2  🪬 Aircraft and engines

The prop package in openap allows users to obtain aircraft and engine-related data quickly. We will demonstrate usage through the following example.

2.1 Supported aircraft type codes

First, we need to import the prop package from the OpenAP library.

from openap import prop
from pprint import pprint

We can get a list of available aircraft openap.prop.available_aircraft() function:

avaiable_aircraft = prop.available_aircraft()

print(f"Supports {len(avaiable_aircraft)} aircraft types")
print(avaiable_aircraft)

Supports 36 aircraft types
['a19n', 'a20n', 'a21n', 'a318', 'a319', 'a320', 'a321', 'a332', 'a333', 'a343', 'a359', 'a388', 'b37m', 'b38m', 'b39m', 'b3xm', 'b734', 'b737', 'b738', 'b739', 'b744', 'b748', 'b752', 'b763', 'b772', 'b773', 'b77w', 'b788', 'b789', 'c550', 'e145', 'e170', 'e190', 'e195', 'e75l', 'glf6']

2.2 Aircraft data

We can get the parameters for one aircraft using openap.prop.aircraft() function:

aircraft = prop.aircraft("A320")
pprint(aircraft)

{'aircraft': 'Airbus A320',
 'ceiling': 12500,
 'cruise': {'height': 11000, 'mach': 0.78},
 'drag': {'cd0': 0.018, 'e': 0.799, 'gears': 0.017, 'k': 0.039},
 'engine': {'default': 'CFM56-5B4',
            'mount': 'wing',
            'number': 2,
            'options': {'A320-111': 'CFM56-5-A1',
                        'A320-211': 'CFM56-5-A1',
                        'A320-212': 'CFM56-5A3',
                        'A320-214': 'CFM56-5B4',
                        'A320-215': 'CFM56-5B5',
                        'A320-216': 'CFM56-5B6',
                        'A320-231': 'V2500-A1',
                        'A320-232': 'V2527-A5',
                        'A320-233': 'V2527E-A5'},
            'type': 'turbofan'},
 'flaps': {'Sf/S': 0.17,
           'area': 21.1,
           'bf/b': 0.78,
           'cf/c': 0.176,
           'lambda_f': 0.9,
           'type': 'single-slotted'},
 'fuel': {'engine': 'CFM56-5B4/P', 'fuel_coef': 2.65942225},
 'fuselage': {'height': 4.14, 'length': 37.57, 'width': 3.95},
 'limits': {'MFC': 24210,
            'MLW': 66000,
            'MMO': 0.82,
            'MTOW': 78000,
            'OEW': 42600,
            'VMO': 350,
            'ceiling': 12500},
 'mfc': 24210,
 'mlw': 66000,
 'mmo': 0.82,
 'mtow': 78000,
 'oew': 42600,
 'pax': {'high': 170, 'low': 140, 'max': 180},
 'vmo': 350,
 'wing': {'area': 124, 'mac': 4.1935, 'span': 35.8, 'sweep': 25, 't/c': None}}

2.3 Engine data

The engine data can be obtained with openap.prop.engine() function:

engine = prop.engine("CFM56-5B4")
engine

{'uid': '2CM014',
 'name': 'CFM56-5B4',
 'manufacturer': 'CFM International',
 'type': 'TF',
 'bpr': 5.9,
 'pr': 27.1,
 'max_thrust': 117900,
 'ei_hc_to': 0.1,
 'ei_hc_co': 0.1,
 'ei_hc_app': 0.13,
 'ei_hc_idl': 3.87,
 'ei_co_to': 0.5,
 'ei_co_co': 0.5,
 'ei_co_app': 2.33,
 'ei_co_idl': 31.9,
 'ei_nox_to': 28.7,
 'ei_nox_co': 23.3,
 'ei_nox_app': 10.0,
 'ei_nox_idl': 4.3,
 'ff_to': 1.166,
 'ff_co': 0.961,
 'ff_app': 0.326,
 'ff_idl': 0.107,
 'fuel_lto': 421.0,
 'fuel_c3': 0.0468598,
 'fuel_c2': 0.202282,
 'fuel_c1': 0.871899,
 'fuel_a': 0.587855,
 'fuel_b': 0.417561,
 'cruise_thrust': 22241.0,
 'cruise_sfc': 0.0154,
 'cruise_mach': 0.8,
 'cruise_alt': 35000.0,
 'fuel_ch': 5.2e-07}