# ---------------------------------------------------------------------------------------------------------------------- # IMPORT # ---------------------------------------------------------------------------------------------------------------------- # RCAIDE imports import RCAIDE from RCAIDE.Framework.Core import Units # ---------------------------------------------------------------------- # Set Up # ---------------------------------------------------------------------- def setup(analyses): # ------------------------------------------------------------------ # Base Mission # ------------------------------------------------------------------ mission = mission_setup(analyses) missions = RCAIDE.Framework.Mission.Missions() mission.tag = 'base_mission' missions.append(mission) return missions # ---------------------------------------------------------------------- # Mission Setup # ---------------------------------------------------------------------- def mission_setup(analyses): """This function defines the baseline mission that will be flown by the aircraft in order to compute performance.""" # ------------------------------------------------------------------ # Initialize the Mission # ------------------------------------------------------------------ mission = RCAIDE.Framework.Mission.Sequential_Segments() mission.tag = 'the_mission' Segments = RCAIDE.Framework.Mission.Segments base_segment = Segments.Segment() base_segment.state.numerics.solver.type = 'root_finder' # ------------------------------------------------------------------------------------------------------------------------------------ # Takeoff Roll # ------------------------------------------------------------------------------------------------------------------------------------ segment = Segments.Ground.Takeoff(base_segment) segment.tag = "Takeoff" segment.analyses.extend( analyses.takeoff ) segment.velocity_start = 10.* Units.knots segment.velocity_end = 125.0 * Units['m/s'] segment.friction_coefficient = 0.04 segment.altitude = 0.0 mission.append_segment(segment) # ------------------------------------------------------------------ # First Climb Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Climb.Constant_Speed_Constant_Rate(base_segment) segment.tag = "climb_1" segment.analyses.extend( analyses.takeoff ) segment.altitude_start = 0.0 * Units.km segment.altitude_end = 3.0 * Units.km segment.air_speed = 125.0 * Units['m/s'] segment.climb_rate = 6.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Second Climb Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Climb.Constant_Speed_Constant_Rate(base_segment) segment.tag = "climb_2" segment.analyses.extend( analyses.cruise ) segment.altitude_end = 8.0 * Units.km segment.air_speed = 190.0 * Units['m/s'] segment.climb_rate = 6.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Third Climb Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Climb.Constant_Speed_Constant_Rate(base_segment) segment.tag = "climb_3" segment.analyses.extend( analyses.cruise ) segment.altitude_end = 10.5 * Units.km segment.air_speed = 226.0 * Units['m/s'] segment.climb_rate = 3.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Cruise Segment: Constant Speed Constant Altitude # ------------------------------------------------------------------ segment = Segments.Cruise.Constant_Speed_Constant_Altitude(base_segment) segment.tag = "cruise" segment.analyses.extend( analyses.cruise ) segment.altitude = 10.668 * Units.km segment.air_speed = 230.412 * Units['m/s'] segment.distance = 1000 * Units.nmi # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # First Descent Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Descent.Constant_Speed_Constant_Rate(base_segment) segment.tag = "descent_1" segment.analyses.extend( analyses.descent ) segment.altitude_start = 10.5 * Units.km segment.altitude_end = 6.0 * Units.km segment.air_speed = 220.0 * Units['m/s'] segment.descent_rate = 4.5 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Second Descent Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Descent.Linear_Speed_Constant_Rate(base_segment) segment.tag = "descent_2" segment.analyses.extend( analyses.descent ) segment.altitude_end = 6.0 * Units.km segment.altitude_end = 170.0 * Units['m/s'] segment.descent_rate = 5.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Third Descent Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Descent.Constant_Speed_Constant_Rate(base_segment) segment.tag = "descent_3" segment.analyses.extend( analyses.landing ) segment.altitude_end = 4.0 * Units.km segment.air_speed = 170.0 * Units['m/s'] segment.descent_rate = 5.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Fourth Descent Segment: Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Descent.Constant_Speed_Constant_Rate(base_segment) segment.tag = "descent_4" segment.analyses.extend( analyses.landing ) segment.altitude_end = 2.0 * Units.km segment.air_speed = 150.0 * Units['m/s'] segment.descent_rate = 5.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------ # Fifth Descent Segment:Constant Speed Constant Rate # ------------------------------------------------------------------ segment = Segments.Descent.Constant_Speed_Constant_Rate(base_segment) segment.tag = "descent_5" segment.analyses.extend( analyses.landing ) segment.altitude_end = 0.0 * Units.km segment.air_speed = 145.0 * Units['m/s'] segment.descent_rate = 3.0 * Units['m/s'] # define flight dynamics to model segment.flight_dynamics.force_x = True segment.flight_dynamics.force_z = True # define flight controls segment.assigned_control_variables.throttle.active = True segment.assigned_control_variables.throttle.assigned_propulsors = [['starboard_propulsor','port_propulsor']] segment.assigned_control_variables.pitch_angle.active = True mission.append_segment(segment) # ------------------------------------------------------------------------------------------------------------------------------------ # Landing Roll # ------------------------------------------------------------------------------------------------------------------------------------ segment = Segments.Ground.Landing(base_segment) segment.tag = "landing" segment.analyses.extend( analyses.landing ) segment.velocity_end = 10 * Units.knots segment.friction_coefficient = 0.4 segment.altitude = 0.0 segment.assigned_control_variables.elapsed_time.active = True segment.assigned_control_variables.elapsed_time.initial_guess_values = [[30.]] mission.append_segment(segment) # ------------------------------------------------------------------ # Mission definition complete # ------------------------------------------------------------------ return mission