complexType · extension complexBaseType · all
Opening in the fuselage
A cut-out describes an opening in the fuselage, such as a door, an emergency exit, a window or a ramp. It is a rectangle with rounded corners, extruded along <orientationVector>, and removes the fuselage surface around its centre; the opposite side of the fuselage is not affected. A door of a deck refers to its cut-out by UID (doorOpeningType).
Position
All values are given in the fuselage coordinate system. The centre of the cut-out is a point on the surface, given in the same way as the position of a stringer or a frame (stringerFramePositionType): the point where the ray from the reference point (<positionX>, <referenceY>, <referenceZ>) in the direction of <referenceAngle> meets the surface. The ray runs in the plane x = <positionX>; 0° points up and 90° towards −y, i.e. to the left side in flight direction.
Shape
The cut-out coordinate system has its origin at the centre. Its x-axis is the <orientationVector>, which points out of the fuselage and is the direction of the extrusion. Its y-axis is the <alignmentVector>, projected onto the plane normal to the x-axis, and its z-axis completes the right-handed system. The cut-out is the rectangle in the y-z plane that is centred at the origin, <deltaY> wide along y and <deltaZ> high along z, with its corners rounded by <filletRadius>.
The figure shows the forward passenger door of the example below. In the section at <positionX>, seen from behind (a), the ray runs from the reference point to the left and meets the surface at the centre; the cut-out removes the arc of the contour between its upper and its lower edge. Seen from outside (b), the cut-out is the rounded rectangle around the centre, 0.81 m wide along the <alignmentVector> and 1.85 m high.
Without <alignmentVector>, the orientation of the rectangle about the x-axis is not yet specified, and neither is the meaning of <deltaY1> and <deltaZ1>.
Rules
The reference point lies inside the fuselage.
The <alignmentVector> is not parallel to the <orientationVector>.
The <filletRadius> is at most half the smaller of <deltaY> and <deltaZ>.
Example
The forward passenger door of a short-range airliner, 0.81 m wide and 1.85 m high, on the left side of the fuselage with its sill at the cabin floor at z = −0.55 m:
<cutOuts>
<element uID="Fuselage_paxDoorL1">
<name>Forward passenger door</name>
<positionX>6.2</positionX>
<referenceY>0</referenceY>
<referenceZ>0.375</referenceZ>
<referenceAngle>90</referenceAngle>
<orientationVector>
<x>0</x>
<y>-1</y>
<z>0</z>
</orientationVector>
<alignmentVector>
<x>1</x>
<y>0</y>
<z>0</z>
</alignmentVector>
<deltaY>0.81</deltaY>
<deltaZ>1.85</deltaZ>
<filletRadius>0.2</filletRadius>
<cutoutType>paxDoor</cutoutType>
</element>
...
</cutOuts>| Name | Type | Constraints | Use | Default | 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 |
| Name | Type | Constraints | OccurrenceHow often the element may appear at this place. The schema writes it as minOccurs and maxOccurs on the declaration. | Default | Description |
|---|---|---|---|---|---|
| allThe children below may appear in any order. Each may appear at most once. | |||||
name | stringBaseType | [0..1] optional | Name | ||
description | stringBaseType | [0..1] optional | Description | ||
positionX | doubleBaseType | [1..1] required | Position of the reference point and of the centre along the x-axis [m] | ||
referenceY | doubleBaseType | [1..1] required | Y-coordinate of the reference point [m] | ||
referenceZ | doubleBaseType | [1..1] required | Z-coordinate of the reference point [m] | ||
referenceAngle | doubleBaseType | [1..1] required | Direction of the ray from the reference point to the centre: the z-axis rotated about the x-axis, 90 pointing towards -y [deg] | ||
orientationVector | pointXYZType | [1..1] required | Direction of the extrusion, pointing out of the fuselage; x-axis of the cut-out coordinate system | ||
alignmentVector | pointXYZType | [0..1] optional | Direction of the width; projected onto the plane normal to the orientationVector, it is the y-axis of the cut-out coordinate system | ||
deltaY | doubleBaseType | [1..1] required | Width along the y-axis of the cut-out coordinate system [m] | ||
deltaZ | doubleBaseType | [1..1] required | Height along the z-axis of the cut-out coordinate system [m] | ||
deltaY1 | doubleBaseType | [0..1] optional | Further width, meaning not yet specified [m] | ||
deltaZ1 | doubleBaseType | [0..1] optional | Further height, meaning not yet specified [m] | ||
filletRadius | doubleBaseType | [1..1] required | Corner radius of the rectangle [m] | ||
cutoutType | stringBaseType | 6 values | [1..1] required | Kind of opening | |
cpacs/vehicles/aircraft/model/fuselages/fuselage/cutOuts/elementcpacs/vehicles/rotorcraft/model/fuselages/fuselage/cutOuts/element| Type | Name |
|---|---|
fuselageCutOutsType | element |