da juna kuma suke aiki a matsayin naúrar. Akwai lokuta da yawa a saman rufin gilashin baya wanda ya daga rufin rana da taga sama. Da yawa, kodayake ba duka bane, azumin baya yana amfani da ƙirar hatchback. A mayar da baya na iya zama hatchback da kuma akasin haka.

 
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