/
performance_modeling_output.txt
110 lines (86 loc) · 2.71 KB
/
performance_modeling_output.txt
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Cost
----
Wfuel[0]
Constraints
-----------
Mission
"fuel constraints":
Wfuel[:-1] ≥ Wfuel[1:] + Wburn[:-1]
Wfuel[3] ≥ Wburn[3]
FlightSegment
AircraftP
Wburn[:] ≥ 0.1·D[:]
Aircraft.W + Wfuel[:] ≤ 0.5·rho[:]·CL[:]·S·V[:]²
"performance":
WingAero
D[:] ≥ 0.5·rho[:]·V[:]²·CD[:]·S
Re[:] = rho[:]·V[:]·c/mu[:]
CD[:] ≥ 0.074/Re[:]^0.2 + CL[:]²/π/A/e[:]
FlightState
(no constraints)
Aircraft
Aircraft.W ≥ Aircraft.Fuselage.W + Aircraft.Wing.W
Fuselage
(no constraints)
Wing
c = (S/A)^0.5
Aircraft.Wing.W ≥ S·Aircraft.Wing.rho
Optimal Cost
------------
1.091
Free Variables
--------------
| Aircraft
W : 144.1 [lbf] weight
| Aircraft.Wing
S : 44.14 [ft²] surface area
W : 44.14 [lbf] weight
c : 1.279 [ft] mean chord
| Mission.FlightSegment.AircraftP
Wburn : [ 0.274 0.273 0.272 0.272 ] [lbf] segment fuel burn
Wfuel : [ 1.09 0.817 0.544 0.272 ] [lbf] fuel weight
| Mission.FlightSegment.AircraftP.WingAero
D : [ 2.74 2.73 2.72 2.72 ] [lbf] drag force
Variable Sensitivities
----------------------
| Aircraft.Fuselage
W : +0.97 weight
| Aircraft.Wing
A : -0.67 aspect ratio
rho : +0.43 areal density
Next Most Sensitive Variables
-----------------------------
| Mission.FlightSegment.AircraftP.WingAero
e : [ -0.18 -0.18 -0.18 -0.18 ] Oswald efficiency
| Mission.FlightSegment.FlightState
V : [ -0.22 -0.21 -0.21 -0.21 ] true airspeed
rho : [ -0.12 -0.11 -0.11 -0.11 ] air density
Most Sensitive Constraints
--------------------------
| Aircraft
+1.4 : .W ≥ .Fuselage.W + .Wing.W
| Mission
+1 : Wfuel[0] ≥ Wfuel[1] + Wburn[0]
+0.75 : Wfuel[1] ≥ Wfuel[2] + Wburn[1]
+0.5 : Wfuel[2] ≥ Wfuel[3] + Wburn[2]
| Aircraft.Wing
+0.43 : .W ≥ S·.rho
Insensitive Constraints |below +1e-05|
--------------------------------------
(none)
Solution Diff (for selected variables)
======================================
(argument is the baseline solution)
Constraint Differences
**********************
@@ -31,3 +31,4 @@
Wing
c = (S/A)^0.5
Aircraft.Wing.W ≥ S·Aircraft.Wing.rho
+ Wburn[:] ≥ 0.2·D[:]
**********************
Relative Differences |above 1%|
-------------------------------
Wburn : [ +102.1% +101.6% +101.1% +100.5% ] segment fuel burn
Wfuel : [ +101.3% +101.1% +100.8% +100.5% ] fuel weight
D : [ +1.1% - - - ] drag force