Source code for RCAIDE.Framework.Mission.Segments.Descent.Linear_Mach_Constant_Rate
# RCAIDE/Framework/Analyses/Mission/Segments/Descent/Linear_Mach_Constant_Rate.py
#
#
# Created: Jul 2023, M. Clarke
# ----------------------------------------------------------------------------------------------------------------------
# IMPORT
# ----------------------------------------------------------------------------------------------------------------------
from RCAIDE.Framework.Core import Units
from RCAIDE.Framework.Mission.Segments.Evaluate import Evaluate
from RCAIDE.Library.Mission import Common,Segments
# ----------------------------------------------------------------------------------------------------------------------
# Linear_Mach_Constant_Rate
# ----------------------------------------------------------------------------------------------------------------------
[docs]
class Linear_Mach_Constant_Rate(Evaluate):
""" Change Mach numbers during a descent while descending at a constant rate. The Mach number changes linearly
throughout the descent.
Assumptions:
None
Source:
None
"""
def __defaults__(self):
""" This sets the default solver flow. Anything in here can be modified after initializing a segment.
Assumptions:
None
Source:
N/A
Inputs:
None
Outputs:
None
Properties Used:
None
"""
# --------------------------------------------------------------------------------------------------------------
# User Inputs
# --------------------------------------------------------------------------------------------------------------
self.altitude_start = None # Optional
self.altitude_end = 10. * Units.km
self.descent_rate = 3. * Units.m / Units.s
self.mach_number_end = 0.7
self.mach_number_start = None
self.true_course = 0.0 * Units.degrees
# --------------------------------------------------------------------------------------------------------------
# Mission specific processes
# --------------------------------------------------------------------------------------------------------------
initialize = self.process.initialize
initialize.differentials_altitude = Common.Initialize.differentials_altitude
initialize.conditions = Segments.Descent.Linear_Mach_Constant_Rate.initialize_conditions
iterate = self.process.iterate
iterate.unknowns.mission = Common.Unpack_Unknowns.orientation
iterate.unknowns.controls = Common.Unpack_Unknowns.control_surfaces
iterate.residuals.flight_dynamics = Common.Residuals.flight_dynamics
return
