Winfoil

Design ListDesign_List 

Other Available Tabs

Detail TabDetail_Tab 

Drag Breakdown TabDrag_Breakdown_Tab 

Performance TabPerformance_Tab 

Power Required TabPower_Required_Tab 

Lift to Drag Ratio TabLift_to_Drag_Ratio_Tab 

This tab displays a plan view of a design item and provides tools to create and modify a design item. The view provided varies according to the selected design item. The following design items and views are provided;

The plot may be increased or decreased in size by clicking on the magnify or reduce buttons in the tool bar running along the bottom of the screen. The plot may also be scrolled up and down or left and right so as to position the plot as required. 

A design item is input by either using the mouse or by entering the coordinates of the design item through the keyboard. The position of the mouse pointer is shown as a dimension based on the distance from the top edge point of the left most coordinate of the design item. Coordinates of a design item are entered as pairs, ie; upper coordinate (top edge) first then lower coordinate (lower edge). Typically a simple tapered wing will only need two coordinate pairs. One pair for the root of the wing and one pair for the tip of the wing. If you wish to design an elliptical wing , a number of coordinate pairs will need to be entered, with a close distribution of coordinate pairs at the tip to capture the rounded tip shape.

The CADCAD interface provides the capability to select coordinate points with the mouse. Once selected a coordinate pair can be moved about or stretched apart to alter the shape of a wing, tail or fuselage component.

Items which can be changed on this screen are;

Measurement Units

Select or click on the dropdown list of measurement units to change. When the units are changed all dimensions are recalculated for the selected units.

Root Airfoil

Select or click on the dropdown list of airfoils to change the airfoil at the root of the wing or tail design.

Tip Airfoil

Select or click on the dropdown list of airfoils to change the airfoil at the tip of the wing or tail design.

Span or Length

Enter a new value in this box to change the span or fuselage length or former width. Next to this box is a button called . This is used to select the type of scaling applied when the span, length or width is changed. 

An Option button is provided to allow one of two options;

1. To scale the design and maintain the Aspect Ratio. The design will be scaled proportionally.

2. Do not scale design. Span or length will be increased however new points must be either deleted if the span is reduced or added if the span is increased.

No. of Ribs

Enter a value in this box to change the number of ribs. Click on the Redraw Design Toolbar button for this to take effect. This will cause the wing or tail design to be redrawn and the rib lengths recalculated.

The Windows Calculator can be accessed from the Tool Menu or by pressing the function key F5 to perform scaling calculations as required.

Whenever an item is modified Winfoil will recalculate the following;

Other capabilities provided in this screen;

Design CAD Tool Bar FunctionsWING_CAD_TOOL_BAR_FUNCTIONS 

How to design a wing in the Design CAD ScreenHOW_TO_DESIGN_A_WING_IN_WING_CAD