Nthawi ya 11:30 pa Okutobala 19, 2021, injini ya rocket yodzipangira yokha yaku China yokhala ndi chiwopsezo chachikulu kwambiri padziko lonse lapansi, chiwopsezo chapamwamba kwambiri, komanso kugwiritsa ntchito mwaukadaulo kudayesedwa bwino ku Xi'an, kuwonetsa kuti China ikunyamula zolimba. zapindula kwambiri. Kukweza ndikofunikira kwambiri kulimbikitsa chitukuko chaukadaulo wamagalimoto akuluakulu komanso olemetsa mtsogolo.
Kukula bwino kwa ma mota olimba a rocket sikungophatikiza kulimbikira ndi nzeru za asayansi osawerengeka, komanso sikungathe kuchita popanda zopereka zazinthu zambiri zama mankhwala monga tungsten ndi zinthu za molybdenum.
Magalimoto olimba a rocket ndi mota ya rocket yamagetsi yomwe imagwiritsa ntchito zolimba zolimba. Amapangidwa makamaka ndi chipolopolo, njere, chipinda choyatsira moto, cholumikizira mphuno, ndi chipangizo choyatsira moto. Pamene propellant yatenthedwa, chipinda choyaka moto chiyenera kupirira kutentha kwakukulu kwa pafupifupi madigiri 3200 ndi kuthamanga kwakukulu kwa pafupifupi 2 × 10 ^ 7bar. Poganizira kuti ndi chimodzi mwa zigawo za mlengalenga, m'pofunika kugwiritsa ntchito zipangizo zopepuka zamphamvu zotentha kwambiri monga Made of molybdenum-based alloy kapena titaniyamu-based alloy.
Molybdenum-based alloy ndi alloy non-ferrous alloy omwe amapangidwa powonjezera zinthu zina monga titaniyamu, zirconium, hafnium, tungsten ndi ma rare earths okhala ndi molybdenum ngati matrix. Ili ndi kukana kwabwino kwambiri kwa kutentha, kuthamanga kwambiri komanso kukana dzimbiri, ndipo ndiyosavuta kuyikonza kuposa tungsten. Kulemera kwake ndi kochepa, kotero ndikoyenera kugwiritsidwa ntchito mu chipinda choyaka moto. Komabe, kukana kutentha kwambiri ndi zinthu zina za ma aloyi opangidwa ndi molybdenum nthawi zambiri sizofanana ndi ma aloyi opangidwa ndi tungsten. Chifukwa chake, mbali zina za injini ya rocket, monga zomangira zapakhosi ndi machubu oyatsira, zimafunikirabe kupangidwa ndi zida za alloy zochokera ku tungsten.
Mphuno yapakhosi ndiye khosi la khosi la rocket motor nozzle. Chifukwa cha kuuma kwa malo ogwirira ntchito, iyeneranso kukhala ndi zinthu zofanana ndi zinthu zachipinda chamafuta ndi zida zoyatsira moto. Nthawi zambiri amapangidwa ndi zinthu zophatikizika ndi mkuwa wa tungsten. Zida zamkuwa za Tungsten ndi chitsulo chozizira chodzidzimutsa, chomwe chimatha kupewa kupunduka kwa voliyumu komanso kusintha kwa magwiridwe antchito pakatentha kwambiri. Mfundo ya kuzizira kwa thukuta ndi yakuti mkuwa wa alloy udzasungunuka ndi kusungunuka pa kutentha kwakukulu, zomwe zidzatenga kutentha kwakukulu ndikuchepetsa kutentha kwa zinthuzo.
The poyatsira chubu ndi chimodzi mwa zigawo zofunika pa injini poyatsira chipangizo. Nthawi zambiri imayikidwa mu muzzle wa choyatsira moto, koma imayenera kulowa mkati mwa chipinda choyaka moto. Chifukwa chake, zida zake zodziwikiratu zimafunikira kuti zikhale ndi kukana kutentha kwambiri komanso kukana kwa ablation. Ma aloyi opangidwa ndi tungsten ali ndi zinthu zabwino kwambiri monga malo osungunuka kwambiri, mphamvu zambiri, kukana kukhudzidwa, komanso kukulitsa kwachulukidwe kocheperako, zomwe zimawapanga kukhala chimodzi mwazinthu zomwe amakonda kupanga machubu oyatsira.
Zitha kuwoneka kuti makampani a tungsten ndi molybdenum athandizira kuchita bwino kwa mayeso olimba a rocket engine! Malinga ndi Chinatungsten Online, injini yoyesererayi idapangidwa ndi Fourth Research Institute of China Aerospace Science and Technology Corporation. M'lifupi mwake ndi 3.5 metres ndi kukankha kwa matani 500. Ndi umisiri wotsogola wambiri monga ma nozzles, magwiridwe antchito onse ainjini afika pamlingo wotsogola padziko lonse lapansi.
Ndikoyenera kutchula kuti chaka chino dziko la China lachita maulendo awiri oyendetsa ndege. Ndiye kuti, nthawi ya 9:22 pa Juni 17, 2021, roketi yonyamula ya Long March 2F yonyamula chombo cha Shenzhou 12 chopangidwa ndi anthu chinayambitsidwa. Nie Haisheng, Liu Boming, ndi Liu Boming adakhazikitsidwa bwino. Tang Hongbo anatumiza amlengalenga atatu mumlengalenga; nthawi ya 0:23 pa Okutobala 16, 2021, roketi yonyamulira ya Long March 2 F Yao 13 yonyamula chombo chonyamula anthu cha Shenzhou 13 idayambitsidwa ndikunyamula Zhai Zhigang, Wang Yaping, ndi Ye Guangfu kupita mumlengalenga. Kutumizidwa mumlengalenga.