Liwiro ndi lofunika kwambiri pa ndege. Simungalankhule za ndege popanda kulankhula za liwiro. Zimakhudza chilichonse—kagwiridwe ka ntchito, kugwiritsa ntchito bwino mafuta, komanso nthawi youluka. Koma si liwiro lonse lomwe ndi lofanana.
Oyendetsa ndege akukumana ndi mavuto ambiri liwiro la ndege. Liwiro la mpweya losonyezedwa (IAS), liwiro la mpweya lolinganizidwa (CAS), liwiro lenileni la mpweya (TAS), ndi liwiro la pansi—zonsezi zimakwaniritsa zolinga zosiyanasiyana. Ngati simukuzimvetsa, simukumvetsa kuuluka.
Chimodzi mwa zofunika kwambiri? TAS. Ndi liwiro lenileni la ndege yomwe ikuyenda mlengalenga, osakhudzidwa ndi mphepo. Ndipo nayi gawo losangalatsa: liwiro lenileni la mpweya limawonjezeka pamene mukukwera.
N’chifukwa chiyani zimenezi zimachitika? Zosavuta—kuchuluka kwa mpweya kumasintha malinga ndi kutalika. Mukakwera kwambiri, mpweya umakhala wochepa, kukana kwake kumakhala kochepa, ndipo ndegeyo imayenda mofulumira kwambiri mumlengalenga. Ngakhale liwiro la mpweya litawonetsedwa, liwiro lenileni la mpweya limapitirira kukwera.
Ngati mukufuna kudziwa chifukwa chake liwiro lenileni la mpweya limawonjezeka malinga ndi kutalika, momwe limayezedwera, komanso chifukwa chake lili lofunika, bukuli limafotokoza zonse - palibe zopanda pake, koma chidziwitso chenicheni chomwe oyendetsa ndege amafunikira.
Kodi True Airspeed ndi chiyani?
Liwiro ndiye chinthu chofunika kwambiri pa ndege. Koma si liwiro lonse lomwe limapangidwa mofanana.
Liwiro lenileni la ndege (TAS) ndi liwiro lenileni la ndege yomwe ikuyenda mumlengalenga. Ndi losiyana ndi lomwe mukuwona pa chizindikiro cha liwiro la ndege. Nambala imeneyo? Ndi liwiro la mpweya losonyezedwa (IAS), ndipo sizikufotokoza nkhani yonse.
Pamalo otsika, TAS ndi IAS zimakhala zofanana. Koma pamene mukukwera, kuchuluka kwa mpweya kumachepa, ndipo ndege imayenda mofulumira mumlengalenga wochepa. Izi zikutanthauza kuti TAS yanu imawonjezeka, ngakhale IAS yanu itakhalabe chimodzimodzi.
Chifukwa chiyani izi zili zofunika? Oyendetsa ndege amagwiritsa ntchito TAS pokonzekera ndege, kuyenda, komanso kugwiritsa ntchito mafuta moyenera. Kuthamanga kwenikweni kwa ndege, nthawi yoyendamo ifupikitsa. Paulendo wautali, TAS ndiye nambala yofunika kwambiri.
Liwiro la Mlengalenga Loona vs. Liwiro la Mlengalenga Losonyezedwa
Zimene mukuona pa chizindikiro cha liwiro la ndege si liwiro lanu lenileni mumlengalenga. Apa ndi pomwe kusiyana pakati pa liwiro lenileni la mpweya (TAS) ndi liwiro losonyezedwa la mpweya (IAS) kumawonekera.
Liwiro la mpweya (IAS) losonyezedwa ndi chizindikiro cha liwiro la mpweya (ASI) cha ndegeyo. Limachokera ku mphamvu yosinthasintha kuchokera ku chubu cha pitot. Koma nayi njira yopezera—mukamauluka kwambiri, mpweya umakhala wochepa, komanso mphamvu yocheperako yomwe chubu cha pitot chimayesa.
Liwiro lenileni la mpweya (TAS) ndi liwiro lenileni lomwe limayenda mumlengalenga, lomwe limakonzedwa kuti ligwirizane ndi kutalika ndi kusintha kwa kuthamanga kwa mpweya. Limawonjezeka ndi kutalika chifukwa ndegeyo imakhala ndi kukana kochepa mumlengalenga wochepa.
Woyendetsa ndege ali pamtunda wa mamita 35,000 akhoza kuona ma knots 250 IAS, koma liwiro lawo lenileni la mpweya likhoza kukhala ma knots opitirira 450. Ndi kusiyana kwakukulu kumeneko.
