Thaum 11:30 teev sawv ntxov rau lub Kaum Hli 19, 2021, Tuam Tshoj lub cav foob pob hluav taws uas tsim los ntawm nws tus kheej nrog lub zog loj tshaj plaws hauv ntiaj teb, qhov sib piv ntawm lub zog siab tshaj plaws rau pawg neeg, thiab kev siv tau raug sim ua tiav hauv Xi'an, qhia tias Tuam Tshoj lub peev xwm nqa khoom khov kho tau ua tiav zoo heev. Kev txhim kho yog qhov tseem ceeb heev rau kev txhawb nqa kev tsim cov thev naus laus zis loj thiab hnyav hauv lub neej yav tom ntej.
Kev txhim kho zoo ntawm cov cav fais fab khov kho tsis yog tsuas yog ua rau muaj kev ua haujlwm nyuaj thiab kev txawj ntse ntawm ntau tus kws tshawb fawb xwb, tab sis kuj tsis tuaj yeem ua yam tsis muaj kev koom tes ntawm ntau cov ntaub ntawv tshuaj xws li tungsten thiab molybdenum cov khoom.
Lub cav foob pob hluav taws khov kho yog lub cav foob pob hluav taws uas siv cov khoom siv roj khov kho. Nws feem ntau yog tsim los ntawm lub plhaub, cov noob, lub chamber hlawv, lub nozzle sib dhos, thiab lub cuab yeej hluav taws. Thaum lub roj hlawv, lub chamber hlawv yuav tsum tiv taus qhov kub siab txog li 3200 degrees thiab qhov siab siab txog li 2 × 10 ^ 7bar. Xav txog tias nws yog ib qho ntawm cov khoom siv ntawm lub dav hlau, nws yog qhov tsim nyog los siv cov khoom siv sib xyaw ua ke kub thiab muaj zog xws li ua los ntawm molybdenum-based alloy lossis titanium-based alloy.
Cov hlau ua los ntawm molybdenum yog cov hlau tsis yog ferrous uas tsim los ntawm kev ntxiv lwm yam xws li titanium, zirconium, hafnium, tungsten thiab cov av tsis tshua muaj nrog molybdenum ua lub matrix. Nws muaj kev tiv taus kub zoo heev, kev tiv taus siab thiab kev tiv taus corrosion, thiab yooj yim dua rau kev ua dua li tungsten. Qhov hnyav me dua, yog li nws tsim nyog siv rau hauv chav combustion. Txawm li cas los xij, kev tiv taus kub siab thiab lwm yam khoom ntawm cov hlau ua los ntawm molybdenum feem ntau tsis zoo li cov hlau ua los ntawm tungsten. Yog li ntawd, qee qhov ntawm lub cav rocket, xws li lub caj pas thiab cov raj hluav taws xob, tseem yuav tsum tau tsim nrog cov khoom siv hlau ua los ntawm tungsten.
Lub caj pas yog cov khoom siv sab hauv rau lub caj pas ntawm lub cav rocket khov kho. Vim yog qhov chaw ua haujlwm hnyav, nws kuj yuav tsum muaj cov khoom zoo ib yam li cov khoom siv roj chamber thiab cov khoom siv lub raj xa hluav taws xob. Nws feem ntau yog ua los ntawm cov khoom siv sib xyaw ua ke ntawm tungsten tooj liab. Cov khoom siv tooj liab tungsten yog cov khoom siv hlau uas ua kom txias hws, uas tuaj yeem tiv thaiv kev hloov pauv ntawm qhov ntim thiab kev ua haujlwm ntawm qhov kub siab. Lub hauv paus ntsiab lus ntawm kev txias hws yog tias tooj liab hauv cov hlau yuav ua kua thiab ua pa ntawm qhov kub siab, uas tom qab ntawd yuav nqus tau ntau cua sov thiab txo qhov kub ntawm cov khoom siv.
Lub raj xa hluav taws yog ib qho tseem ceeb ntawm lub cav hluav taws. Feem ntau nws tau teeb tsa rau hauv lub qhov ntawm lub tshuab hluav taws, tab sis yuav tsum mus tob rau hauv chav hlawv. Yog li ntawd, nws cov khoom siv yuav tsum muaj kev tiv taus kub thiab tiv taus ablation zoo heev. Cov hlau tungsten-based muaj cov yam ntxwv zoo xws li qhov chaw yaj siab, lub zog siab, kev cuam tshuam tsis kam, thiab cov coefficient nthuav dav tsawg, ua rau lawv yog ib qho ntawm cov khoom siv nyiam rau kev tsim cov raj xa hluav taws.
Pom tau tias kev lag luam tungsten thiab molybdenum tau pab txhawb rau kev ua tiav ntawm kev sim lub cav foob pob hluav taws! Raws li Chinatungsten Online, lub cav rau qhov kev sim no tau tsim los ntawm Lub Tsev Kawm Ntawv Tshawb Fawb Thib Plaub ntawm Tuam Tshoj Aerospace Science thiab Technology Corporation. Nws muaj lub cheeb ntawm 3.5 meters thiab lub zog ntawm 500 tons. Nrog ntau yam thev naus laus zis siab heev xws li nozzles, qhov kev ua tau zoo tag nrho ntawm lub cav tau mus txog qib siab tshaj plaws hauv ntiaj teb.
Nws tsim nyog hais tias xyoo no Tuam Tshoj tau ua ob lub dav hlau uas muaj neeg caij. Ntawd yog, thaum 9:22 thaum Lub Rau Hli 17, 2021, lub foob pob hluav taws Long March 2F uas nqa lub dav hlau Shenzhou 12 uas muaj neeg caij tau raug tso tawm. Nie Haisheng, Liu Boming, thiab Liu Boming tau raug tso tawm zoo. Tang Hongbo tau xa peb tus neeg caij mus rau hauv qhov chaw; thaum 0:23 thaum Lub Kaum Hli 16, 2021, lub foob pob hluav taws Long March 2 F Yao 13 uas nqa lub dav hlau Shenzhou 13 uas muaj neeg caij tau raug tso tawm thiab tau nqa Zhai Zhigang, Wang Yaping, thiab Ye Guangfu mus rau hauv qhov chaw. Xa mus rau hauv qhov chaw.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-19-2021