Source code for RCAIDE.Library.Methods.Powertrain.Systems.compute_payload_power_draw
# RCAIDE/Library/Methods/Powertrain/Systems/compute_payload_power_draw.py
#
# Created: Jul 2024, RCAIDE Team
# ----------------------------------------------------------------------------------------------------------------------
# IMPORT
# ----------------------------------------------------------------------------------------------------------------------
# package imports
[docs]
def compute_payload_power_draw(payload, bus, conditions):
"""
Computes the power draw of a payload component on an electrical bus.
Parameters
----------
payload : RCAIDE.Library.Components.Systems.Payload
Payload component with the following attributes:
- tag : str
Identifier for the payload
- power_draw : float
Power required by the payload [W]
bus : RCAIDE.Library.Components.Systems.Electrical_Bus
Electrical bus component with the following attributes:
- tag : str
Identifier for the electrical bus
- power_split_ratio : float
Ratio of power allocation to this bus
- efficiency : float
Efficiency of the bus [0-1]
conditions : RCAIDE.Framework.Mission.Common.Conditions
Flight conditions with:
- energy : dict
Energy conditions indexed by component tag
- [bus.tag] : Data
Bus-specific conditions
- [payload.tag] : Data
Payload-specific conditions
- power : numpy.ndarray
Power draw of the payload [W]
- power_draw : numpy.ndarray
Total power draw on the bus [W]
Returns
-------
None
Notes
-----
This function calculates the power draw of a payload component on an electrical bus
and updates the total power draw on the bus. The power draw is adjusted by the
bus power split ratio and efficiency.
**Major Assumptions**
* Constant payload power draw
* Constant bus efficiency
* Power draw is independent of flight conditions
See Also
--------
RCAIDE.Library.Methods.Powertrain.Systems.compute_avionics_power_draw
"""
bus_conditions = conditions.energy[bus.tag]
payload_conditions = bus_conditions[payload.tag]
payload_conditions.power[:,0] = payload.power_draw
bus_conditions.power_draw += payload_conditions.power*bus.power_split_ratio /bus.efficiency
return
