Reaction engines other than turbo-jets

1. Scope and Applicability

This PCR covers the factory-gate production of complete thrust-producing reaction engines classified as CPC 43133 that are not turbo-jets and are supplied as finished engines or motors. The foreground boundary begins with received materials and purchased components and includes fabrication, joining, precision cleaning, assembly, acceptance testing, and the shipping package applied at the manufacturing site.

Turbo-jets and turbo-propellers, piston aircraft engines, other gas turbines, separately supplied engine parts, aircraft or spacecraft integration, operational propellant carried for use, in-service maintenance, use-stage operation, launch or flight, and end-of-life are excluded. A dataset shall state the reaction-engine technology and propellant or working-fluid system; this label controls which conditional exchanges and tests apply without changing the canonical category.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.general-purpose-machinery.reaction-engines-other-than-turbo-jets
classification_refs	CPC 3.0: 43133, Reaction engines other than turbo-jets (exact)
covered_products	Complete non-turbojet reaction engines or motors supplied as finished thrust-producing units within CPC 43133
excluded_products	Turbo-jets; turbo-propellers; piston aircraft engines; stationary gas turbines; separately supplied parts; complete aircraft, spacecraft, missiles, or launch vehicles
representative_product	A finished, dry, acceptance-tested non-turbojet reaction engine at the manufacturing factory gate
production_route	Received material and component control; machining, forming or joining; precision cleaning; assembly; route-specific acceptance testing; protective shipping packaging
market_state	Finished dry engine, without operational propellant unless propellant is an inseparable sold constituent; protected for shipment at factory gate

3. Reference Flow

Field	Value
What	Supply of a finished non-turbojet reaction engine capable of the declared thrust-producing function
How much	1 kg accepted dry engine mass at the manufacturing factory gate
How well	Conforms to the declared engine configuration, material and cleanliness specifications, and acceptance criteria
How long or cycle	One factory-gate delivery; declared design life, duty cycle, starts, or impulse capability is disclosed but the use stage is outside this production inventory
reference_flow_link	The accepted dry product output is normalized to the reference product flow below

Field	Value
Reference amount	1 kg
Reference product flow	Reaction engines other than turbo-jets f425fe92-1cdd-45c2-9695-3486a06fbf2c
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	engine technology; model and configuration; dry-mass definition; propellant inclusion state; rated thrust or impulse basis; acceptance-test status; cleanliness class; production site and geography; reporting period; shipping-package inclusion

When constructing a foreground data package, the items listed in Required qualifiers must be declared in dataset metadata, process notes, the reference flow comment, the product description, or an equivalent data-package field.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_dry_mass	reference product and mass-normalized inventory	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure the accepted engine after draining temporary test fluids and before external shipping packaging; disclose any inseparable sold propellant, igniter, actuator, controller, or insulation included in dry mass.
material_mass	material, cleaning chemical, packaging, scrap, and aqueous waste rows	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use net mass crossing the foreground boundary; do not substitute purchase value, nominal stock size, or gross container mass.
utility_energy	electricity rows	Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66	MJ	Record delivered electrical energy in MJ; when meters report kWh, multiply the measured kWh by 3.6 and retain the original meter reading.
test_gas_volume	gaseous natural-gas and industrial-oxygen test rows	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	Report metered gas volume at the declared temperature and absolute pressure; do not combine gases or mix standard and actual volumes without a documented conversion.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased materials and components accepted at the manufacturing site, with supplier identity, supplied state, mass, and upstream dataset declared
starting_condition_role	Cradle-to-gate starting inventory for the reaction-engine manufacturing foreground
product_classification_scope	Complete CPC 43133 reaction engines other than turbo-jets; separately supplied parts and excluded engine classes remain outside scope
recursive_input_rule	A purchased complete CPC 43133 engine used in the foreground is recorded once as a same-category product input with its upstream dataset and is not recursively decomposed unless the producer has non-overlapping primary records
upstream_dataset_requirement	Every purchased material, component, utility, gas, chemical, and package shall link to a geography-, technology-, and state-appropriate upstream dataset
disclosure	Declare engine technology, material and component supply states, site geography, test sequence and media, direct test emissions, dry-mass convention, packaging, cut-offs, and exclusions

