Roj foob pob hluav taws ua lub luag haujlwm tseem ceeb hauv kev tshawb nrhiav chaw ua haujlwm. Tau ntau xyoo, ntau hom foob pob hluav taws xob tau tsim thiab sim ua kom tau txais txiaj ntsig zoo thiab ua haujlwm tau zoo. Ib qho kev tiv thaiv zoo li no yog HTPB, uas sawv cev rau hydroxyl-terminated polybutadiene. Vim nws cov khoom zoo heev, nws yog ib qho siv roj ntau hauv cov khoom siv foob pob hluav taws.
HTPB foob pob hluav taws roj yog cov khoom sib xyaw ua ke ntawm cov ntawv khi, oxidizer thiab hmoov hlau roj. Lub binder (piv txwv li HTPB) ua raws li cov khoom siv roj thiab muab cov qauv kev ncaj ncees rau lub tshuab hluav taws xob. Nws muaj cov saw hlau ntev ntev ua los ntawm reacting butadiene nrog cawv, muab cov khoom uas xav tau hydroxyl-terminated.
Ib tug tshwj xeeb nta ntawmHTPB yog nws cov ntsiab lus siab zog. Nws muaj qhov kub siab ntawm combustion, uas txhais tau hais tias nws tuaj yeem tso tawm ntau lub zog thaum hlawv. Qhov no ua rau nws zoo tagnrho rau foob pob ua ntxaij propulsion, raws li lub zog ntau lub propellant generates, qhov siab dua qhov thrust uas tuaj yeem ua tiav.
Tsis tas li ntawd, HTPB tsis tshua muaj kev cuam tshuam rau kev poob siab thiab kev sib txhuam, ua rau nws ruaj khov thiab muaj kev nyab xeeb. Nws qhov ruaj khov yog qhov tseem ceeb thaum lub sijhawm khaws cia thiab kev thauj mus los, thiab txhua qhov hluav taws kub tsis sib xws tuaj yeem ua rau muaj kev puas tsuaj loj. Qhov qis rhiab heev ntawmHTPBtso cai rau kom muaj kev nyab xeeb ntawm kev ua haujlwm siab dua piv rau lwm hom propellant.
Lwm qhov zoo ntawmHTPB nyob rau hauv foob pob hluav taws roj yog nws lub peev xwm los cam khwb cia rau hauv cov duab sib txawv thiab ntau thiab tsawg. Nws tuaj yeem ua tau yooj yim molded rau hauv particle geometries haum rau cov foob pob hluav taws tshwj xeeb tsim thiab xav tau. Qhov kev tsim khoom yooj yim no tso cai rau cov kws ua haujlwm tsim cov khoom siv hluav taws xob kom ua kom zoo dua cov nqi hluav taws xob thiab ua tiav cov yam ntxwv xav tau.
Hlawv HTPB hauv lub tshuab foob pob hluav taws ua rau muaj roj ntau thiab cov pa luam yeeb loj. Cov pa luam yeeb uas tsim los ntawm HTPB-raws li propellants yog qhov tshwm sim ntawm kev sib txuas tsis tiav thiab muaj qee cov khoom seem. Txawm hais tias cov pa luam yeeb yuav tsis zoo rau qee qhov kev siv, nws yuav muaj txiaj ntsig zoo hauv kev muab kev pom ntawm lub foob pob hluav taws txoj hauv kev thaum lub sijhawm tso tawm.
Ntxiv thiab,HTPB foob pob hluav taws roj pom qhov hluav taws kub tsawg. Qhov kev tswj xyuas qhov kub hnyiab no tso cai rau kev tswj xyuas ntau dua thiab kev kwv yees kev sib tw, uas yog qhov tseem ceeb rau cov ntawv thov uas xav tau kev tswj hwm thiab kev ua haujlwm. Cov kws tsim khoom tuaj yeem tsim tau lub foob pob hluav taws txoj hauv kev thiab kev ya davhlau, txhim kho tag nrho lub hom phiaj ua tiav.
Txawm hais tias HTPB foob pob hluav taws roj muaj ntau qhov zoo, nws kuj muaj qee qhov kev txwv. Ib qho kev txwv yog nws qhov tshwj xeeb impulse qis dua piv rau lwm hom propellant. Tshwj xeeb impulse yog ib qho kev ntsuas ntawm yuav ua li cas npaum li cas ib tug propellant converts roj loj rau hauv thrust. Txawm hais tias HTPB muab cov kev xav zoo tshwj xeeb, muaj qee cov tshuaj tiv thaiv uas tuaj yeem muab cov txiaj ntsig tshwj xeeb siab dua.
Post lub sij hawm: Nov-05-2023