Kusukela ohlwini lwezigaba kuya phansi izinto ezisetshenziselwa ukulungisa i-boomerang. Bhala imiphumela ngezimpawu ezihlukaniswe ngamakhoma.
Context:I-boomerang iyinduku yokuphonsa enezakhiwo ze-aerodynamic, ngokwemvelo eyenziwe ngokhuni, kodwa futhi eyenziwe ngamathambo, uphondo, amazinyo ngisho nensimbi. Ama-boomerang anamuhla asetshenziselwa ezemidlalo angase enziwe nge-plywood noma ngamapulasitiki anjenge-ABS, i-polypropylene, iphepha le-phenolic, noma amapulasitiki aqiniswe nge-carbon fiber.  Ama-boomerang anezimo nobukhulu obuhlukahlukene kuye ngokuthi asuka kuphi noma asuselwa kusiphi isizwe nokuthi ahloselwe ukwenzani. Abantu abaningi bacabanga ngohlobo lwendabuko lwase-Australia kuphela, nakuba namuhla kunezinhlobo eziningi zama-boomerang asebenziseka kalula, njengesiqephu esiphambanweni, i-pinwheel, i-tumble-stick, i-Boomabird, nezinye izinhlobo eziningi ezingavamile.  Kufanele kwenziwe umehluko obalulekile phakathi kwama-boomerang abuyayo nama-boomerang angabuyi:  Ama-boomerang abuyayo ayandiza, futhi ayizibonelo zokuqala zokundiza kwabantu okwakunzima kunomoya. I - boomerang ebuyayo inamaphiko amabili noma ngaphezulu ahlelwe ngendlela yokuthi lapho ijikeleza idala amandla angalingani emkhathini ahlanekezela indlela yayo ibe yi - ellipse, ibuyele endaweni yayo lapho iphonswe kahle. Ukuma kwawo okuvamile okungu-L kuwenza abe uhlobo olwaziwa kakhulu lwe-boomerang. Nakuba asetshenziselwa ukuzilibazisa noma ukuzilibazisa, ama-boomerang abuyayo asetshenziselwa nokuyenga izinyoni ezidla ezinye, aphonswe phezu kotshani obude ukuze asabise izinyoni ezidla inyamazane ukuba zibaleke futhi zingene emanetheni alindile. Ama-boomerang okuncintisana angewona awendabuko, anamuhla eza ngezindlela eziningi, ngobukhulu nangezinto zokwakha. Ama-boomerang angabuyi, izinduku zokuphonsa, ama-valari, noma ama-kylies, asetshenziswa ngokuyinhloko njengezikhali. Azinazo izingxenye ze-aeroproil, ngokuvamile zinzima futhi zenzelwe ukuhamba ngokuqondile nangamandla ngangokunokwenzeka ukuze zifinyelele ekuhlosweni ukuwisa umdlalo. Uhlobo lweTamil valari, lwemvelaphi yasendulo futhi okukhulunywa ngalo ezincwadini zeTamil Sangam "Purananuru", lwalungolunye lwalezi. Uhlobo olujwayelekile lweValari luyizingalo ezimbili ezibekwe nge-angle; enye inciphile futhi iyagoba, enye iyisiyingi njengesibambo. Nakuba ama-valaris eza ngezindlela eziningi nobukhulu, ngokuvamile enziwa ngensimbi ephonswe esikhwameni. Nokho, ezinye zingase zibe nemilenze yokhuni enezihloko zensimbi noma ezinemiphetho ebukhali ebulalayo noma ngemimese ekhethekile enemiphetho emibili ebukhali njengensingo eyaziwa ngokuthi i-kattari.
ukhuni, ithambo, uphondo, amazinyo, insimbi, i-plywood, amapulasitiki afana ne-ABS, i-polypropylene, iphepha le-phenolic, amapulasitiki aqiniswe nge-carbon fiber