rule_id	Applies to	Rule	source_ids
boundary_factory_gate	manufacturing foreground	Include received-material control, fabrication, joining, precision cleaning, assembly, acceptance testing, and factory-applied shipping protection through release of the accepted dry engine at the factory gate.	nasa-jsc-manufacturing-assembly-integration; nasa-wstf-development-qualification-acceptance
boundary_test_media	acceptance testing	Add every actual propellant, oxidizer, pressurant, purge gas, cleaning liquid, and direct exhaust species as its own atomic exchange when it crosses the foreground boundary; the listed natural-gas and oxygen rows apply only to that declared route.	ecss-e-st-35-10c-2009
boundary_cleanliness	precision cleaning	Include cleaning media, rejected baths, rinses, drying energy, and cleanliness verification that occur at the manufacturing site; preserve product-specific cleanliness criteria.	ecss-e-st-35-06c-rev2-2020; nasa-jsc-manufacturing-assembly-integration
boundary_exclusions	downstream stages	Exclude installation in a vehicle, distribution after the factory gate, operational propellant loaded outside manufacturing, launch or flight, maintenance, and end-of-life unless a study explicitly extends the boundary and reports those stages separately.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
engine_manufacture	Component fabrication, cleaning, assembly, and packaging	required	Always included for a finished factory-gate engine; individual material and cleaning rows apply only when used	foreground production	1 kg accepted dry reaction engine output
acceptance_testing	Engine acceptance and qualification testing	required	Include the actual release test sequence; hot-fire media and emissions apply only when that route is performed at the reporting site	foreground quality assurance	Test campaign attributable to 1 kg accepted dry reaction engine output

Process: Component fabrication, cleaning, assembly, and packaging (engine_manufacture)

Inputs

Product flows

Stainless-steel stock (stainless_steel_input)

Record stainless steel consumed in engine parts and tooling losses attributable to saleable production when the declared bill of materials contains stainless steel.

• Selected flow: Stainless steel 84c2403f-5062-5d68-8276-838384d32b89
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Net stainless-steel input from accepted material issues less documented return to stock
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_material_inputs
• Sources:

Aluminium-magnesium alloy stock (aluminium_magnesium_alloy_input)

Record this alloy only when the bill of materials identifies aluminium-magnesium alloy bar, rod, or profile stock.

• Selected flow: Aluminium Magnesium Alloy ab57ae32-8ffe-47fe-9550-53381391a038
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Net aluminium-magnesium alloy input from accepted material issues less documented return to stock
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_material_inputs
• Sources:

Titanium plate stock (titanium_plate_input)

Record titanium plate only when it is issued to the declared engine configuration.

• Selected flow: Titanium Plate f32fc628-252f-40fe-8f8d-fd0efb955e92
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Net titanium-plate input from accepted material issues less documented return to stock
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_material_inputs
• Sources:

Manufacturing electricity (manufacturing_electricity)

Record electricity for machining, joining, cleaning, drying, assembly, environmental control, and attributable factory support within this process.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ / Units of energy 93a60a57-a3c8-11da-a746-0800200c9a66
• Amount rule: Metered or allocated delivered electricity for the reporting-period manufacturing output
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_manufacturing_electricity
• Sources:

Process water for precision cleaning (process_water_input)

Record process water that enters precision cleaning or rinsing. Do not use this row for a distinct recirculating cooling-water flow.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Measured cleaning and rinse-water mass, or measured volume converted with documented density and temperature
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_cleaning_inputs
• Sources:

Sodium hydroxide cleaning chemical (sodium_hydroxide_input)

Record sodium hydroxide only when it is delivered into an alkaline cleaning bath; declare supplied state and concentration and report pure-product-equivalent mass separately from carrier water.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Purchased sodium-hydroxide product mass multiplied by declared mass fraction used in production
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_cleaning_inputs
• Sources:

Wooden shipping crate (wooden_shipping_crate)

Record the mass of a wooden crate newly supplied with the engine; reusable crates are amortized over documented uses. No exact TianGong flow UUID was confirmed.

