Vim tias lub dav hlau ya nrawm nrawm heev thiab qhov hnyav tag nrho yog qhov loj heev, nws "braking" yuav tsum muaj ntau lub zog nres, tshwj xeeb tshaj yog nyob rau hauv txoj kev khiav xws li dej, daus thiab dej khov, tsuas yog lub turbulence ntawm lub tis ntawm lub brakes. Lub rooj tsavxwm thiab cov iav tsaws nyob deb ntawm qhov txaus kom tau raws li qhov yuav tsum tau ua ntawm kev sib tsoo, uas xav kom peb hais txog peb tus neeg ua yeeb yam niaj hnub no - aeroengine thrust reverser.
Lub thrust reverser yog ib qho khoom siv feem ntau siv rau cov dav hlau loj. Los ntawm kev hloov lub dav hlau kev taw qhia ntawm lub aeroengine los ntawm rov qab mus rau pem hauv ntej, nws generates ib tug thrust opposite rau pem hauv ntej kev taw qhia ntawm lub aircraft, uas zoo heev txhim kho lub deceleration kev ua tau zoo ntawm lub aircraft thaum nws tsaws, thiab txawm paub "rov qab". ". Txij li thaum daim ntawv thov ntawm thrust reverser, qhov kev ncua deb ntawm lub dav hlau tau luv los ntawm 3, 000 meters mus rau tsawg dua 450 meters, nrog siab dua "braking" kev ntseeg tau.
Hom thrust reversers
01
Baffle hom thrust reverser
Lub baffle-hom thim rov qab thrust tsim rov qab thrust los ntawm qhib ob lub thoob-zoo li tus baffles los hloov cov kev taw qhia ntawm airflow. Qhov thrust reverser no tau nruab rau tom qab kawg ntawm lub aeroengine, thiab nws cov qauv yog qhov yooj yim, thiab nws txoj kev ntseeg siab yog siab, tab sis nws kuj hnyav thiab nws cov kev ua haujlwm braking tsawg. Baffle-hom thrust reversers feem ntau yog siv nyob rau hauv turbojet xyaw los yog xyaw nrog me me bypass ratios.
02
cascade thrust reverser
Lub cascade thim rov qab thrust yog tsim los ntawm cascades, choke qhov rooj thiab lub hau txav tau. Tom qab lub thrust reverser tau qhib, lub hau txav tau txav rov qab los nthuav tawm cov cascades, thiab lub qhov rooj kaw qhov rooj kaw tib lub sijhawm los thaiv cov cua nkag mus ntawm lub cav, thiab cov cua ntws zoo. Nws yog tso tawm nyob rau hauv opposite kev taw qhia tawm tsam lub cascade, generating rov qab thrust. Lub cascade-type thrust reverser qauv yog qhov nyuaj, tab sis nws yog ntau dexterous thiab compact, nrog zoo airflow kev taw qhia thiab siab braking efficiency. Lub Boeing 747 neeg caij dav hlau siv lub cascade thrust reverser.
03
baffle qhov rooj pushback
Lub baffle-type thrust reverser muab cov yam ntxwv ntawm cov baffle-type thrust reverser thiab cascade-type thrust reverser. Nws muaj ib txheej ntawm baffle qhov rooj nyob ib ncig ntawm nws. Lub airflow tuaj yeem hloov cov kev taw qhia ntawm airflow thiab tsim cov nyhuv ntawm thim rov qab. Cov qauv complexity thiab braking efficiency ntawm no hom thrust reverser yog nyob nruab nrab ntawm cascade hom thrust reverser thiab baffle hom thrust reverser, thiab nws yuav tsum tau ntawm lub sealing ntawm lub qhov rooj folding yog kuj siab. Cov dav hlau dav hlau dav hlau Airbus A330 thiab A340 txais yuav lub qhov rooj baffle thrust reverser.
