
propulsive karyakshamatha

aerospace enchineeyaringil, vimanam, rokkatt, bahirakasha pedaka roopakalppana ennivayumaayi bandhappett, mothatthilulla propulsion sisttam karyakshamatha formula _ 1 ennathu oru vaahanathinte indhanathil adangiyirikkunna oorjjam vaahanathinte gathikorjamaayi parivartthanam cheyyappedunnathino athine thwarithappeduthunnathino allengil aerodynamic dragg allengil guruthwaakarshanam moolamundaakunna nashtam maattisthaapikkunnathino ulla kaaryakshamathayaan. ganithashaasthraparamaayi, ithu formula 2 aayi prathinidheekarikkunnu, ivide formula 3 ennathu saikkil kaaryakshamathayum formula 4 ennathu propulsive kaaryakshamathayumaanu.
enchinte mechanical oorjjamaayi parivartthanam cheyyappedunna indhanathile thaaporjjathinte sathamaanamaayaanu saikkil karyakshamatha prakadippikkunnathu, koodaathe propulsive karyakshamatha vimaanathe munnott nayikkaan yadhaarthathil upayogikkunna mechanical oorjjathinte anupaathamaayi prakadippikkunnu. propulsive karyakshamatha ellaayppozhum onnil kuravaanu, kaaranam momentam samrakshikkunnathinu exhostinu kurachu gathikorjjam undaayirikkendathundu, koodaathe propulsive mechanism (propeller, jettu exhost allengil ducted phaan aakatte) orikkalum poornnamaayum kaaryakshamamalla. ithu exhost expalsion vegathayeyum vaayusanjaaratheyum valareyadhikam aasrayichirikkunnu.
saikkil karyakshamatha.
mikka aerospace vaahanangalum eathenkilum tharatthilulla heett enchinukal, saadhaaranayaayi oru aantharika jwalana enchinaanu. oru heett enchinte karyakshamatha oru nischitha alavilulla taporja inputtinu ethratholam upayogapradamaaya joliyaanu uthppaadanam ennathumaayi bandhappettirikkunnu.
thermodynamicsinte niyamangalil ninnu
mattoru vidhathil paranjaal, oru heett enchin chila taapa srothassukalil ninnulla thapam agiranam cheyyukayum athinte oru bhagam upayogapradamaaya joliyaayi parivartthanam cheyyukayum backie kuranja thapanilayil oru heett singlek athikkukayum cheiyunnu. oru enchinil, chelavazhicha oorjjavumaayi upayogapradamaaya joliyude anupaathamaan kaaryakshamathaye nirvachichirikkunnathu.
oru heett enchinte saidhaanthika paramavadhi karyakshamatha, carnot karyakshamatha, athinte pravartthana thapanilaye maathram aasrayichirikkunnu. ganithashaasthraparamaayi, reversible prakriyakalil, thanutha reservoirinu choodulla reservoir nashtappedunna athe alavil entropy labikkum (i.iii., formula _ 11), entropyil mattamilla. athinaal
ivide formula _ 13 ennathu choodulla uravidathinte kevala thapanilayum formula _ 14 ennathu colled sinkinte thapanilayum aanu, ithu saadhaaranayaayi kelvinukalil alakkunnu. formula _ 15 positteev aanennum formula _ 16 negatteevu aanennum shradhikkuka; eathu reversible varkk-extracting prakriyayilum, entropy mothatthil vardhikkunnilla, marichu oru choodulla (uyarnna entropy) sisttathil ninnu oru thanutha (kuranja entropy) systethilekku maattunnu, ithu taapa srothassinte entropy kuraykkukayum heett sinkinte vardhanavu vardhippikkukayum cheiyunnu.
propulsive karyakshamatha.
propulsive kaaryakshamathaye nirvachichirikkunnathu draavakathil cheiyunna pravartthanatthinteyum propulsive pavarinteyum anupaathamaan, i.iii. vaahanathinte vegathayude thrastt times.
pothuvaayi paranjaal, propulsive power inipparayunna reethiyil kanakkakkaam
intake, exhost masflo (formula _ 20, formula _ 21), vegatha (formula _ 22, formula _ 23) ennivayil ninnu thrastt kanakkakkaam
maruvashathu, enchin ozhukkil cheiyunna pravartthanam oro samayathum chalanathmaka oorjjathile maattamaan. ithu vaidyuthi ulppaadippikkaan upayogikkunna enchininteyo propullerinteyo fanudeo vaayuvinte vegatha vardhippikkaan upayogikkunna mattu samvidaanathinteyo karyakshamatha kanakkiledukkunnilla. ithu ozhukkil eathu vidhathilum cheytha pravartthanatthe soochippikkunnu, koodaathe ksheenicha gathikorja pravaahavum incoming gathikorja pravaahavum thammilulla vyathyaasamaayi ithu prakadippikkaam
athinaal propulsive karyakshamatha kanakkakkaam
upayogicha propulsion tharatthe aashrayich, eee samavaakyam vyathyastha reethikalil lalithamakkaam, ithu vividha enchin tharangalude chila prathyekathakal prakadamaakkunnu.
ennirunnaalum, cheria pinda-ozhukkukaleyum valia vegathakaleyum apekshichu valia pinda-ozhukkukalum cheria vegathakalum upayogikkumbol propulsive karyakshamatha mechappedunnuvennu pothuvaaya samavaakyam ithinakam kaanikkunnu, kaaranam denominatorile square padangal noonn-square padangalekkaal vegathil valarunnu.
