Lampiran N-V Diagram
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LAMPIRAN Analisis dan Perhitungan n-V diagram Determination of +1g stall speed (V S ) V S = {2(GW/S) / ρC N max } 1/2 eq. 4.4 Roskam PDF page 1480 W / S 2.9417784 psf ρ 0.002376892 slug/ ft 3 C N max = 1.1 C L max eq. 4.6. Roskam PDF page 1480 C L max 1.229283635 clean Cl max neg -0.079637626 C N max 1.352211999 Cn max neg -0.087601388 V S 42.78513409 fps 25.34949883 knots Determination of design cruising speed (V c ) V C ≥ k c (GW/S) 1/2 kts eq. 4.7 Roskam PDF page 1480 kc 33.0000 V C 57 knots Determination of design diving speed (V D ) V D ≥ 1,25 V C eq. 4.8 Roskam PDF page 1481 V C 57 knots V D 70.75040501 knots Determination of design maneuvering speed (V A ) V A ≥ V S n lim 1/2 eq. 4.9 Roskam PDF page 1481 n lim 4.325799778 V S 42.78513409 fps 25.34949883 knots V A 88.98690549 fps 52.72329991 knots Determination of design limit load factor (n lim ) n lim pos ≥ 2.1 + {24000 / (W + 10000)} eq. 4.13. Roskam PDF page 1482 W TO 782.641023 lbs n lim pos 4.325799778 n lim neg 1.730319911
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Transcript of Lampiran N-V Diagram
LAMPIRAN Analisis dan Perhitungan n-V diagram
Determination of +1g stall speed (VS)
VS = {2(GW/S) / CN max}1/2eq. 4.4 Roskam PDF page 1480
W / S2.9417784psf
0.002376892slug/ft3
CN max = 1.1 CL maxeq. 4.6. Roskam PDF page 1480
CL max1.229283635cleanCl max neg-0.079637626
CN max1.352211999Cn max neg-0.087601388
VS42.78513409fps25.34949883knots
Determination of design cruising speed (Vc)
VC kc (GW/S)1/2 ktseq. 4.7 Roskam PDF page 1480
kc33.0000
VC57knots
Determination of design diving speed (VD)
VD 1,25 VCeq. 4.8 Roskam PDF page 1481
VC57knots
VD70.75040501knots
Determination of design maneuvering speed (VA)
VA VS nlim1/2eq. 4.9 Roskam PDF page 1481
nlim4.325799778
VS42.78513409fps25.34949883knots
VA88.98690549fps52.72329991knots
Determination of design limit load factor (nlim)
nlim pos 2.1 + {24000 / (W + 10000)}eq. 4.13. Roskam PDF page 1482
WTO782.641023lbs
nlim pos4.325799778
nlim neg1.730319911
Construction of gust load factor lines
Gust line VC
Ude50fps0 < h < 20,000 ft
Gust line VD
Ude25fps0 < h < 20,000 ft
Gust line VD
Ude25fps0 < h < 20,000 ft
nlim = 1 + (Kg Ude V CL ) / 498 (GW/S)eq. 4.16 Roskam PDF page 1482
Kg = 0.88 g / (5.3 + g)eq. 4.17 Roskam PDF page 1482
g = 2(GW/S) / c g CLeq.4.18 Roskam PDF page 1482
W/S2.9417784psf
0.002376892slugs/ft3
c4.716ft
g32.809ft/s2
CL7rad-1
g2.285418562
Kg0.265136105
h492.125985ft
VCnlimnlim negVDnlimnlim neg
2.0001.1680.8320.0001.0001.000
15.6502.314-0.31417.6881.3780.622
29.3003.460-1.46035.3751.7560.244
42.9504.605-2.60553.0632.134-0.134
56.6005.751-3.75170.7502.513-0.513
nVs ( fps)Vs ( knots)nVs ( fps)Vs ( knots)
000000
0.530.2536584517.92480252-0.275.1752348344.5401088
142.7851340925.34949883-0.4106.313836762.98922593
1.552.4008735531.04666869-0.6130.207326277.14573142
260.507316935.84960505-0.8150.350469789.0802176
2.567.6492368740.08107693-1168.096935399.594711
4.32579977888.9869054952.72329991
Tabel Gust load
xyxy
0101
33.00005.75114572133-0.997886871
0101
572.51253662456.60032401-3.751145721
0101
70.750405012.51253662470.75040501-0.512536624
335.75114572133-0.997886871
56.600324012.51253662456.60032401-3.751145721
70.750405012.51253662470.75040501-0.512536624