Nazi zomwe muyenera kudziwa:
- IAS ndi yoyang'anira ndege—Imauza oyendetsa ndege ngati ali mkati mwa malire otetezeka.
- TAS ndi yothandiza pakuyenda— imafotokoza liwiro lomwe ndegeyo ikuyenda mlengalenga.
- Mukakwera ndege, kusiyana pakati pa IAS ndi TAS kumakulanso.
Ichi ndichifukwa chake TAS ndi yofunika—ndi chiwerengero chomwe chimakhudza nthawi yoyenda pandege, kugwiritsa ntchito bwino mafuta, komanso magwiridwe antchito onse.
Zotsatira za Kukwera kwa Mlengalenga pa Mlengalenga Yeniyeni
Ukakwera kwambiri, umauluka mofulumira. Koma chifukwa chiyani?
Zonsezi zimadalira kuchuluka kwa mpweya. Pamalo otsika, mpweya umakhala wokhuthala, zomwe zimapangitsa kuti ndegeyo isathe kupirira. Pamene mtunda ukukwera, mamolekyu a mpweya amafalikira, zomwe zimachepetsa kukoka. Ndi kukana kochepa, ndegeyo imayenda mofulumira mumlengalenga, ngakhale chizindikiro cha liwiro la mpweya chikuwonetsa nambala yotsika.
Tsopano, tiyeni tikambirane za kutentha. Pamene kutalika kumawonjezeka, kutentha kumatsika, zomwe zimakhudza kuchuluka kwa mpweya. Mpweya wozizira ndi wokhuthala kuposa mpweya wofunda, kotero ndegeyo imakoka pang'ono komanso imakumana ndi TAS yokwera kwambiri m'malo ozizira pamalo okwera kwambiri.
Ichi ndichifukwa chake TAS imawonjezeka pamene ndege ikukwera mmwamba. Ndege youluka pa mtunda wa mamita 35,000 yokhala ndi liwiro la mpweya (IAS) la mafundo 250 ikhoza kukhala ndi TAS ya mafundo oposa 450. Kusiyana kwakukulu kumeneku. Kumvetsetsa izi ndikofunikira kwambiri pakukonzekera mafuta, kuyenda, komanso kugwira ntchito bwino paulendo wautali.
Kuwerengera Koona kwa Airspeed
Oyendetsa ndege saganizira liwiro lenileni la ndege. Amawerengera liwirolo.
Pali njira yosavuta yosinthira IAS kukhala TAS:
Kotero, ngati mukuuluka pa mtunda wa mamita 10,000 ndi IAS ya ma knot 200, liwiro lanu lenileni la mpweya ndi pafupifupi ma knot 240. Mukakwera kwambiri, kusiyana kwake kumakhala kwakukulu.
Oyendetsa ndege ambiri sawerengera izi pamanja nthawi zonse. Amagwiritsa ntchito ma calculator a TAS—kaya omangidwa mu avionics zamakono kapena omwe amapezeka ngati zida zokonzekera ndege. Ma calculator awa amatenga zinthu monga kutalika, kutentha, ndi kupanikizika kuti apereke kuwerenga kwa TAS nthawi yomweyo.
Mfundo yaikulu ndi yakuti TAS si chinthu chomwe mumachiyerekeza. Ndi chinthu chomwe mumachiwerengera. Ndipo pamalo okwera kwambiri, ndi nambala yomwe ndi yofunika kwambiri.
Fomula Yeniyeni ya Airspeed
Liwiro lenileni la mpweya (TAS) si chinthu chomwe oyendetsa ndege amachiyerekeza—ndi chinthu chomwe amachiwerengera. Kumvetsetsa njira ya liwiro lenileni la mpweya ndikofunikira kwambiri kuti mukonzekere bwino komanso kuti muyendetse ndege.
Fomula Yokhazikika ya True Airspeed
Njira Yamasamu:
Zosintha Zofunikira Zafotokozedwa
- Kuthamanga kwa Airspeed (IAS): Liwiro lomwe lawonetsedwa pa chizindikiro cha liwiro la mpweya. Silikuwerengera kutalika kapena kusintha kwa kutentha.
- Kukwera kwa Kupanikizika: Kutalika komwe kwakonzedwa kuti kugwirizane ndi kuthamanga kwa mpweya kwanthawi zonse (29.92 inHg kapena 1013.25 hPa).
