wingRibsDefinitionType

Ribs are defined in sets: one definition holds either several ribs of the same kind, spaced along a reference line (<ribsPositioning>), or one rib between two given points (<ribExplicitPositioning>). The cross section (<ribCrossSection>) holds for every rib of the definition.

A rib is a plane surface, bounded by the wing and by the spars or edges at which it starts and ends. Its direction and its inclination follow from the rotations described with the positioning and the cross section.

Top view of a wing with two rib sets and a single rib, all running from the front to the rear spar: seven inner ribs in flight direction, a single rib at the kink of the wing between the two spar positions there, and eight outer ribs perpendicular to the rear spar. The rear spar is marked as the reference line of both sets, with a bracket on it for the spacing of 0.8 m between two inner ribs and dots at the start and the end of the outer set

The figure shows the ribs of the example below in the top view: an inner set whose ribs run in flight direction, a single rib at the kink of the wing, and an outer set whose ribs stand perpendicular to the rear spar. All of them run from the front to the rear spar, and both sets are spaced on the rear spar.

Example

The outer rib set: eight ribs between two points of the rear spar, perpendicular to it, each from the front to the rear spar:

<ribsDefinitions>
    <ribsDefinition uID="Wing_outerRibs">
        <name>Outer ribs</name>
        <ribsPositioning>
            <startCurvePoint>
                <eta>0.47</eta>
                <referenceUID>Wing_rearSpar</referenceUID>
            </startCurvePoint>
            <endCurvePoint>
                <eta>0.95</eta>
                <referenceUID>Wing_rearSpar</referenceUID>
            </endCurvePoint>
            <ribStart>Wing_frontSpar</ribStart>
            <ribEnd>Wing_rearSpar</ribEnd>
            <numberOfRibs>8</numberOfRibs>
            <ribReference>Wing_rearSpar</ribReference>
            <ribCrossingBehaviour>cross</ribCrossingBehaviour>
            <ribRotation>
                <ribRotationReference>Wing_rearSpar</ribRotationReference>
                <z>90</z>
            </ribRotation>
        </ribsPositioning>
        <ribCrossSection>
            <material>
                <materialUID>Aluminium2024</materialUID>
                <thickness>0.0025</thickness>
            </material>
            <upperCap uID="Wing_outerRibs_upperCap">
                <area>0.0006</area>
                <material>
                    <materialUID>Aluminium2024</materialUID>
                    <thickness>0.003</thickness>
                </material>
            </upperCap>
            <lowerCap uID="Wing_outerRibs_lowerCap">
                <area>0.0006</area>
                <material>
                    <materialUID>Aluminium2024</materialUID>
                    <thickness>0.003</thickness>
                </material>
            </lowerCap>
        </ribCrossSection>
    </ribsDefinition>
</ribsDefinitions>

A set of ribs of a wing

Attributes

Name	Type	Use	Description
`@externalDataDirectory`	`xsd:string`	optional	Directory of the external file the element was read from, as URI
`@externalDataNodePath`	`xsd:string`	optional	Path of the parent element in the merged dataset, at which the element was inserted from an external file
`@externalFileName`	`xsd:string`	optional	Name of the external file the element was read from
`@uID`	`xsd:ID`	required	UID

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
sequenceThe children below must appear in exactly this order. Each may repeat as often as its own occurrence allows.
`name`	`stringBaseType`	[1..1] required	Name of the rib or of the rib set
`description`	`stringBaseType`	[0..1] optional	Description of the rib or of the rib set
choiceExactly one of the alternatives below may appear, unless the occurrence next to this line says otherwise.
`ribsPositioning`	`wingRibsPositioningType`	[1..1] required	Several ribs, spaced along a reference line
`ribExplicitPositioning`	`wingRibExplicitPositioningType`	[1..1] required	A single rib between two points
`ribCrossSection`	`wingRibCrossSectionType`	[1..1] required	Cross section of every rib of this definition

wingRibsDefinitionType

Attributes

Child elements

Used by

In a dataset · 12 paths

In the schema · 1 declaration