vulcan::propulsion::air_breathing Namespace Reference

Functions
template<typename Scalar>
Scalar	fuel_flow_rate (const Scalar &thrust, const Scalar &TSFC)
	Calculates fuel flow rate from thrust and TSFC.
template<typename Scalar>
Scalar	breguet_range (const Scalar &velocity, const Scalar &TSFC, const Scalar &L_D, const Scalar &W0, const Scalar &W1)
	Calculates Breguet Range for jet aircraft.
template<typename Scalar>
Scalar	breguet_endurance (const Scalar &TSFC, const Scalar &L_D, const Scalar &W0, const Scalar &W1)
	Calculates Breguet Endurance for jet aircraft.

Function Documentation

breguet_endurance()

template<typename Scalar>

Scalar vulcan::propulsion::air_breathing::breguet_endurance	(	const Scalar &	TSFC,
		const Scalar &	L_D,
		const Scalar &	W0,
		const Scalar &	W1 )

Calculates Breguet Endurance for jet aircraft.

E = (1 / TSFC) * (L / D) * ln(W0 / W1)

Template Parameters

Scalar

Variable type

Parameters

TSFC	Thrust Specific Fuel Consumption [1/s]
L_D	Lift-to-Drag ratio
W0	Initial weight
W1	Final weight

Returns

Endurance time [s] (if TSFC is [1/s])

breguet_range()

template<typename Scalar>

Scalar vulcan::propulsion::air_breathing::breguet_range	(	const Scalar &	velocity,
		const Scalar &	TSFC,
		const Scalar &	L_D,
		const Scalar &	W0,
		const Scalar &	W1 )

Calculates Breguet Range for jet aircraft.

R = (V / TSFC) * (L / D) * ln(W0 / W1)

Note: For result in distance units (e.g. meters), TSFC must be in [1/s] (weight flow per thrust), or V/(TSFC*g) must be used if TSFC is mass-specific. This implementation follows the plan: (V/TSFC).

Template Parameters

Scalar

Variable type

Parameters

velocity	Flight velocity [m/s]
TSFC	Thrust Specific Fuel Consumption [1/s]
L_D	Lift-to-Drag ratio
W0	Initial weight
W1	Final weight

Returns

Range distance [m] (if TSFC is [1/s])

fuel_flow_rate()

template<typename Scalar>

Scalar vulcan::propulsion::air_breathing::fuel_flow_rate	(	const Scalar &	thrust,
		const Scalar &	TSFC )

Calculates fuel flow rate from thrust and TSFC.

mdot = TSFC * F

Note: Check unit consistency. If TSFC is [1/s] (weight specific), the result is weight flow [N/s]. If TSFC is [kg/(N*s)] (mass specific), the result is mass flow [kg/s].

Template Parameters

Scalar

Variable type

Parameters

thrust	Thrust force [N]
TSFC	Thrust Specific Fuel Consumption

Returns

Fuel flow rate