propulsive kaaryakshamathayude maathrkayil undaakunna nashtangal vishadeekarikkunnathu eathu airo propulsion reethiyum vaahanathinte ethir dishayilekku neengunna oru jettine upekshikkunnu enna vasthuthayaan. eee jettile gathikorja pravaham formula _ 30 enna kesil formula _ 29 aanu.
jettu enchinukal.
vaayu shwasana enchinukalude propulsive karyakshamatha formula chuvade nalkiyirikkunnu.
pothuvaaya samavaakyathil formula _ 31 sajjeekarikkunnathiludeyum formula _ 32 ennu karuthunnathiloodeyum ithu uruthirinjekkaam. ithu pindatthinte ozhukk raddaakkukayum athilekku nayikkukayum cheiyunnu
shudhamaaya jettu enchinukalkku, prathyekichu afterburnerinu, intekkum exhost masflo thulyamaanennu karuthathe oru cheria alavil krithyatha nedaan kazhiyum, kaaranam exhost vaathakathil kuthivacha indhanathinte adhika pindove adangiyirikkunnu. turbofan enchinukale sambandhichidatholam, eksisttukalude masflo intake masfloyekkaal cheruthayirikkaam, kaaranam enchin compressoril ninnu vimaanathilekku "bleed eyar" nalkunnu. mikka saahacharyangalilum, ithu kanakkiledukkunnilla, kaaranam ithu computed cheytha propulsive karyakshamathayil kaaryamaaya vyathyasamonnum varuthilla.
thrasttinte samavaakyathil ninnu exhost velosity kanakkaakkunnathiloode (formula _ 36 ennu anumaanikkumbozhum), nirddishta thrasttinte (formula _ 37) oru pravartthanamenna nilayil namukk propulsive karyakshamatha nedaanum kazhiyum
ithinte oru anantharafalam, prathyekichu vaayu shwasana enchinukalil, valia alavil vaayuvine oru cheria alavil thwarithappeduthunnathinne, valia alavil vaayuvine thwarithappeduthunnathinne, valia alavil vaayuvine thwarithappeduthunnathu kooduthal oorjjakshamathayullathaanu ennathaanu. athukondaanu subsonic vegathayil lalithamaaya jettu enchinukalekkaal turbofan enchinukal kooduthal kaaryakshamamaakunnath.
rokkatt enchinukal.
uyarnna jwalana thapanilayum sammarddavum kaaranam oru rokkatt enchinte formula _ 3 saadhaaranayaayi uyarnnathaan, koodaathe neelamulla converging-diverging nosal upayogikkunnu. maarikkondirikkunna anthareeksha marddam kaaranam ithu uyarathinanusarichu alpam vyathyaasappedunnu, pakshe 70 sathamaanam vare aakam. bakkiyullavayil bhooribhaagavum exhostile choodaakki nashtappedunnu.
vaayuvinte abhavam samavaakyathinte roopathe mattunnathinaal rokkatt enchinukalkku vaayu shwasikkunna jettu enchinukalil ninnu alpam vyathyasthamaaya propulsive karyakshamatha (formula _ 4) undu. ithu rokkattukale avayude exhostinte vegatha kavian anuvadikkunnu.
jettu enchinukalkku samaanamaayi, exhost vegathayum vahana vegathayum poruthappeduthunnathu sidhaanthathil opttimal karyakshamatha nalkunnu. ennirunnaalum, praayogikamaayi, ithu valare kuranja nirddishta aavegathinu kaaranamaakunnu, ithu ganyamaayi valia proppallantinte aavasyakatha kaaranam valare valia nashtatthinu kaaranamaakunnu. ducted enchinukalil ninnu vyathyasthamayi, rund vegathakalum thulyamaakumbol polum rokkattukal oorjjam nalkunnu.
1903-ll konstaantin siolkovsky oru rokkattinte sharashari propulsive kaaryakshamathayekkurichu charcha cheythu, athine addeham eksoost vaathakathin vipareethamaayi "rokkattilekku kaimaattam cheyyappedunna sphodakavasthukkalude motham pravartthanatthinte bhagam" enna upayogappeduthal ("utilisaatsiya") ennu vilichu.
propeller enchinukal.
propulsionaayi oru propellerine aasrayikkunna resiprocating, turboprop enchinukalkku kanakkukoottal alppam vyathyasthamaan, kaaranam avayude outtputtu saadhaaranayaayi oorjjathekkaal shakthiyude adisthaanathilaanu prakadippikkunnathu. oru yoonit samayathil cherkkunna thaapatthinte samavaakyam, "q", thaazhepparayunna reethiyil sweekarikkaam
ivide btu/lb-ll indhanathinte kalori moolyam h =, lb/hr-ll indhana upabhoga nirakk h =, koodaathe j = thaapathinu thulyamaaya mechanical = 778.24 ft.lb/btu, ivide formula _ 43 kuthirashakthiyile enchin outtputtu aanu, 550 kondu gunichu secondil adii poundaayi parivartthanam cheiyunnu. petrolinu nirddishta indhana upabhogam "c" p "=" h "/" p "e" umm h = 20 052 btu/lb umm aanenkil, samavaakyam lalithamaakkunnu
shathamaanamaayi prakadippichu.
86 sathamaanathil oru saadhaarana propeller karyakshamatha formula 4 (thannirikkunna propeller roopakalppanayude opttimal airspeed, eyar density avasthakalkkaayi) kanakkaakkumbol, mothatthilulla paramavadhi propulsion karyakshamatha kanakkaakkunnath ingane

