def get_friction_drag_FW(aircraft,velocity,altitude):
refArea = aircraft.wing.area
frictionDrag = Friction(refArea)
frictionDrag.set_flight_conditions(velocity,altitude)
items = DragList()
items.name = 'Airframe'
items.add_item( frictionDrag.analyze_wing(aircraft.wing,'main wing') )
return items
def get_friction_drag(self,velocity,altitude):
"""
Calculates friction drag of an aircraft using Friction class
at given velocity and altitude.
Returns
-------
items : DragList
list of the drag components with drag coefficients used for
friction drag calculation (Body, wing, empennage)
"""
frictionDrag = Friction(self.refArea)
frictionDrag.set_flight_conditions(velocity,altitude)
items = DragList()
items.add_item( frictionDrag.analyze_wing(self.ac.wing,'main wing') )
self.aircraftDrag.friction = items
return items
def get_items_drag(self,items):
itemsNew = DragList()
for item in items:
item = self.get_item_drag(item)
itemsNew.add_item(item)
return itemsNew
