rotorType

Rotor (e.g. main rotor, tail rotor, fenestron, propeller,...) definition of a rotorcraft model.

The position and attitude of the rotor is defined using the transformation element. The following image shows the CPACS conventions for the orientation of rotors and rotor axis systems:

The origin coincides with the center of rotation.
The z-axis corresponds to the axis of rotation and thus coincides with the rotor shaft centerline. It Points in the main thrust direction of the rotor (usually upwards for a main rotor, forwards for a propeller).
The x-axis points from nose to tail (usually rearwards for main and tail rotors, upwards for a propeller).
The y-axis completes the right-handed orthogonal coordinate system.

Rotor hub attributes, hinges and references to attached rotor blades are defined in the rotorHub element.

Note that rotor blade geometries are only referenced and not defined in the child nodes of the rotor element. Refer to the documentation of rotorBladesType (rotorBladesType) and wingType (wingType) for information on the definition of rotor blade geometries.

The following figure shows the transformations to be applied to rotorBlade geometries to visualize them in the rotor frames for a given state (each rotor: rotorAzimuth given, each hinge: hingeDeflection given):

Attributes

Name	Type	Constraints	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
`@symmetry`	`symmetryXyXzYzType`	5 values	optional	Symmetry plane the component is mirrored at
`@uID`	`xsd:ID`		required	UID

Child elements

Name	Type	Constraints	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
`parentUID`	`stringUIDBaseType`		[0..1] optional	Component the rotor is attached to, usually the fuselage. The translation of the rotor is then given relative to the position of this component. In each rotorcraft model exactly one component has no parent; it is the root of the hierarchy.
`type`	`xsd:string`	4 values	[0..1] optional	Rotor type. Possible values: "mainRotor" (default), "tailRotor", "fenestron" or "propeller".
`nominalRotationsPerMinute`	`doubleBaseType`		[0..1] optional	Nominal value of the angular rotation speed in rotations per minute (rpm)
`transformation`	`transformationType`		[1..1] required	Transformation (scaling, rotation, translation). This element is used to define the position and attitude of the rotor relative to the global or the parent component's axis system. Note that an anisotropical scaling transformation should not be applied to the rotor.
`rotorHub`	`rotorHubType`		[1..1] required	The rotorHub element contains the definition of the rotor hub type and number and azimuth angles of the attached blades and their hinges. The rotor hub position and attitude coincides with the rotor axis system's origin and z axis.

rotorType

Attributes

Child elements

Used by

In a dataset · 1 path

In the schema · 1 declaration