• Selected flow: Wooden shipping crate
• Flow property / unit: Mass / kg
• Amount rule: Net crate mass allocated to shipped accepted engines
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_packaging_crate
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Accepted reaction engine (reference_product)

The accepted dry engine is the reference product after the declared manufacturing and acceptance-test sequence.

• Selected flow: Reaction engines other than turbo-jets f425fe92-1cdd-45c2-9695-3486a06fbf2c
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Measured accepted dry engine mass normalized to 1 kg reference product
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_output
• Sources:

Waste flows

Machining metal scrap (machining_metal_scrap)

Record metal chips and offcuts leaving machining as one measured waste stream; disclose alloy segregation, contamination, and destination.

• Selected flow: Metal scrap from machining 616bb9e9-a954-475e-b1b8-a73f659ff694
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Measured net machining-scrap mass transferred out of the foreground process
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_machining_scrap
• Sources:

Spent sodium-hydroxide cleaning solution (spent_sodium_hydroxide_cleaning_solution)

Record a discharged bath containing sodium hydroxide and removed soil as a distinct waste. Do not merge it with other wastewater. No exact TianGong flow UUID was confirmed.

• Selected flow: Spent sodium-hydroxide cleaning solution
• Flow property / unit: Mass / kg
• Amount rule: Measured discharged solution mass attributable to engine production
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_spent_cleaning_solution
• Sources:

Elementary flows

Process: Engine acceptance and qualification testing (acceptance_testing)

Inputs

Product flows

Acceptance-test electricity (test_electricity)

Record delivered electricity for instrumentation, pumps, controls, ventilation, and test-stand operation attributable to the accepted production units.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ / Units of energy 93a60a57-a3c8-11da-a746-0800200c9a66
• Amount rule: Metered test-stand electricity attributed to accepted engines in the test campaign
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_test_electricity
• Sources:

Gaseous natural gas test fuel (test_natural_gas)

Record gaseous natural gas only for a declared acceptance-test route that meters this fuel. Do not use it as a proxy for methane, hydrogen, kerosene, or another test fuel.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3 / Units of volume 93a60a57-a3c8-12da-a746-0800200c9a66
• Amount rule: Metered natural-gas volume corrected to the declared reference temperature and absolute pressure
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_test_fluids
• Sources:

Industrial oxygen test oxidizer (test_industrial_oxygen)

Record industrial oxygen only when gaseous oxygen crosses the acceptance-test boundary; disclose purity, pressure, reference conditions, and whether supply is purchased or generated on site.

• Selected flow: Industrial oxygen bd4b0f96-2090-4806-a648-335ab20ff401
• Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3 / Units of volume 93a60a57-a3c8-12da-a746-0800200c9a66
• Amount rule: Metered gaseous-oxygen volume corrected to the declared reference temperature and absolute pressure
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_test_fluids
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Direct fossil carbon dioxide from natural-gas testing (test_fossil_carbon_dioxide)

Record only directly measured fossil carbon dioxide discharged from the natural-gas test route. Upstream emissions embedded in electricity, gas, or oxygen datasets are not repeated here.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg / Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Measured direct fossil-carbon-dioxide mass discharged during attributable natural-gas acceptance testing
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg accepted dry reaction engine output
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_test_fossil_co2
• Sources:

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision	shared manufacturing and test operations	Prefer direct metering or subdivision by engine model, work order, machine hour, test firing, or accepted dry mass before allocation.
allocation_shared_facility	residual shared utilities and support activities	Allocate only the residual unmetered share using a documented causal driver; disclose the driver and test sensitivity when the residual materially affects results.
allocation_scrap	machining metal scrap	Keep input-material burdens with the engine product and report scrap at the measured factory-gate waste amount; do not claim an avoided-burden credit unless the governing LCA study method requires it and the credit is reported separately.
allocation_rework	rejected or reworked units	Attribute rework, retest, and scrapped-unit burdens to the accepted output of the same reporting period; do not omit failed tests from the production yield.	nasa-wstf-development-qualification-acceptance