- Kutentha: Zimakhudza kuchulukana kwa mpweya, zomwe zimakhudza liwiro lenileni la mpweya. Mpweya wozizira pamalo okwera umachepetsa kukana kwa mpweya, zomwe zimawonjezera TAS.
Chitsanzo Kuwerengera
Tiyerekeze kuti woyendetsa ndege akuuluka pa mtunda wa mamita 15,000 ndi liwiro la mpweya la mafundo 180.
Pogwiritsa ntchito njira yowerengera mwachangu:
Izi zikutanthauza kuti ndegeyo ikuyenda mlengalenga pa liwiro la ma knots 234, ngakhale chizindikiro cha liwiro la mpweya chikuwonetsa. 180 mfundo.
Liwiro lenileni la mpweya limawonjezeka pamene mpweya uli m'mwamba chifukwa cha kuchuluka kwa mpweya kochepa. Ichi ndichifukwa chake oyendetsa ndege amagwiritsa ntchito TAS poyendetsa sitima yapamadzi, kugwiritsa ntchito mafuta moyenera, komanso kukonzekera kuyenda.
Liwiro lenileni la Mpweya ndi Liwiro la Pansi
Liwiro lenileni la mpweya ndi liwiro la pansi sizili zofanana. Liwiro loyamba ndi liwiro lanu mumlengalenga, lina ndi liwiro lanu pansi.
Kusiyana Kwakukulu
- True Airspeed (TAS) – Liwiro lenileni la ndege poyerekeza ndi mpweya wozungulira.
- Liwiro Lapansi (GS) – Liwiro lenileni la ndegeyo pamwamba pa nthaka.
Ngakhale TAS ya ndege itakhala yosasintha, liwiro lake la pansi limasintha malinga ndi momwe mphepo imakhalira.
Momwe Mphepo Imakhudzira Liwiro la Pansi
- Mphepo yamkuntho (mphepo ikuwomba motsutsana ndi ndege): Amachepetsa liwiro la pansi.
- Mphepo ikukankhira ndege patsogolo (Tailwind): Zimawonjezera liwiro la pansi.
- Mphepo yowoloka (mphepo yochokera m'mbali): Zimakhudza njira yowulukira koma osati liwiro lolunjika patsogolo.
Chifukwa Chake Oyendetsa Ndege Ayenera Kuganizira za Liwiro la Pansi
- Kulondola kwa Nthawi Yoyenda Ndege - Liwiro la pansi ndi lomwe limatsimikiza nthawi yomwe ingatenge kuti ifike komwe ikupita, osati liwiro lenileni la mpweya.
- Kukonzekera kwa Mafuta - A mphepo yamkuntho akhoza kuwonjezera kuyaka kwa mafuta mwa kuchepetsa liwiro la nthaka, pomwe mchira zingachepetse kugwiritsa ntchito mafuta.
- Zosintha Zoyendera - Oyendetsa ndege amasintha mitu ndi liwiro kuti agwirizane ndi mphepo ndikukhalabe panjira.
Mwachitsanzo, ngati TAS ya ndege ili ndi mafundo 250, koma ikukumana ndi mphepo yamphamvu ya mafundo 40, liwiro lake la pansi ndi mafundo 210 okha. Kumbali ina, ndi mphepo ya kumbuyo ya mafundo 40, liwiro la pansi limawonjezeka kufika mafundo 290.
Ichi ndichifukwa chake TAS imagwiritsidwa ntchito poyendetsa ndege, koma liwiro la pansi ndi lomwe limatsimikizira kuti ndege imafika mofulumira bwanji komwe ikupita.
Zotsatira za Kutentha pa Mphepo Yeniyeni
Kutentha kumachita gawo lalikulu pa kayendetsedwe ka ndege. Kumakhudza kuchuluka kwa mpweya, magwiridwe antchito a injini, ndipo chofunika kwambiri, TAS.
Momwe Kutentha Kumakhudzira Mphepo Yeniyeni Pamalo Osiyanasiyana
Pamalo otsika, mpweya umakhala wokhuthala ndipo umapangitsa kuti mpweya ukhale wokoka kwambiri, zomwe zikutanthauza kuti liwiro lenileni la mpweya limakhala pafupi ndi liwiro la mpweya lomwe lasonyezedwa. Pamene mtunda ukukwera, kutentha kumatsika, mpweya umakhala wochepa, ndipo liwiro lenileni la mpweya limakwera.
