MACH en las puntas de la hélice
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Diseño de elementos de Motor alternativo Daniel Zuñiga Bocanegra Verificación por MACH en las puntas a diferentes RPM Datos: Motor Continental 10-470 Aeronave Cessna 180 ( (1) ) ≔ Vc ⋅ 220 kph ≔ n ⋅ 43.75 ― 1 s ≔ Vr = ‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + ( (Vc) ) 2 ( ( ⋅ ⋅ π nD) ) 2 295.032 ― m s ≔ Potencia 260 hp ≔ MACH = ―― Vr Vs 0.86 ≔ N ⋅ 2625 ―― 1 min ≔ Octano − 100 130 ≔ D ⋅ 2.10 m ≔ Vs ⋅ 343 ― m s ( (4) ) ≔ n2 ⋅ 133.333 ― 1 s ≔ Vr2 ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + ( (Vc) ) 2 ( ( ⋅ ⋅ π n2 D) ) 2 = Vr2 881.764 ― m s ≔ MACH = ―― Vr2 Vs 2.571 ( (2) ) ( (5) ) ≔ n2 ⋅ 166.66 ― 1 s ≔ n ⋅ 66.666 ― 1 s ≔ Vr2 ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + ( (Vc) ) 2 ( ( ⋅ ⋅ π n2 D) ) 2 ≔ Vr = ‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + ( (Vc) ) 2 ( ( ⋅ ⋅ π nD) ) 2 444.044 ― m s = Vr2 ⎛ ⎝ ⋅ 1.101 10 3 ⎞ ⎠ ― m s ≔ MACH = ―― Vr2 Vs 3.211 ≔ MACH = ―― Vr Vs 1.295 ( (3) ) ≔ n ⋅ 100 ― 1 s ≔ Vr = ‾‾‾‾‾‾‾‾‾‾‾‾‾‾ + ( (Vc) ) 2 ( ( ⋅ ⋅ π nD) ) 2 662.559 ― m s ≔ MACH = ―― Vr Vs 1.932
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Verificación de la velocidad en las puntas de la helice.
Transcript of MACH en las puntas de la hélice
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Diseo de elementos de Motor alternativo
Daniel Zuiga Bocanegra
Verificacin por MACH en las puntas a diferentes RPM
Datos:Motor Continental 10-470Aeronave Cessna 180
((1))
Vc 220 kph
n 43.75 1
s
Vr =
+((Vc))2 (( n D))
2295.032
m
s
Potencia 260 hp
MACH =Vr
Vs0.86
N 2625 1
min
Octano 100 130
D 2.10 m
Vs 343 m
s
((4))n2 133.333
1
s
Vr2
+((Vc))2 (( n2 D))
2
=Vr2 881.764 m
s
MACH =Vr2
Vs2.571((2))
((5))n2 166.66
1
s
n 66.666 1
s
Vr2
+((Vc))2 (( n2 D))
2
Vr =
+((Vc))2 (( n D))
2444.044
m
s
=Vr2 1.101 103
m
s
MACH =Vr2
Vs3.211
MACH =Vr
Vs1.295
((3))
n 100 1
s
Vr =
+((Vc))2 (( n D))
2662.559
m
s
MACH =Vr
Vs1.932