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_material_inputs	engine_manufacture	stainless steel, aluminium-magnesium alloy, and titanium plate inputs	receiving and material-issue records	flow UUID; material designation; grade; stock form; lot; issued mass; returned mass; supplier; upstream dataset	reconcile accepted receipts, work-order issues, and returns to stock	kg	each lot and work order	full reporting period	all production areas serving the declared engine	sum net issued mass by atomic material and divide by accepted dry output mass	purchase record; material certificate; calibrated scale record; work-order trace
cp_manufacturing_electricity	engine_manufacture	manufacturing electricity	electricity meter and allocation record	meter id; opening and closing reading; kWh; machine or area; allocation driver; downtime; accepted output mass	use submeter first; allocate residual facility consumption with documented causal driver	kWh and MJ	continuous meter, aggregated monthly	full reporting period	manufacturing, cleaning, assembly, and attributable support	convert kWh to MJ, subtract excluded loads, then divide by accepted dry output mass	meter calibration; utility invoice; load map; allocation worksheet
cp_cleaning_inputs	engine_manufacture	process water and sodium hydroxide	bath make-up, rinse meter, and chemical issue records	water mass or volume; temperature; density; sodium-hydroxide product mass; concentration; bath id; engine work orders	meter water and weigh chemical additions; link batches to cleaned engine hardware	kg and m3	each bath make-up, addition, and discharge	full reporting period	all in-scope precision-cleaning lines	calculate water mass and pure-product-equivalent sodium hydroxide; divide attributable totals by accepted dry output mass	calibrated meter or scale; chemical certificate; bath log; work-order trace
cp_packaging_crate	engine_manufacture	wooden shipping crate	packaging bill and reuse log	crate id; tare mass; engine id; new or reused status; prior and expected uses	weigh the crate and record each documented use	kg	each shipment	full reporting period	factory-gate packaging	allocate new-crate mass once or amortize reusable-crate mass over documented uses; divide by shipped accepted dry mass	scale calibration; packing list; reuse log
cp_machining_scrap	engine_manufacture	machining metal scrap	scrap container and dispatch records	container id; tare and gross mass; alloy segregation; contamination; work orders; destination	weigh each outbound scrap container and link to production work orders	kg	each dispatch	full reporting period	all in-scope machining areas	subtract tare, sum attributable net scrap, and divide by accepted dry output mass	calibrated scale; dispatch note; segregation log
cp_spent_cleaning_solution	engine_manufacture	spent sodium-hydroxide cleaning solution	bath discharge record	bath id; solution mass or volume; density; sodium-hydroxide concentration; contamination; destination; work orders	weigh discharge or convert measured volume with documented density	kg	each discharge	full reporting period	in-scope alkaline cleaning lines	calculate attributable discharged mass and divide by accepted dry output mass	discharge log; meter or scale calibration; waste transfer record; bath analysis
cp_product_output	engine_manufacture	accepted dry reaction engine	final inspection and weighing record	engine id; model; configuration; dry-mass inclusions; gross mass; removable test fluid; packaging tare; acceptance status	calibrated final weighing after drainage and before external shipping package	kg	every accepted engine	full reporting period	all declared production sites	sum accepted dry mass; exclude rejected units from output but retain their burdens	calibrated scale record; configuration baseline; acceptance release
cp_test_electricity	acceptance_testing	acceptance-test electricity	test-stand meter record	test id; engine id; meter readings; kWh; auxiliary loads; accepted or failed result	submeter the test stand and its attributable auxiliaries	kWh and MJ	every test	full reporting period	all in-scope test stands	sum all attributable tests including failures and retests; convert to MJ and divide by accepted dry output mass	meter calibration; test log; engine serial trace
cp_test_fluids	acceptance_testing	gaseous natural gas and industrial oxygen	calibrated flow-meter and supply record	gas identity; purity or composition; meter id; measured volume; temperature; absolute pressure; test id; engine id	meter each gas separately and correct to the declared reference conditions	m3	every test	full reporting period	all in-scope test stands	sum corrected volume by atomic gas including failed tests and divide by accepted dry output mass	meter calibration; gas certificate; test log; pressure and temperature record
cp_test_fossil_co2	acceptance_testing	direct fossil carbon dioxide	exhaust measurement record	test id; engine id; CO2 concentration; exhaust flow; temperature; pressure; duration; calibration gases	integrate calibrated concentration and exhaust-flow measurements over each test	kg	every natural-gas test	full reporting period	natural-gas test exhaust boundary	sum measured direct fossil CO2 including failed tests and divide by accepted dry output mass	analyzer and flow calibration; raw time series; test log

