Kodi HTPB mu mafuta a roketi ndi chiyani?

Mafuta a roketi amagwira ntchito yofunika kwambiri pa ntchito zofufuza mlengalenga. Kwa zaka zambiri, mitundu yosiyanasiyana ya ma roketi oyendera ma roketi yapangidwa ndikuyesedwa kuti igwire bwino ntchito komanso igwire bwino ntchito. Chimodzi mwa ma roketi oyendera ndi HTPB, chomwe chimayimira hydroxyl-terminated polybutadiene. Chifukwa cha makhalidwe ake abwino, ndi mafuta omwe amagwiritsidwa ntchito kwambiri m'ma rocket motors olimba.

Mafuta a roketi a HTPB ndi chopangira mafuta chopangidwa ndi chopangira mafuta, chopangira oxidizer ndi chachitsulo chophwanyidwa. Chopangira mafuta (monga HTPB) chimagwira ntchito ngati gwero la mafuta ndipo chimapereka umphumphu wa kapangidwe ka chopangira mafuta. Chimakhala ndi polima wautali wopangidwa pochita butadiene ndi mowa, zomwe zimapatsa mphamvu zomwe zimafunika kuti hydroxyl ichotsedwe.

Chimodzi mwa zinthu zapadera za HTTPBndi mphamvu zake zambiri. Lili ndi kutentha kwakukulu kwa moto, zomwe zikutanthauza kuti limatha kutulutsa mphamvu zambiri likawotchedwa. Izi zimapangitsa kuti likhale labwino kwambiri poyendetsa roketi, chifukwa mphamvu zambiri zomwe propellant imapanga, ndizomwe zimapangitsa kuti mphamvuyo ikwaniritsidwe.

Kuphatikiza apo, HTPB siikhudzidwa kwambiri ndi kugwedezeka ndi kukangana, zomwe zimapangitsa kuti ikhale yolimba komanso yotetezeka. Kukhazikika kwake ndikofunikira kwambiri pakusungidwa ndi kunyamulidwa, ndipo moto uliwonse wangozi ukhoza kukhala ndi zotsatirapo zoopsa. Kuchepa kwa mphamvu ya HTTPBzimathandiza kuti pakhale chitetezo chapamwamba kwambiri poyerekeza ndi mitundu ina ya propellant.

Ubwino wina wa HTTPBMu mafuta a roketi muli kuthekera kwake kuponyedwa m'mawonekedwe ndi kukula kosiyanasiyana. Itha kupangidwa mosavuta kukhala tinthu tating'onoting'ono toyenera mapangidwe ndi zofunikira za roketi. Kusinthasintha kumeneku kopangira kumalola mainjiniya kusintha ma propellant kuti akonze bwino kuchuluka kwa kuyaka ndikupeza magwiridwe antchito omwe amafunidwa.

Kuwotcha HTPB mu injini ya roketi kumatulutsa mpweya wambiri komanso utsi wambiri. Utsi wopangidwa ndi ma propellant ochokera ku HTPB umachitika chifukwa cha kuyaka kosakwanira komanso kukhalapo kwa zinthu zina zolimba. Ngakhale utsi sungakhale woyenera kugwiritsidwa ntchito m'njira zina, zingakhale bwino popereka chithunzithunzi cha momwe roketiyo imayendera panthawi yowombera.

Kuphatikiza apo, HTTPBMafuta a roketi amakhala ndi kutentha kochepa. Kuchuluka kwa kutentha kumeneku kumalola kuti kugawa kwa mphamvu kuyende bwino komanso kodziwikiratu, komwe ndikofunikira kwambiri pa ntchito zomwe zimafuna kuwongolera bwino komanso kuyendetsa bwino. Mainjiniya amatha kupanga njira yolondola komanso njira yowulukira ya roketi, zomwe zimapangitsa kuti ntchito yonse ipambane.

Ngakhale mafuta a roketi a HTPB ali ndi zabwino zambiri, alinso ndi zofooka zina. Choletsa chimodzi ndi chakuti mphamvu yake yochepa kwambiri poyerekeza ndi mitundu ina ya propellant. Mphamvu yeniyeni ndi muyeso wa momwe propellant imasinthira bwino mphamvu ya mafuta kukhala mphamvu. Ngakhale HTPB imapereka mphamvu yeniyeni yabwino, pali ma propellant ena omwe angapereke mphamvu yeniyeni yapamwamba kwambiri.