Filimu nɛnɛ .
Nɛnɛ kɛcogo minnu na, fɛnɲɛnamafagalanw walima gazi bɛ kɛ filimu finman ye kogo sumayalen kan walasa ka gazi jenilen bali ka funteni bila kogo la, o bɛ wele ko liquid film cooling or air film cooling. Motɛri jilama dɔ ka wuli-wuliyɔrɔ bɛ baara kɛ ni jilama filimu nɛnɛ ye nozzle da la yɔrɔ min na funteni jiginni density (jibɔ density) ka bon kosɛbɛ. A ka c’a la, sɛrɛkili min ka dɔgɔn- ɲagami hakɛ walima fɛnɲɛnamafagalan tilennenw bɛ kɛ pikirijikɛlan lamini na walasa ka duguma-sumalan dakun yɔrɔ walima filimu kɛ jeniyɔrɔ kɔnɔna kogo kɛrɛfɛ walasa ka gaziba min bɛ bɔ cɛmancɛ yɔrɔ la ka bɔ kogo la. Fiɲɛ filimu nɛnɛ bɛ kɛ ka caya turbine blades ani tasuma-tubuw la turbojet motɛriw la, wa a kala funteni bɛ se ka dɔgɔya ni degere 400 fo 600 ye . Motɛri jilama dɔw bɛ turbine exhaust don thrust chamber nozzle kɔnɔ walasa ka fiɲɛ filimu nɛnɛ kɛ nozzle kɔnɔna kogo kan.
Sweating Cooling .
A bɛ fɔ fana ko nɛnɛmadacogo. Yɔrɔ minnu bɛ funteni na, olu dilannen don ni porose ye, ani nɛnɛmadalan bɛ bɔ yɔrɔ funteniman na ka tɛmɛ mikroporew fɛ walasa ka funteni bɔ, ka sɔrɔ ka nɛnɛma filimu dɔ kɛ kogo kan, o min bɛ nɛnɛ nɔ ɲuman sɔrɔ. Ikomi a ka gɛlɛn ka porose fɛnw dilan, karɔbɔni bɛ sɔrɔ hidrɔkarboniw jeni kɔfɛ nɔgɔya la ka mikroporew datugu. Nin nɛnɛ kɛcogo in ma kɛ ka caya, wa a bɛ kɛ dɔrɔn ka oksizɛni jilama pikirijikɛlanw nɛnɛ-jibɔlanw jilamaw.
Ablation ka nɛnɛ .
A bɛ kɛ ka caya ni roke motɛriw ye (aw ye ablation heat protection, ablation materials lajɛ). Yɛrɛ fana bɛ yen-nɛnɛ kɛcogo, o min ni ablation cooling bɛ tali kɛ ɲɔgɔn na. Porouse tungsten bɛ kɛ matrix ye, ani warijɛ, nɛgɛ, zinki ani fɛn wɛrɛw ni u wulicogo ka dɔgɔn, olu bɛ don. Ni a sumayalen don, fɛn minnu bɛ ni wuliyɔrɔw ye minnu ka dɔgɔn, olu bɛ sublimate (sɔgɔsɔgɔ) ani ka boli walasa ka nɛnɛ jɔyɔrɔ ta. Matrix tungsten ye refractory ani corrosion{5}} ye, wa a bɛ se k’a cogoya mara. A bɛnnen don ka kɛ ni roke motɛri solidew ka nozzle ye.
Cooling radiative .
Aw bɛ baara kɛ ni fɛn sumalenw ka funteni ye walasa ka funteni jɛnsɛn kɛnɛma. A ka c’a la, nɛnɛba bɛ kɛ nozzle extension yɔrɔ la ni funteni jiginni hakɛ dɔgɔman ye roke motɛriw kɔnɔ, gazi bɔbaga min ka gazi funteni ka dɔgɔ, ani thrust chamber of unit propellant decomposition. Piston motɛri silinda kunkolo funteni nɛrɛma fana jɔyɔrɔ ka bon funteni jɛnsɛnni radiyatif la. Radiation heat dissipation effect ɲɛnabɔli bɛ tali kɛ kɛrɛnkɛrɛnnenya la baara kɛli la ni fɛnw ye minnu bɛ se ka funteni sɔrɔ kosɛbɛ walasa ka yɔrɔ funtenimaw dilan; Filanan, a bɛ tali kɛ dugukolo sanfɛla nɛrɛma ɲɛnabɔli la, o kɔrɔ ye ko ka sanfɛ{4}}Pinɛ funteni hakɛ kɛ ni nɛrɛ ye min ka ca ni 0,85 ye kogo sanfɛ.
Funteni insulasi layɛrɛ .
Dacogo walima nɔrɔli sanfɛ-Fɛnɲɛnamafagalan minnu bɛ se ka funteni kunbɛn ni funteni jiginni dɔgɔman ye kogo funteni kan walasa ka gazi funteni jiginni dɔgɔya kogo la. Funteni-sɛnɛfɛnw minnu bɛ kɛ ka caya i n’a fɔ zirkoni ɔkisidi ani aliminiyɔmu ɔkisidi, olu bɛnnen don misiriw ma minnu bɛ se ka wuli ka bɔ u nɔ na; Graphite, tungsten carbide, seramiki, a ɲɔgɔnnaw bɛnnen don rocket motɛriw ma; Seramiki, sanfɛ{3}}Fɛnɲɛnama insulasi penti, asibiti, a ɲɔgɔnnaw bɛnnen don turbojet motɛriw ma.