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Fundamentos de Engenharia Aeronáutica - Volume único

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237

Decolagem na altitude h = 3000m.

W (N)

S lo (m)

70 16,291

80 21,848

90 28,403

100 36,037

110 44,858

120 54,942

123,7 59,022

Para W = 70N

O coeficiente de sustentação ideal para a decolagem foi obtido no Exemplo 4.10:

C LLO

π ⋅ e ⋅ ⋅ µ

= 0

AR

2 ⋅φ

⋅ 0,717 ⋅ 6,83 ⋅ 0,03

C = π

LLO

2 ⋅ 0,836

C

LLO

= 0,275

O correspondente coeficiente de arrasto é:

C

D

C

D

C D

2

D0 L

= C + ( φ ⋅ K ⋅ C

= 0,022 + (0,836 ⋅ 0,065 ⋅ 0,275

= 0,02614

)

2

)

A velocidade de estol é:

v

estol

= 2 ⋅ W

ρ ⋅ S ⋅ C

Lmáx

v

estol

=

2 ⋅ 70

0,90926 ⋅ 0,9 ⋅1,65

vestol

=10,182 m/s

A velocidade de decolagem é 20% maior que a velocidade de estol, portanto:

v

= 1 , 2 ⋅

lo

v estol

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