Ka 11:30 ka la 19 Mphalane, 2021, enjine ea rocket ea China e iketselitseng monolithic e matla ka ho fetesisa e nang le sekhahla se seholo ka ho fetesisa, se phahameng ka ho fetesisa ho isa ho bongata, le ts'ebeliso ea boenjiniere e ile ea lekoa ka katleho Xi'an, ho tšoaea hore China e na le matla a ho jara. e fihletsoe haholo. Ho ntlafatsa ho bohlokoa haholo ho nts'etsapele nts'etsopele ea theknoloji ea likoloi tse kholo le tse boima nakong e tlang.
Tsoelo-pele e atlehileng ea li-rocket motors tse tiileng ha e kenye feela mosebetsi o boima le bohlale ba bo-rasaense ba se nang palo, empa hape e ke ke ea etsa ntle le menehelo ea lisebelisoa tse ngata tsa lik'hemik'hale tse kang tungsten le lihlahisoa tsa molybdenum.
Enjene ea rocket e tiileng ke enjene ea rocket ea lik'hemik'hale e sebelisang propellant e tiileng. Haholo-holo e entsoe ka khetla, lijo-thollo, kamore e tukang, kopano ea nozzle, le sesebelisoa sa ho tima. Ha propellant e chesoa, kamore e tukang e tlameha ho mamella mocheso o phahameng oa likhato tse ka bang 3200 le khatello e phahameng ea hoo e ka bang 2 × 10 ^ 7bar. Ha ho nahanoa hore ke e 'ngoe ea likarolo tsa sepakapaka, hoa hlokahala ho sebelisa lisebelisoa tsa alloy tse bobebe tse matla haholo tse kang Made of molybdenum-based alloy kapa alloy e thehiloeng ho titanium.
Alloy e thehiloeng ho molybdenum ke motsoako o se nang ferrous o entsoeng ka ho eketsa likarolo tse ling tse kang titanium, zirconium, hafnium, tungsten le lefats'e le sa tloaelehang le nang le molybdenum e le matrix. E na le ho hanyetsa mocheso o phahameng haholo, ho hanyetsa khatello e phahameng le ho hanyetsa kutu, 'me ho bonolo ho sebetsa ho feta tungsten. Boima bo nyane, kahoo bo loketse ho sebelisoa ka kamoreng ea mollo. Leha ho le joalo, ho hanyetsa mocheso o phahameng le lisebelisoa tse ling tsa li-alloys tse thehiloeng molybdenum hangata ha li ntle joaloka li-alloys tse thehiloeng ho tungsten. Ka hona, likarolo tse ling tsa enjene ea rokete, joalo ka liner'a 'metso le li-tubes tsa mollo, li ntse li hloka ho hlahisoa ka lisebelisoa tsa alloy tse thehiloeng ho tungsten.
Lesela la 'metso ke lesela la 'metso la nozzle e tiileng ea rocket motor. Ka lebaka la tikoloho e thata ea ho sebetsa, e boetse e lokela ho ba le thepa e ts'oanang le lisebelisoa tsa kamore ea mafura le thepa ea ho futhumatsa. Hangata e entsoe ka thepa e entsoeng ka koporo ea tungsten. Lisebelisoa tsa koporo tsa Tungsten ke lisebelisoa tsa tšepe tse pholileng tsa mofufutso tse itlelang feela, tse ka qobang deformation ea molumo le liphetoho tsa ts'ebetso ka mocheso o phahameng. Molao-motheo oa ho pholisa mofufutso ke hore koporo e ka har'a motsoako e tla qhibiliha ebe e fetoha mouoane ka mocheso o phahameng, o tla amohela mocheso o mongata le ho fokotsa mocheso oa holim'a thepa.
The ignition tube ke e 'ngoe ea likarolo tsa bohlokoa tsa sesebelisoa sa ho khantša enjene. Hangata e kenngoa molomong oa mollo oa mollo, empa e hloka ho kena ka hare ho kamore ea mollo. Ka hona, lisebelisoa tsa eona tsa motheo li hlokahala ho ba le khanyetso e phahameng ea mocheso le ho hanyetsa ablation. Li-alloys tse thehiloeng ho Tungsten li na le thepa e ntle haholo joalo ka sebaka se phahameng sa ho qhibiliha, matla a phahameng, ho hanyetsa tšusumetso, le coefficient ea katoloso ea molumo o tlase, e leng se etsang hore e be e 'ngoe ea lisebelisoa tse ratoang bakeng sa ho etsa li-tubes tsa mollo.
Hoa bonahala hore indasteri ea tungsten le molybdenum e kentse letsoho katlehong ea tlhahlobo e tiileng ea enjine ea rokete! Ho ea ka Chinatungsten Online, enjene ea tlhahlobo ena e ile ea hlahisoa ke Setsi sa Bone sa Lipatlisiso sa China Aerospace Science and Technology Corporation. E na le bophara ba limithara tse 3.5 le ho phunyeletsa lithane tse 500. Ka mekhoa e mengata ea morao-rao e kang li-nozzles, ts'ebetso ea kakaretso ea enjene e fihlile boemong bo ka sehloohong lefatšeng.
Ho bohlokoa ho bolela hore selemong sena China e entse lithunya tse peli tsa sepaka-paka tse entsoeng ke motho. Ke hore, ka 9:22 ka la 17 Phuptjane, 2021, ho ile ha thakholoa rokete e tsamaisang thepa ea Long March 2F e nkileng sefofa-sebakeng sa Shenzhou 12. Nie Haisheng, Liu Boming, le Liu Boming li ile tsa thakholoa ka katleho. Tang Hongbo o ile a romela borasefofane ba bararo sebakeng; ka 0:23 ka la 16 Mphalane, 2021, rokete ea sejari ea Long March 2 F Yao 13 e nkileng sefofa-sebakeng se tsamaisoang ke motho ea Shenzhou 13 e ile ea thakholoa ’me ea atleha ho isa Zhai Zhigang, Wang Yaping, le Ye Guangfu sebakeng ka katleho. E rometsoe sebakeng.