def pressure(self):
"""
Returns the pressure, in Pascals.
"""
if self.method.lower() == "isa":
return pressure_isa(self.altitude)
elif self.method.lower() == "differentiable":
return pressure_differentiable(self.altitude)
else:
raise ValueError("Bad value of 'type'!")
34e3,
45e3,
49e3,
53e3,
69e3,
73e3,
77e3,
83e3,
87e3,
] + list(87e3 + np.geomspace(5e3, 2000e3, 11)) +
list(0 - np.geomspace(5e3, 5000e3, 11)))
altitude_knot_points = np.sort(np.unique(altitude_knot_points))
temperature_knot_points = temperature_isa(altitude_knot_points)
pressure_knot_points = pressure_isa(altitude_knot_points)
# creates interpolated model for temperature and pressure
interpolated_temperature = InterpolatedModel(
x_data_coordinates=altitude_knot_points,
y_data_structured=temperature_knot_points,
)
interpolated_log_pressure = InterpolatedModel(
x_data_coordinates=altitude_knot_points,
y_data_structured=np.log(pressure_knot_points),
)
def pressure_differentiable(altitude):
"""
Computes the pressure at a given altitude with a differentiable model.