def test_solver_cl(self, flying_wing_winglets):
solver = wl.WingSolver(model=flying_wing_winglets,
altitude=ALTITUDE,
mach=MACH)
problem = solver.solve_cl(cl=CL)
results = dict(CDi=problem.CDi,
CL=problem.CL,
CY=problem.CY,
Cm=problem.Cm)
expected = {
"CDi": 0.005320054099686794,
"CL": 0.4500048433740413,
"CY": 1.794018700567938e-18,
"Cm": -51.88601630585104,
}
assert np.isclose(CL,
results["CL"],
rtol=solver.TOL_CL,
atol=solver.TOL_CL)
assert expected == results
def test_solver_draw(self, flying_wing):
solver = wl.WingSolver(model=flying_wing, altitude=ALTITUDE, mach=MACH)
problem = solver.solve_alpha(alpha=5.0)
problem.draw()
def _create_solver(self, model):
"""Create solver at the operational point.
Parameters
----------
model : winglets.FlyingWing
Returns
-------
solver : winglets.WingSolver
"""
_altitude = self.operation_point[ALTITUDE]
_mach = self.operation_point[MACH]
solver = wl.WingSolver(model=model, altitude=_altitude, mach=_mach)
return solver
def test_solver_alpha(self, flying_wing):
solver = wl.WingSolver(model=flying_wing, altitude=ALTITUDE, mach=MACH)
problem = solver.solve_alpha(alpha=ALPHA)
results = dict(CDi=problem.CDi,
CL=problem.CL,
CY=problem.CY,
Cm=problem.Cm)
expected = {
"CDi": 0.0007621840201544735,
"CL": 0.17823297687249956,
"CY": 1.8207861772476683e-18,
"Cm": -25.046729432809073,
}
assert expected == results
def test_solver_cl(self, flying_wing):
solver = wl.WingSolver(model=flying_wing, altitude=ALTITUDE, mach=MACH)
problem = solver.solve_cl(cl=CL)
results = dict(CDi=problem.CDi,
CL=problem.CL,
CY=problem.CY,
Cm=problem.Cm)
expected = {
"CDi": 0.005628661627242771,
"CL": 0.45000738453912104,
"CY": 2.271288523678805e-18,
"Cm": -51.54848089843833,
}
assert expected == results
def test_solver_alpha(self, flying_wing_winglets):
solver = wl.WingSolver(model=flying_wing_winglets,
altitude=ALTITUDE,
mach=MACH)
problem = solver.solve_alpha(alpha=ALPHA)
results = dict(CDi=problem.CDi,
CL=problem.CL,
CY=problem.CY,
Cm=problem.Cm)
expected = {
"CDi": 0.0007211988080825468,
"CL": 0.17779760329872044,
"CY": 1.9875634350427656e-19,
"Cm": -24.98033280975764,
}
assert expected == results