nacelleGuideCurveType

The following figure shows the basic setup of the guide curves. They always start at a given ζ-position (fromZeta) on the profile of the specified start section (startSectionUID) and end at the ζ-position (toZeta) on the profile of the subsequent section. The relative coordinates of the guide curves are specified in cpacs/vehicles/profiles/guideCurves and referenced via its uID.

Note: Guide curves and profiles must result in a valid curve network.

The guide curve points are interpreted as (Δr and Δx) offsets from a cubic polynomial. This polynomial serves as a baseline for guide curves between segments located on different radial positions with smooth transitions:

Note: Nacelle guide curves reference the same guide curve profiles (guideCurveProfileGeometryType) as the guide curves of wings and fuselages. Therefore, the parameters have a different meaning:

Standard guide curve parameter	Nacelle guide curve equivalent	Description
rX	φ	Independent variable normalized to [0,1]
rY	Δx	Orthogonal offset (translation in x-direction)
rZ	Δr	Radial offset

Attributes

Name	Type	Use	Description
`@externalDataDirectory`	`xsd:string`	optional	Directory of the external data file
`@externalDataNodePath`	`xsd:string`	optional	Path of the node inside the external data file
`@externalFileName`	`xsd:string`	optional	Name of the external data file

Child elements

Name	Type	OccurrenceHow often the element may appear at this place. The schema writes it as minOccurs and maxOccurs on the declaration.	Description
allThe children below may appear in any order. Each may appear at most once.
`name`	`stringBaseType`	[1..1] required	Name
`description`	`stringBaseType`	[0..1] optional	Description
`guideCurveProfileUID`	`stringUIDBaseType`	[1..1] required	UID of the guide curve profile
`startSectionUID`	`stringUIDBaseType`	[1..1] required	UID of the start section
`fromZeta`	`doubleBaseType`	[1..1] required	Curve coordinate of the referenced section profile at which the guide curve shall start. Valid values are in the interval -1,..,1.
`toZeta`	`doubleBaseType`	[1..1] required	Curve coordinate of the profile following the referenced section profile. It defines where the guide curve ends. Valid values are in the interval -1,..,1.

nacelleGuideCurveType

Attributes

Child elements

Used by

In a dataset · 2 paths

In the schema · 1 declaration