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize_by_dry_mass	every manufacturing and test exchange	normalized amount = reporting-period exchange amount / reporting-period accepted dry reaction-engine mass	atomic exchange total; accepted dry output mass	exchange amount per 1 kg reference product
convert_electricity	electricity meter records	delivered electricity MJ = measured kWh × 3.6	measured kWh	MJ electricity
convert_water_mass	process-water records	water mass = measured water volume × documented density at the measured temperature; use direct weighed mass when available	water volume or weighed mass; density; temperature	kg process water
net_material_issue	material inputs	net material input = accepted issued mass − documented return-to-stock mass; scrap remains a separate output	issued mass; returned mass	kg atomic material input
correct_test_gas_volume	natural gas and industrial oxygen	correct each measured gas volume to the dataset's declared reference temperature and absolute pressure without combining gas identities	measured volume; temperature; absolute pressure; compressibility method when material	m3 of each gas at declared conditions	ecss-e-st-35-10c-2009

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	reference product and all inventory rows	Preserve the selected TianGong UUID and exact flow identity; unresolved crate and spent-cleaning-solution rows remain explicit and may not be replaced by generic packaging or wastewater.	finalized UUID-search receipts; bill of materials; waste description
dq_completeness	foreground inventory	Reconcile every bill-of-material item, utility meter, cleaning batch, test campaign, rejected unit, package, waste transfer, and direct test emission to the reporting period; add omitted exchanges as atomic rows.	completeness reconciliation signed by data owner
dq_temporal	reporting period	Use one representative production period that includes all accepted units, failures, rework, and tests; disclose low-volume or campaign-production effects.	production, test, meter, and shipment date coverage
dq_cleanliness	cleaning and assembly	Retain the applicable cleanliness specification, cleaning batch record, verification result, and post-test re-cleaning record.	cleanliness certificate and inspection record supported by ecss-e-st-35-06c-rev2-2020
dq_test_traceability	acceptance testing	Link every fluid, energy, test result, retest, and directly measured emission to engine serial numbers and the declared acceptance sequence.	test procedure, raw test log, calibration record, and release decision supported by nasa-wstf-development-qualification-acceptance
dq_upstream	purchased inputs	Select upstream datasets matching material grade or product state, supplier geography, production technology, gas reference conditions, and electricity grid; disclose proxies.	supplier certificate and documented upstream-dataset selection

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_identity	reference product	Confirm the product flow UUID, CPC 43133 identity, accepted dry-mass measurement, and all required qualifiers before dataset release.	un-cpc-3-0-structure-2025
validate_atomic_inventory	all inventory rows	Reject collection labels or combined flows; each reported material, utility, cleaning chemical, test fluid, package, waste, and elementary emission shall be one atomic exchange.
validate_mass_reconciliation	manufacturing process	Reconcile material issues, return to stock, accepted dry product, machining scrap, cleaning waste, rejected hardware, and inventory changes; explain any material residual.
validate_test_route	acceptance testing	Natural gas, industrial oxygen, and fossil carbon dioxide rows may be nonzero only for a documented compatible test route; add separately identified flows for every other test medium or direct emission.	ecss-e-st-35-10c-2009; nasa-wstf-development-qualification-acceptance
validate_direct_emissions	test exhaust	Confirm direct fossil carbon dioxide is measured at the foreground exhaust boundary and does not repeat upstream emissions embedded in purchased-input datasets.
validate_cleanliness_records	cleaning and assembly	Confirm that cleaning requirements, verification results, and any post-test re-cleaning are present for the declared engine configuration.	ecss-e-st-35-06c-rev2-2020
validate_unresolved	unresolved flow identities and ranges	Keep the wooden-crate and spent-cleaning-solution UUID gaps and all range-evidence needs open until exact identity or independent compatible evidence is reviewed; do not invent proxies or numeric ranges.

