--- title: "GET /udl/engine/tuple" method: GET path: "/udl/engine/tuple" tags: ["Launch"] --- # GET /udl/engine/tuple `GET /udl/engine/tuple` ## Request - Base URL: `https://unifieddatalibrary.com` - URL: `https://unifieddatalibrary.com/udl/engine/tuple` - Auth: none declared Service operation to dynamically query data and only return specified columns/fields. Requested columns are specified by the 'columns' query parameter and should be a comma separated list of valid fields for the specified data type. classificationMarking is always returned. See the queryhelp operation (`/udl//queryhelp`) for more details on valid/required query parameter information. An example URI: /udl/elset/tuple?columns=satNo,period&epoch=>now-5 hours would return the satNo and period of elsets with an epoch greater than 5 hours ago. ## Query parameters - `columns` string, required - `firstResult` integer - `maxResults` integer ## Response `200` OK - EngineFull[] - `id` string: Unique identifier of the record, auto-generated by the system. - `name` string, required: Engine name/variant. - `classificationMarking` string, required: Classification marking of the data in IC/CAPCO Portion-marked format. - `createdAt` string, date-time: Time the row was created in the database, auto-populated by the system. - `createdBy` string: Application user who created the row in the database, auto-populated by the system. - `updatedAt` string, date-time: Time the row was last updated in the database, auto-populated by the system. - `updatedBy` string: Application user who updated the row in the database, auto-populated by the system. - `source` string, required: Source of the data. - `origin` string: Originating system or organization which produced the data, if different from the source. The origin may be different than the source if the source was a mediating system which forwarded the data on behalf of the origin system. If null, the source may be assumed to be the origin. - `origNetwork` string: The originating source network on which this record was created, auto-populated by the system. - `dataMode` 'REAL' | 'TEST' | 'SIMULATED' | 'EXERCISE', required: Indicator of whether the data is REAL, TEST, EXERCISE, or SIMULATED data: REAL: Data collected or produced that pertains to real-world objects, events, and analysis. TEST: Specific datasets used to evaluate compliance with specifications and requirements, and for validating technical, functional, and performance characteristics. EXERCISE: Data pertaining to a government or military exercise. The data may include both real and simulated data. SIMULATED: Synthetic data generated by a model to mimic real-world datasets. - `engineDetails` EngineDetailsFull[]: Read-only collection of additional EngineDetails by various sources for this engine, ignored on create/update. These details must be created separately via the /udl/enginedetails operations. - `id` string: Unique identifier of the record, auto-generated by the system. - `idEngine` string, required: Identifier of the parent engine record. - `classificationMarking` string, required: Classification marking of the data in IC/CAPCO Portion-marked format. - `family` string: Engine type or family. - `cycleType` string: Engine cycle type (e.g. Electrostatic Ion, Pressure Fed, Hall, Catalytic Decomposition, etc.). - `characteristicType` string: Engine characteristic type (e.g. Electric, Mono-propellant, Bi-propellant, etc.). - `manufacturerOrgId` string: Organization ID of the engine manufacturer. - `specificImpulse` number, double: Launch engine specific impulse in seconds. - `burnTime` number, double: Launch engine maximum burn time in seconds. - `seaLevelThrust` number, double: Engine maximum thrust at sea level in Kilo-Newtons. - `vacuumThrust` number, double: Engine maximum thrust in a vacuum in Kilo-Newtons. - `chamberPressure` number, double: Engine chamber pressure in bars. - `nozzleExpansionRatio` number, double: Engine nozzle expansion ratio. - `maxFirings` integer: Engine maximum number of firings. - `propellant` string: Propellant/fuel type of the engine (e.g. Liquid Hydrogen, Kerosene, Aerozine, etc). - `oxidizer` string: Oxidizer type (e.g. Nitrogen Tetroxide, Liquid Oxygen, etc). - `notes` string: Notes/Description of the engine. - `createdAt` string, date-time: Time the row was created in the database, auto-populated by the system. - `createdBy` string: Application user who created the row in the database, auto-populated by the system. - `updatedAt` string, date-time: Time the row was last updated in the database, auto-populated by the system. - `updatedBy` string: Application user who updated the row in the database, auto-populated by the system. - `source` string, required: Source of the data. - `origin` string: Originating system or organization which produced the data, if different from the source. The origin may be different than the source if the source was a mediating system which forwarded the data on behalf of the origin system. If null, the source may be assumed to be the origin. - `origNetwork` string: The originating source network on which this record was created, auto-populated by the system. - `dataMode` 'REAL' | 'TEST' | 'SIMULATED' | 'EXERCISE', required: Indicator of whether the data is REAL, TEST, EXERCISE, or SIMULATED data: REAL: Data collected or produced that pertains to real-world objects, events, and analysis. TEST: Specific datasets used to evaluate compliance with specifications and requirements, and for validating technical, functional, and performance characteristics. EXERCISE: Data pertaining to a government or military exercise. The data may include both real and simulated data. SIMULATED: Synthetic data generated by a model to mimic real-world datasets. - `tags` string[]: Optional array of provider/source specific tags for this data, where each element is no longer than 32 characters, used for implementing data owner conditional access controls to restrict access to the data. Should be left null by data providers unless conditional access controls are coordinated with the UDL team. ## Other responses - `400`: Bad Request - `401`: Invalid/Missing User Credentials - `403`: User Is Not Authorized - `405`: Method Not Allowed - `406`: MediaType Not Accepted by Request Headers - `429`: Rate of Requests Exceeds Allowed Limit - `500`: Internal Server Error ## Changes > 12 revisions in range; 1 could not be searched. - **2025-05-29** `4e1cbc17e814`: 2 info - added the new optional `query` request parameter `firstResult` - added the new optional `query` request parameter `maxResults` - **2025-04-16** `75f764c843a9`: 2 info - api operation id `findAllTuples_41` removed and replaced with `` - the endpoint scheme security `BasicAuth` was removed from the API [Operation history](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/changes/udl/engine/tuple/get.md) --- [API](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api.md) - [All operations](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/llms.txt) - [OpenAPI document](https://skmtc.dev/bluestaq/apis/unified-data-library-services-api/revisions/bd17bc53681e?raw)