RCAIDE.Library.Attributes.Propellants.Jet_A1

Jet_A1#

class Jet_A1(*args, **kwarg)[source]#

Bases: Propellant

A class representing Jet A-1 aviation kerosene fuel properties and emissions characteristics. Similar to Jet A but with a lower freezing point for international operations.

tag#

Identifier for the propellant (‘Jet_A1’)

Type:

str

reactant#

Oxidizer used for combustion (‘O2’)

Type:

str

density#

Fuel density in kg/m³ (804.0)

Type:

float

specific_energy#

Specific energy content in J/kg (43.15e6)

Type:

float

energy_density#

Energy density in J/m³ (34692.6e6)

Type:

float

lower_heating_value#

Lower heating value in J/kg (43.24e6)

Type:

float

max_mass_fraction#

Maximum fuel-to-oxidizer mass ratios

  • Airfloat

    Maximum mass fraction with air (0.0633)

  • O2float

    Maximum mass fraction with pure oxygen (0.3022)

Type:

Data

temperatures#

Critical temperatures in K

  • flashfloat

    Flash point (311.15)

  • autoignitionfloat

    Autoignition temperature (483.15)

  • freezefloat

    Freezing point (226.15)

  • boilingfloat

    Boiling point (0.0)

Type:

Data

emission_indices#

Emission indices in kg/kg fuel

  • Productionfloat

    CO2 production rate (0.4656)

  • CO2float

    Carbon dioxide (3.16)

  • H2Ofloat

    Water vapor (1.34)

  • SO2float

    Sulfur dioxide (0.0012)

  • NOxfloat

    Nitrogen oxides (0.01514)

  • Sootfloat

    Particulate matter (0.0012)

Type:

Data

global_warming_potential_100#

100-year global warming potentials

  • CO2float

    Carbon dioxide (1)

  • H2Ofloat

    Water vapor (0.06)

  • SO2float

    Sulfur dioxide (-226)

  • NOxfloat

    Nitrogen oxides (52)

  • Sootfloat

    Particulate matter (1166)

  • Contrailsfloat

    Contrail formation (11)

Type:

Data

Notes

This class implements properties for Jet A-1 aviation kerosene, the international variant of Jet A with enhanced cold-weather performance. Properties are specified at standard conditions (15°C, 1 atm).

Definitions

‘Flash Point’

Lowest temperature at which fuel vapors will ignite

‘Autoignition Temperature’

Temperature at which fuel will ignite without external ignition source

‘Freeze Point’

Temperature at which fuel begins to form solid crystals

Major Assumptions

  • Properties are for standard temperature and pressure conditions

  • Surrogate model uses three-component representation

  • Detailed model includes complex hydrocarbon mixture

  • Emission indices are for typical aircraft cruise conditions

References

[1] Randall C. Boehm, Zhibin Yang, David C. Bell, John Feldhausen, Joshua S. Heyne, “Lower heating value of jet fuel from hydrocarbon class concentration data and thermo-chemical reference data: An uncertainty quantification,” Fuel, Volume 311, 2022, 122542, ISSN 0016-2361, https://doi.org/10.1016/j.fuel.2021.122542. [2] NASA’s Engine Performance Program (NEPP)