RCAIDE.Library.Attributes.Propellants.JP7

JP7

class JP7(*args, **kwarg)

Bases: Propellant

A class representing JP-7 high thermal stability jet fuel properties. This specialized fuel was developed for high-speed aircraft operating at elevated temperatures.

tag

Identifier for the propellant (‘JP7’)

Type:

str

reactant

Oxidizer used for combustion (‘O2’)

Type:

str

density

Fuel density in kg/m³ (803.0)

Type:

float

specific_energy

Specific energy content in J/kg (43.50e6)

Type:

float

energy_density

Energy density in J/m³ (34930.5e6)

Type:

float

stoichiometric_fuel_to_air

Stoichiometric fuel-to-air ratio (0.0674)

Type:

float

temperatures

Critical temperatures in K

• flashfloat

  Flash point (333.15)

• autoignitionfloat

  Autoignition temperature (555.15)

• freezefloat

  Freezing point (514.15)

Type:

Data

Notes

JP-7 is a specialized jet fuel developed for the SR-71 Blackbird and similar high-speed aircraft. It features high thermal stability and low volatility for operation at elevated temperatures.

Definitions

‘Flash Point’

Lowest temperature at which fuel vapors will ignite (60°C, significantly higher than conventional jet fuels)

‘Thermal Stability’

Resistance to thermal decomposition at elevated temperatures

‘Stoichiometric Fuel-to-Air Ratio’

Ideal fuel-to-air mass ratio for complete combustion

Major Assumptions

• Properties are for standard temperature and pressure conditions (15C, 1atm)

References

[1] Roberts, K. (2008). ANALYSIS AND DESIGN OF A HYPERSONIC SCRAMJET ENGINE WITH A STARTING MACH NUMBER OF 4.00 (thesis). UTA. University of Texas at Austin. Retrieved December 30, 2024, from https://arc.uta.edu/publications/td_files/Kristen%20Roberts%20MS.pdf.