Rocket NoseCone

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Rocket NoseCone.svg Rocket NoseCone

Menu location
Rocket → Nose Cone
Workbenches
Rocket Workbench
Default shortcut
None
Introduced in version
0.19
See also
None

Description

Nose cones come in a variety of shapes and sizes, most of which are difficult to model without programming. For many rocket builders, this makes the process unworkable. This command allows for nose cone creation using simple properties combined with a specialized task dialog.

Usage

  1. There are several ways to invoke the command:
    • Press the Rocket NoseCone.svg Nose Cone button.
    • Select the Rocket → Rocket NoseCone.svg Nose Cone option from the menu.
    • Double click on a Nose Cone object in the model view.
  2. Set options and press OK.

Options

Nose Cone Types

The theory behind the various nose cone shapes is explained here: Nose cone design

Supported nose cone types include:

  • Cone.

NC Cone small.png

Conical

  • Ogive.

NC Ogive small.png

Ogive

  • Elliptical.

NC Elliptical small.png

Elliptical

  • Parabola. The shape commonly thought of as a parabola is not generated using a parabolic series, but a power series with a coefficient of 1/2. This is explained in the Wikipedia article.

NC Parabola small.png

Parabola (Power series with coefficient 1/2)

  • Parabolic series. This shape is constrained using a coefficient, as explained in the Wikipedia article.

NC Parabolic 0.5 small.png

Parabolic series with coefficient 1/2

NC Parabolic 1 small.png

Parabolic series with coefficient 1

  • Von Karman. A Haack series with a coefficient of 0

NC Karman small.png

Von Karman (Haack series with coefficient 0)

  • Haack Series. This shape is constrained using a coefficient, as explained in the Wikipedia article.

NC Haack 0.33 small.png

Haack series with coefficient 1/3

NC Haack 2 small.png

Haack series with coefficient 2

Nose Cone Styles

Nose cones can be drawn in one of 3 styles

  • Solid: The cone is constructed as a solid piece, such as out of balsa wood.

NC Solid small.png

  • Hollow: The cone is hollow on the inside having a specified thickness. The end is not sealed.

NC Hollow small.png

  • Capped: Similar to hollow, except the end is sealed.

NC Capped small.png

Shoulders

Nose cones can be created with or without shoulders
NC Ogive small.png

Ogive with shoulder

NC No Shoulder small.png

Ogive without shoulder

Properties

Rocket Component

These parameters are provided for information and have no effect on the design of the component.

  • DataManufacturer: Manufacturer when known
  • DataPart Number: Manufacturer part number
  • DataDescription: Description of the component
  • DataMaterial: Material when known

Nose Cone

  • DataNose Type: Defines the shape of the nose cone using the coefficient when required, see Options
  • DataNose Style: Defines the style of the nose cone, see Options
  • DataLength: The length of the nose cone without the shoulder
  • DataRadius: The radius of the base of the nose cone
  • DataThickness: When the Nose Style is hollow or capped, this will determine the wall thickness of the nose cone
  • DataCoefficent: Combined with the Nose Type, this defines the shape of the nose cone, see Options
  • DataShoulder: True when the Nose Cone includes a shoulder
  • DataShoulder Length: The length of the shoulder
  • DataShoulder Radius: The radius of the shoulder. This must be less than the radius of the Nose Cone
  • DataShoulder Thickness: When the Nose Style is hollow or capped, this will determine the wall thickness of the shoulder
  • DataResolution: Used internally, this parameter defines the number of data points to use when drawing the outline of the nose cone

Scripting

See also: Category:API and FreeCAD Scripting Basics.

TBD

Tutorials and Learning

Rocket Workbench Nose Cones Tutorial on YouTube


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