sensitivity_cd_assumptions_layer1 Namespace Reference

Functions
Dict[str, Any]	_strip_none_fp (Dict[str, Any] fp)
None	_apply_throat_mm2 (Any cfg, float mm2)
Tuple[float, float, float, float]	_apply_cd_caps (Any cfg, float cd_o_inf, float cd_f_inf)
Tuple[Any, Dict[str, Any], Dict[str, Any]]	_build_req_and_cfg (Path base_cfg_path, *, float throat_lo_mm2, float throat_hi_mm2, float p_o_lo, float p_o_hi, float p_f_lo, float p_f_hi, float max_lox_psi, float max_fuel_psi)
None	main ()

Variables
	ROOT = Path(__file__).resolve().parents[1]
float	F_TARGET = 8000.0
float	MR_TARGET = 3.5
float	_RATIO_CD_MIN_INF_O = 0.15 / 0.40
float	_RATIO_CD_MIN_INF_F = 0.2 / 0.30
list	CASES

Detailed Description

Cd **design-assumption** sensitivity (Layer‑1): vary ``Cd_inf`` / ``Cd_min`` only.

Does **not** change injector equations (``engine/core/injectors/impinging.py`` unchanged).
Does **not** commit new Cd defaults — cases override config in-memory before ``run_layer1_optimization``.

Cases (assume ``Cd_*`` applies to oxidizer vs fuel discharge caps::

  A baseline: Cd_O = 0.40, Cd_F = 0.30
  B:          Cd_O = 0.60, Cd_F = 0.60
  C:          Cd_O = 0.70, Cd_F = 0.70
  D:          Cd_O = 0.60, Cd_F = 0.70

``Cd_min`` per stream preserves the oxidizer:fuel baseline **ratio**
``Cd_min / Cd_inf`` from ``configs/impinging_lox_ch4_8000N.yaml`` (0.15/0.40 and 0.2/0.3).

Layer‑1 targets (via requirements):

- Thrust target 8000 N, MR target 3.5  
- Impinging R hinge [0.93, 1.07]  
- ΔP_inj/Pc hinge **both streams** [0.15, 0.40]  
- Tank pressures co‑optimized within CLI bands  
- Default throat band: Region B [2520, 2600] mm² ; optional ±12.5% around YAML ``A_throat``

Outputs one summary CSV plus per-console case blocks.

Example::

  python scripts/sensitivity_cd_assumptions_layer1.py \\
    --output-csv output/sensitivity_cd_layer1_summary.csv

Function Documentation

_apply_cd_caps()

Tuple[float, float, float, float] sensitivity_cd_assumptions_layer1._apply_cd_caps ( Any cfg, float cd_o_inf, float cd_f_inf )

protected

Definition at line 83 of file sensitivity_cd_assumptions_layer1.py.

Referenced by main().

_apply_throat_mm2()

None sensitivity_cd_assumptions_layer1._apply_throat_mm2 ( Any cfg, float mm2 )

protected

Definition at line 71 of file sensitivity_cd_assumptions_layer1.py.

References max.

Referenced by _build_req_and_cfg().

_build_req_and_cfg()

Tuple[Any, Dict[str, Any], Dict[str, Any]] sensitivity_cd_assumptions_layer1._build_req_and_cfg ( Path base_cfg_path, * , float throat_lo_mm2, float throat_hi_mm2, float p_o_lo, float p_o_hi, float p_f_lo, float p_f_hi, float max_lox_psi, float max_fuel_psi )

protected

Definition at line 93 of file sensitivity_cd_assumptions_layer1.py.

References _apply_throat_mm2(), _strip_none_fp(), and min.

Referenced by main().

_strip_none_fp()

Dict[str, Any] sensitivity_cd_assumptions_layer1._strip_none_fp ( Dict[str, Any] fp )

protected

Definition at line 67 of file sensitivity_cd_assumptions_layer1.py.

Referenced by _build_req_and_cfg().

main()

None sensitivity_cd_assumptions_layer1.main

(

)

Definition at line 170 of file sensitivity_cd_assumptions_layer1.py.

References _apply_cd_caps(), _build_req_and_cfg(), format(), and main().

Referenced by main().

Variable Documentation

_RATIO_CD_MIN_INF_F

float sensitivity_cd_assumptions_layer1._RATIO_CD_MIN_INF_F = 0.2 / 0.30

protected

Definition at line 57 of file sensitivity_cd_assumptions_layer1.py.

_RATIO_CD_MIN_INF_O

float sensitivity_cd_assumptions_layer1._RATIO_CD_MIN_INF_O = 0.15 / 0.40

protected

Definition at line 56 of file sensitivity_cd_assumptions_layer1.py.

CASES

list sensitivity_cd_assumptions_layer1.CASES

Initial value:

=  [
    ("A_baseline", 0.40, 0.30),
    ("B", 0.60, 0.60),
    ("C", 0.70, 0.70),
    ("D", 0.60, 0.70),
]

Definition at line 59 of file sensitivity_cd_assumptions_layer1.py.

F_TARGET

float sensitivity_cd_assumptions_layer1.F_TARGET = 8000.0

Definition at line 53 of file sensitivity_cd_assumptions_layer1.py.

MR_TARGET

float sensitivity_cd_assumptions_layer1.MR_TARGET = 3.5

Definition at line 54 of file sensitivity_cd_assumptions_layer1.py.

ROOT

sensitivity_cd_assumptions_layer1.ROOT = Path(__file__).resolve().parents[1]

Definition at line 46 of file sensitivity_cd_assumptions_layer1.py.