Koma apa pali kusintha—kutentha sikutsika kwamuyaya. Pafupifupi mapazi 36,000, kumakhala kokhazikika pa -56.5°C (-69.7°F) mumlengalenga wokhazikika. Kukhazikika kumeneku kumachita gawo lalikulu pakuwerengera kwa TAS pamalo okwera.
Udindo wa Mlengalenga Wapadziko Lonse (ISA)
International Standard Atmosphere (ISA) imapereka chizindikiro cha kutentha, kuthamanga, ndi kuchulukana kwa mpweya pamalo osiyanasiyana.
Makhalidwe Ofunika a ISA:
- Kutentha kwa nyanja: 15°C (59°F)
- Chiŵerengero cha kutentha: -2°C pa mamita 1,000 mpaka mamita 36,000
- Kutentha kosalekeza kuposa mapazi 36,000
Oyendetsa ndege amagwiritsa ntchito matebulo a ISA poyerekeza zinthu zenizeni ndi mitengo yokhazikika. Ngati kutentha kwenikweni kuli kotentha kuposa ISA, liwiro lenileni la mpweya lidzakhala lalikulu kuposa mitengo yowerengedwa. Ngati kuli kozizira kuposa ISA, liwiro lenileni la mpweya lidzakhala m'munsi.
Chifukwa Chake Kutentha Kozizira Kumawonjezera Mphepo Yeniyeni Pamwamba
Mpweya wozizira ndi wokhuthala kuposa mpweya wofunda, zomwe zimathandiza injini kupanga mphamvu zambiri ndi mapiko kuti zipange mphamvu zambiri. Kuchita bwino kumeneku kumatanthauza kuti ndege zikamauluka pamwamba, zimatha kuthamanga kwambiri popanda kugwiritsa ntchito mafuta ambiri.
Ndege ya Boeing 777 yomwe imayenda pa mtunda wa mamita 35,000 ikhoza kukhala ndi TAS ya mafundo 480 mu mikhalidwe yokhazikika ya ISA, koma mumlengalenga wozizira kuposa wamba, imatha kufika mafundo 500+ ndi mphamvu yomweyo.
Ndicho chifukwa chake kutentha n'kofunika—kumakhudza mwachindunji kugwiritsa ntchito mafuta moyenera, nthawi yowuluka, komanso momwe ndege imagwirira ntchito.
Ubale Pakati pa True Airspeed ndi Mach Number
Mukakwera ndege pamalo okwera kwambiri, TAS si chinthu chokhacho chomwe chili chofunika—Mach number imakhalanso yofunika kwambiri.
Momwe TAS Imagwirizanirana ndi Nambala ya Mach
- True Airspeed (TAS) - Amayesa liwiro lenileni kudzera mumlengalenga.
- Nambala ya Mach (M) - Amayesa liwiro poyerekeza ndi liwiro la mawu.
Pamene kutalika kukukwera, kutentha kwa mpweya kumatsika, ndipo liwiro la phokoso limachepa. Izi zikutanthauza kuti pamene kutalika kukukwera, ndege ikhoza kuyenda pa TAS yapamwamba koma ikadali pa nambala yotsika ya Mach.
Ndege yothamanga pa liwiro la ma knots 500 TAS pamadzi imayenda pa Mach 0.75. Koma pa liwiro la ma knots 35,000, TAS yomweyi ya ma knots 500 TAS ili pafupi ndi Mach 0.85 chifukwa cha liwiro lochepa la phokoso pamalo okwera.
Nambala Yofunika Kwambiri ya Mach ndi Ulendo Wothamanga Kwambiri
Nambala Yofunika Kwambiri ya Mach (Mcr): Liwiro limene mpweya umadutsa mbali zina za ndege limafika pa Mach 1 (liwiro la phokoso).
Ngati ndege yapitirira chiwerengero chake chofunikira cha Mach, imatha kukumana ndi mafunde ogwedezeka, kukoka kwambiri, komanso kulephera kulamulira. Ichi ndichifukwa chake ndege zambiri zamalonda zimayendera pa nambala za Mach zomwe zili pansi pa malire awo ofunika a Mach (nthawi zambiri Mach 0.78 - 0.86 kwa ndege zambiri).
Momwe Oyendetsa Magalimoto Amagwiritsira Ntchito Nambala ya Mach mu Ulendo Wapamadzi
Pamalo otsika, oyendetsa ndege amayendetsa liwiro la sitima pogwiritsa ntchito TAS. Koma pamwamba pa mapazi 25,000 - 30,000, amasinthira ku nambala ya Mach kuti apitirize kugwira ntchito bwino.