10. Published Dataset Profile

Field	Value
dataset_role	foreground production dataset eligible for publication as a secondary_dataset or background_dataset after review
downstream_use	cradle-to-gate product-footprint models for non-turbojet reaction engines and separately disclosed aircraft or spacecraft system models
allowed_use	comparisons or aggregation only when engine technology, dry-mass convention, configuration, acceptance-test boundary, geography, and data quality are compatible
excluded_use	direct substitution for turbo-jets, turbo-propellers, piston engines, separate parts, complete vehicles, operational propellant supply, use-stage thrust or impulse, maintenance, or end-of-life
required_metadata	canonical PCR id; engine technology and model; configuration; CPC identity; dry-mass inclusions; rated thrust or impulse basis; production site and period; test sequence and media; cleanliness class; packaging state; allocation; cut-offs; unresolved identities; data-quality rating
required_quality_disclosure	primary-record share; meter and scale coverage; bill-of-material completeness; upstream dataset representativeness; failures and rework; test traceability; direct-emission measurement; unresolved UUID and range-evidence needs
update_trigger	material change in engine technology, configuration, bill of materials, manufacturing site, cleaning route, acceptance-test sequence or media, dry-mass definition, allocation method, upstream datasets, or resolution of an open identity or range-evidence need

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	Official guidance (official_guidance)	United Nations Statistics Division, CPC Version 3.0 Structure, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-05)	CPC 43133 identity, hierarchy, and exclusion from adjacent engine subclasses
prc-customs-rcep-origin-rules-2022	Official guidance (official_guidance)	General Administration of Customs of the People's Republic of China, Announcement No. 129 of 2022, RCEP product-specific rules of origin, Annex 1, HS 8412.10, official copy at https://www.tid.gov.hk/en/tradecircular/files/2022/ci2022998a.pdf (retrieved 2026-09-05)	Professional Chinese terminology cross-check for non-turbojet reaction engines
nasa-jsc-manufacturing-assembly-integration	Official guidance (official_guidance)	NASA Johnson Space Center, Manufacturing, Assembly & Integration, https://www.nasa.gov/reference/jsc-manufacturing-assembly-integration/ (retrieved 2026-09-05)	Fabrication, materials, precision cleaning, assembly, packaging protection, acceptance testing, and quality-record process decomposition
nasa-wstf-development-qualification-acceptance	Official guidance (official_guidance)	NASA White Sands Test Facility, Development, Qualification, and Acceptance, updated 15 October 2023, https://www.nasa.gov/centers-and-facilities/white-sands/development-qualification-and-acceptance/ (retrieved 2026-09-05)	Engine hardware fabrication, system assembly, qualification, acceptance testing, and traceability requirements
ecss-e-st-35-06c-rev2-2020	Standard (standard)	European Cooperation for Space Standardization, ECSS-E-ST-35-06C Rev.2, Cleanliness requirements for spacecraft propulsion hardware, 7 April 2020, https://ecss.nl/standard/ecss-e-st-35-06c-rev-2-cleanliness-requirements-for-spacecraft-propulsion-hardware-7-april-2020/ (retrieved 2026-09-05)	Cleaning, cleanliness verification, contamination-control boundary, and evidence requirements
ecss-e-st-35-10c-2009	Standard (standard)	European Cooperation for Space Standardization, ECSS-E-ST-35-10C, Compatibility testing for liquid propulsion systems, 6 March 2009, https://ecss.nl/standard/ecss-e-st-35-10c-compatibility-testing-for-liquid-propulsion-systems/ (retrieved 2026-09-05)	Atomic test-media boundary, reference-condition disclosure, and compatibility-test traceability