Formation Of Propela pupụtara na ha Geometric Atụmatụ Na Nkebi
Formation Of Propela pupụtara na ha Geometric Atụmatụ Na Nkebi
Ebe ọ bụ na propela bụ akụkụ nwere ụdị anaghị akwụ ụgwọ, ọdịdị ya gbagwojuru anya. Iji dozie atụmatụ ịkpụzi igwe nke igwe na - ebugharị, anyị ga - ebu ụzọ nyochaa njirimara geometric ya. |
Ebe ọ bụ na mmiri dị na mmiri bụ akụkụ nwere onwe ya, ọdịdị ya gbagwojuru anya. Iji dozie atụmatụ ịkpụzi igwe nke igwe, anyị ga-ebu ụzọ nyochaa njirimara geometric ya. Ndị na-ebu ụzọ, dị ka kposara, nwere otu ma ọ bụ abụọ ntụgharị gburugburu akwu. Ọrụ mechara chọpụta na ọ bụrụ na ewere ngalaba nke gburugburu gburugburu kama iji gburugburu zuru oke, arụmọrụ ga-abawanye. Owere ihe karịrị afọ 100 nke imepụta usoro iji mepụta ụdị a taa. Designzọ e si arụ ọrụ nke propela bụ usoro map, ya bụ, a na-eme atụmatụ ahụ site na eserese eserese dịka nnwale nnwale si pụta ihe atụ. Dabere na imewe map, na igwe akuku bụ ndị na-atụ ụdị B, ndị na-akụ ụdị AU, na ndị na-akụ ụdị SSPA.
Formation Of Propela pupụtara
Nrụgide elu nke agụba propeller bụ akụkụ nke gburugburu gburugburu. A na-etolite elu okirikiri site na ụgbọ ala ụgbọ ala ab na-agbagharị gburugburu axis OO1 nke oghere propeller, ma n'otu oge ahụ na-arịgo elu tinyere OO1 na ọsọ ọsọ mgbe niile, dị ka egosiri na FIG. 1. Ebe mmegharị nke isi ihe ọ bụla na eriri generatric bụ okirikiri.
Mgbe a na-ele ya anya n'akụkụ axis, gburugburu bụ arc. Mgbe a na-ele ya anya site na ntụziaka perpendicular na axis, spiral bụ sinusoid.
Ebe dị anya n'etiti isi ihe ọ bụla na otu helix na axis OO1 na-adịgide adịgide. Ya mere, ọ bụrụ na a na-eme elu cylindrical na radius nke gburugburu dị ka radius (centreline cylindrical bụ axis OO1), a na-etinye spiral n'elu cylindrical. A na-akpọ ntugharị azụ nke ụgbọ ala azụ azụ, nke a na-egosipụta site na nkwụghachi azụ azụ ε, n'ozuzu ε = 5 ~ 15 Celsius.
Ngalaba Njirimara Nke Agụba
Nihi na ube ahu aghaghi iguzogide ihe nkpughari, ha aghaghi inwe ogidi. Udo ahụ nwere oke ọkpụrụkpụ n'elu ebe a na-egbutu ya na radii dị iche iche, nke kpebisiri ike site na nchịkọta ọkụ.
N'elu cylindrical nke nwere radius R (etiti nke dabara na etiti nke propeller shaft) na-agbakọta na agụba, na akụkụ nke ịkpụ bụ elu agụba. N'ileghachi anya na ntụziaka nke axis nku, ụgbọ elu ịkpụ bụ akụkụ nke arc nwere radius R, ọ bụghịkwa ahịrị kwụ ọtọ.
A na-enwekarị ụdị abụọ nke ngalaba agụba: airfoil na ụta, dị ka egosiri na Figure 2. A na-akpọ ebe dị anya b n'etiti nsọtụ abụọ nke ụgbọ elu tangent obosara nke ụgbọ elu tangent, nke a na-akpọkwa ogologo ogologo nke tangent. ụgbọ elu. A na-anọchi anya oke oke nke ngalaba nke t.
Ọnụ ọgụgụ kachasị elu nke akụkụ arch-shaped dị n'etiti, ya bụ, b / 2. Oke kachasị nke akụkụ ikuku ikuku bụ ihe dị ka otu ụzọ n'ụzọ atọ nke obosara nke obosara site na nsọtụ isi, ya bụ, ihe dị ka b / 3. The ọnọdụ nke oke ọkpụrụkpụ nke akụkụ ọ bụla nke agụba anaghị adịgide adịgide.
A na-akpọ oke nke oke oke na obosara nke eriri , a na-egosipụta ya site na δ, ya bụ, δ = t / b. δ na-egosi ogo nke abụba na mkpa nke ngalaba ahụ, na nnukwu δ na-egosi na akụkụ ahụ dị oke ma dị warara.
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