Chifukwa chiyani? Chifukwa nambala ya Mach imakhalabe yogwirizana ndi kusintha kwa kuchuluka kwa mpweya, zomwe zimapangitsa kuti ikhale yodalirika kwambiri pakuyenda panyanja pamalo okwera kwambiri.
Woyendetsa ndege akuuluka pa Mach 0.82 pa mtunda wa mamita 35,000 akhoza kukhala ndi TAS ya mafundo 480, koma pa mtunda wa mamita 40,000, kusunga Mach 0.82 kungatanthauze TAS pafupi ndi mafundo 500.
Ichi ndichifukwa chake liwiro lenileni la ndege ndi nambala ya Mach zimayenderana—chimodzi chimayesa liwiro lenileni, pomwe china chimatsimikizira kuuluka bwino komanso kotetezeka pamalo okwera.
Chifukwa Chake Kuthamanga Koona kwa Ndege N'kofunika
TAS si nambala chabe—ndi chinthu chofunikira kwambiri pa kayendetsedwe ka ndege, kugwiritsa ntchito bwino mafuta, komanso chitetezo cha ndege.
Chifukwa Chake Oyendetsa Ndege Amadalira TAS
Kuyenda ndi Kukonzekera Ndege – Oyendetsa ndege amagwiritsa ntchito TAS kuwerengera nthawi yoyembekezeredwa yofika (ETA), kutentha mafuta, ndi liwiro labwino kwambiri la ulendo wapamadzi. Popeza liwiro la mpweya limasintha malinga ndi kutalika, liwiro lenileni la mpweya limapereka muyeso wodalirika kwambiri wa maulendo ataliatali.
Kugwiritsa Ntchito Mafuta Mwachangu & Kusunga Mtengo – Maulendo a ndege amapangitsa kuti TAS ikhale yotsika mtengo kwambiri pa mafuta. Ndege yothamanga pa Mach 0.82 yokhala ndi TAS ya ma knots 480 imateteza bwino nthaka, kuchepetsa mtengo wa mafuta pamene ikuyendetsa liwiro.
Magwiridwe & Chitetezo - Liwiro lenileni la mpweya limathandiza kudziwa liwiro la ndege yoyima, kuchuluka kwa kukwera, ndi malire otetezeka ogwirira ntchito. Zimathandizanso pakuwerengera manambala a Mach, kuonetsetsa kuti ndege sizidutsa malire awo ofunikira a Mach pamalo okwera.
Udindo wa Zizindikiro za TAS mu Ndege Zamakono
Ndege zambiri zimakhala ndi machitidwe a avionics zomwe zimawerengera liwiro lenileni la mpweya zokha, kusintha kutentha, kutalika kwa kuthamanga kwa mpweya, ndi liwiro la mpweya lomwe lasonyezedwa. Mu ndege zakale, oyendetsa ndege amadalira kuwerengera pamanja kapena makompyuta oyendetsa ndege.
Pa maulendo okwera kwambiri, TAS ndiye chiŵerengero chofunikira kwambiri cha liwiro, makamaka m'ndege za ndege za jet ndi ndege zakutali.
Kutsiliza
TAS imawonjezeka ndi kutalika—ndipo zimenezo n’zofunika kwa woyendetsa aliyense.
Pamene mtunda ukukwera, kuchuluka kwa mpweya kumatsika, zomwe zimachepetsa kukoka kwake ndikuwonjezera TAS. Ngakhale kuti liwiro la mpweya lomwe lasonyezedwa lingakhalebe lomwelo, TAS imakwera, zomwe zimathandiza kuti ndege zizitha kuuluka bwino komanso kuyenda bwino.
Kumvetsetsa TAS ndi IAS, momwe imakhudzira kugwiritsa ntchito mafuta moyenera, komanso ubale wake ndi nambala ya Mach ndikofunikira kwambiri pakukonzekera bwino ndege.
Kwa oyendetsa ndege, liwiro lenileni la ndege si tsatanetsatane waukadaulo wokha—ndi chida chofunikira kwambiri kuti ndege iziyenda bwino, motetezeka, komanso molondola. Kaya mukuyendetsa ndege yaying'ono kapena ndege yamalonda, TAS imagwira ntchito pa gawo lililonse la ndege.
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