Introduction

The Body of Revolution Design Mode enables you to choose which section of the cross-section profile you wish to rotate. You may use the Flowthrough option which will use the entire cross-section and revolve it based on Diameter and Angle. You may also use Upper which only uses the upper (0.5 <= W <= 1.0) part of the cross-section curve or Lower which uses the lower part of the curve (0.0 <= W <= 0.5).

Introduction

There are relatively few Design parameters for the Body of Revolution component, at least those generalized for the axisymmetric shape. These Design parameters are only available in Flowthrough design mode. Diameter sets the diameter of the controlling leading edge feature line wrapped around the center axis. Note that even if you modify the leading edge closure, the Diameter is still calculated on the original, unmodified W reference location. If you skew upper, it will use the inner curve. If you skew lower, it will use the outer curve. If you skew both, it will use the middle curve.

The Angle parameter sets the angle between a straight line from the fixed leading edge and trailing edge and the centerline where positive angle moves the trailing edge inward and negative angle moves the trailing edge outward. Again, if you choose to modify the trailing edge closure, the original, unmodified reference edge is used for Angle.

Introduction

The Body of Revolution component is effectively a wing-type body that is under a loop design mode where the first and last section are coincident and the surfaces are all symmetric about the centerline axis. Similar to a wing component, the U parameter follows the ‘root’ or start of the cross-section location and goes around the center axis on the surface. For hollow BoR geometries, the W location follows the convention of first marching along the inside of the part toward the leading edge and then along the outside of the part toward the trailing edge. Otherwise, when setting Upper or Lower design policy, the W location marches from the trailing edge (aft) to the leading edge (forward).

Introduction

The Body of Revolution component is very handy when you want to make an axisymmetric shape based on a single cross-section. Some examples include engine nacelles, complex tanks or stores, or even unconventional shapes like a candlestick or football. Note that by definition, you may not adjust or ‘squash’ this component to make a more realistic engine nacelle. This component is purely axisymmetric similar to a “Revolve” CAD operation.