Cov ntaub ntawv sib xyaw ua ke tau dhau los ua cov ntaub ntawv zoo tshaj plaws rau kev tsim cov dav hlau qis vim lawv lub teeb yuag, lub zog siab, tiv taus corrosion thiab plasticity. Hauv lub caij nyoog no ntawm kev lag luam qis uas nrhiav kev ua haujlwm zoo, lub roj teeb lub neej thiab kev tiv thaiv ib puag ncig, kev siv cov ntaub ntawv sib xyaw tsis yog tsuas yog cuam tshuam rau kev ua tau zoo thiab kev nyab xeeb ntawm cov dav hlau, tab sis kuj yog qhov tseem ceeb rau kev txhawb nqa kev txhim kho ntawm tag nrho kev lag luam.
Cov roj carbon fibercov khoom sib xyaw ua ke
Vim nws lub cev tsis hnyav, muaj zog heev, tiv taus corrosion thiab lwm yam ntxwv, carbon fiber tau dhau los ua cov khoom siv zoo tshaj plaws rau kev tsim cov dav hlau qis-siab. Nws tsis tsuas yog txo qhov hnyav ntawm cov dav hlau xwb, tab sis kuj txhim kho kev ua tau zoo thiab cov txiaj ntsig kev lag luam, thiab dhau los ua qhov hloov pauv zoo rau cov khoom siv hlau ib txwm muaj. Ntau tshaj 90% ntawm cov ntaub ntawv sib xyaw hauv skycars yog carbon fiber, thiab seem li 10% yog iav fiber. Hauv eVTOL dav hlau, carbon fiber yog siv dav hauv cov khoom siv thiab cov tshuab propulsion, suav txog li 75-80%, thaum cov ntawv thov sab hauv xws li beams thiab cov qauv rooj zaum suav txog 12-14%, thiab cov roj teeb thiab cov khoom siv avionics suav txog 8-12%.
Cov fibercov khoom siv sib xyaw ua los ntawm iav
Cov yas fiberglass reinforced (GFRP), nrog nws txoj kev tiv thaiv corrosion, siab thiab qis kub tsis kam, tiv thaiv hluav taws xob, hluav taws kub retardant thiab tiv thaiv kev laus, ua lub luag haujlwm tseem ceeb hauv kev tsim cov dav hlau qis xws li drones. Kev siv cov khoom no pab txo qhov hnyav ntawm lub dav hlau, nce qhov payload, txuag hluav taws xob, thiab ua tiav qhov tsim sab nraud zoo nkauj. Yog li ntawd, GFRP tau dhau los ua ib qho ntawm cov ntaub ntawv tseem ceeb hauv kev lag luam qis-qhov siab.
Hauv cov txheej txheem tsim cov dav hlau qis-siab, cov ntaub fiberglass yog siv dav hauv kev tsim cov khoom tseem ceeb xws li airframes, tis, thiab tails. Nws cov yam ntxwv sib dua pab txhim kho kev ua haujlwm ntawm lub dav hlau thiab muab cov qauv muaj zog thiab ruaj khov.
Rau cov khoom uas xav tau cov nthwv dej zoo heev, xws li radomes thiab fairings, cov ntaub ntawv fiberglass composite feem ntau yog siv. Piv txwv li, lub dav hlau UAV ntev-siab thiab US Air Force's RQ-4 "Global Hawk" siv cov ntaub ntawv carbon fiber composite rau lawv cov tis, tus tw, lub cav thiab lub fuselage tom qab, thaum lub radome thiab fairing yog ua los ntawm cov ntaub ntawv fiberglass composite kom ntseeg tau tias muaj kev sib kis teeb liab meej.
Cov ntaub fiberglass siv tau los ua cov rooj vag dav hlau thiab cov qhov rai, uas tsis yog tsuas yog ua kom zoo nkauj thiab zoo nkauj ntawm lub dav hlau xwb, tab sis kuj ua rau kev nplij siab ntawm kev caij tsheb zoo dua. Ib yam li ntawd, hauv kev tsim qauv satellite, cov ntaub iav fiber kuj tseem siv tau los tsim cov qauv sab nraud ntawm cov vaj huam sib luag hnub ci thiab antennas, yog li txhim kho qhov zoo li thiab kev ua haujlwm ntawm cov satellites.
