andrew/physicalCombinatorics
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I love how stupid this project is

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si units and redefining speed metric as thrust/weight ratio
This commit is contained in:
Andrew Simonson
2026-03-04 16:30:09 -06:00
parent 216879bdd5
commit 00cc8dd9ef
19 changed files with 494 additions and 341 deletions
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42
src/physcom/engine/constraint_resolver.py
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@@ -41,7 +41,6 @@ class ConstraintResolver:
self._check_requires_vs_excludes(all_deps, result)
self._check_mutual_exclusion(all_deps, result)
self._check_range_incompatibility(all_deps, result)
self._check_power_density(combination, result)
self._check_energy_density(combination, result)
self._check_unmet_requirements(all_deps, result)
@@ -125,35 +124,6 @@ class ConstraintResolver:
f"but {max_name} limits {key} <= {max_val}"
)
def _check_power_density(
self, combination: Combination, result: ConstraintResult
) -> None:
"""Rule 4: If power source W/kg << platform required W/kg → warn/block."""
density_provided: list[tuple[str, float]] = []
density_required: list[tuple[str, float]] = []
for entity in combination.entities:
for dep in entity.dependencies:
if dep.key == "power_density_w_kg" and dep.constraint_type == "provides":
density_provided.append((entity.name, float(dep.value)))
elif dep.key == "power_density_required_w_kg" and dep.constraint_type == "range_min":
density_required.append((entity.name, float(dep.value)))
for req_name, req_density in density_required:
for prov_name, prov_density in density_provided:
if prov_density < req_density * 0.01:
result.violations.append(
f"{prov_name} provides {prov_density} W/kg but "
f"{req_name} requires {req_density} W/kg "
f"(power density deficit > 100x)"
)
elif prov_density < req_density:
result.warnings.append(
f"{prov_name} provides {prov_density} W/kg but "
f"{req_name} requires {req_density} W/kg "
f"(under-powered)"
)
def _check_energy_density(
self, combination: Combination, result: ConstraintResult
) -> None:
@@ -166,9 +136,9 @@ class ConstraintResolver:
for entity in combination.entities:
for dep in entity.dependencies:
if dep.key == "energy_density_wh_kg" and dep.constraint_type == "provides":
if dep.key == "energy_density" and dep.constraint_type == "provides":
density_provided.append((entity.name, float(dep.value)))
elif dep.key == "energy_density_wh_kg" and dep.constraint_type == "range_min":
elif dep.key == "energy_density" and dep.constraint_type == "range_min":
density_required.append((entity.name, float(dep.value)))
for req_name, req_density in density_required:
@@ -177,14 +147,14 @@ class ConstraintResolver:
for prov_name, prov_density in density_provided:
if prov_density < req_density * 0.25:
result.violations.append(
f"{prov_name} provides {prov_density:.0f} Wh/kg but "
f"{req_name} requires {req_density:.0f} Wh/kg "
f"{prov_name} provides {prov_density:.0f} J/kg but "
f"{req_name} requires {req_density:.0f} J/kg "
f"(energy density deficit > 4x)"
)
elif prov_density < req_density:
result.warnings.append(
f"{prov_name} provides {prov_density:.0f} Wh/kg but "
f"{req_name} requires {req_density:.0f} Wh/kg "
f"{prov_name} provides {prov_density:.0f} J/kg but "
f"{req_name} requires {req_density:.0f} J/kg "
f"(under-density)"
)