Cov fiber aramidcov khoom sib xyaw ua ke
Cov ntaub ntawv aramid honeycomb core tsim nrog cov qauv hexagonal ntawm bionic ntuj honeycomb yog qhov hwm heev rau nws lub zog tshwj xeeb zoo heev, qhov tshwj xeeb stiffness thiab cov qauv ruaj khov. Tsis tas li ntawd, cov khoom no kuj muaj cov suab rwb thaiv tsev zoo, rwb thaiv tsev kub thiab cov nplaim taws retardant zog, thiab cov pa luam yeeb thiab tshuaj lom tsim thaum lub sijhawm combustion yog tsawg heev. Cov yam ntxwv no ua rau nws nyob hauv qhov chaw hauv cov ntawv thov siab ntawm aerospace thiab high-speed txhais tau tias ntawm kev thauj mus los.
Txawm hais tias tus nqi ntawm cov ntawv aramid honeycomb core khoom kim dua, nws feem ntau raug xaiv ua cov khoom siv tseem ceeb rau cov khoom siv siab xws li dav hlau, foob pob hluav taws, thiab satellites, tshwj xeeb tshaj yog hauv kev tsim cov khoom siv uas xav tau broadband nthwv dej permeability thiab siab rigidity.
Cov txiaj ntsig sib dua
Ua ib yam khoom siv tseem ceeb rau lub fuselage, daim ntawv aramid ua lub luag haujlwm tseem ceeb hauv cov dav hlau loj uas pheej yig xws li eVTOL, tshwj xeeb tshaj yog ua cov txheej txheem carbon fiber honeycomb sandwich.
Hauv thaj chaw ntawm cov tsheb tsis muaj neeg tsav, cov khoom siv Nomex honeycomb (aramid ntawv) kuj siv dav, nws yog siv rau hauv lub plhaub fuselage, daim tawv nqaij tis thiab ntug ua ntej thiab lwm qhov chaw.
Lwm yamcov ntaub ntawv sib xyaw ua ke sandwich
Cov dav hlau qis qis, xws li cov tsheb tsis muaj neeg tsav, ntxiv rau kev siv cov ntaub ntawv txhawb nqa xws li carbon fiber, iav fiber thiab aramid fiber hauv cov txheej txheem tsim khoom, cov ntaub ntawv sandwich xws li honeycomb, zaj duab xis, ua npuas yas thiab ua npuas kua nplaum kuj siv dav.
Hauv kev xaiv cov ntaub ntawv sandwich, feem ntau siv yog honeycomb sandwich (xws li ntawv honeycomb, Nomex honeycomb, thiab lwm yam), ntoo sandwich (xws li birch, paulownia, ntoo thuv, basswood, thiab lwm yam) thiab ua npuas ncauj sandwich (xws li polyurethane, polyvinyl chloride, polystyrene ua npuas ncauj, thiab lwm yam).
Cov qauv ua npuas ncauj sandwich tau siv dav hauv cov qauv ntawm UAV airframes vim nws cov yam ntxwv tsis muaj dej thiab ntab thiab cov txiaj ntsig thev naus laus zis ntawm kev muaj peev xwm sau cov qhov ntawm cov qauv sab hauv ntawm tis thiab tis tw tag nrho.
Thaum tsim cov UAVs ceev qis, cov qauv honeycomb sandwich feem ntau yog siv rau cov khoom uas muaj qhov tsis tshua muaj zog, cov duab tsis tu ncua, cov nplaim loj thiab yooj yim rau kev teeb tsa, xws li cov nplaim pem hauv ntej tis, cov nplaim ntsug tis, cov nplaim tis, thiab lwm yam. Rau cov khoom uas muaj cov duab nyuaj thiab cov nplaim me me, xws li cov nplaim elevator, cov nplaim rudder, cov nplaim aileron rudder, thiab lwm yam, cov qauv ua npuas ncauj sandwich yog qhov zoo dua. Rau cov qauv sandwich uas xav tau lub zog siab dua, cov qauv sandwich ntoo yuav raug xaiv. Rau cov khoom uas xav tau ob qho tib si lub zog siab thiab lub zog siab, xws li daim tawv nqaij fuselage, T-beam, L-beam, thiab lwm yam, cov qauv laminate feem ntau yog siv. Kev tsim cov khoom no yuav tsum tau preforming, thiab raws li qhov xav tau hauv-dav hlau stiffness, bending zog, torsional stiffness thiab lub zog xav tau, xaiv cov fiber reinforced fiber, matrix khoom, fiber content thiab laminate, thiab tsim cov ces kaum sib txawv, txheej thiab txheej txheej, thiab kho los ntawm ntau qhov kub thiab txias thiab siab siab.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-22-2024
