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Fin

Launch Guide

Rocket Workbench

Description

Fins are used to aerodynamically control the direction of flight. A fin can is a complete assembly including fins and body tube, often fitted over the outside of the main rocket body tube. Optionally, a fin can may include a launch lug.

A fin can with launch lug

Usage

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

Options

Fin Options

Fin options for the fin can are the same as for individual fins. See Fin for more details

However due to the one piece nature of fin cans, they do not have the option to include Through The Wall (TTW) tabs.

Fin Can Options

Launch Lug Options

Properties

Fin Can

• DANEFin Type: Defines the shape of the fins.
• DANEHeight: The fin height.
• DANEProfile: The sketch associated with the custom fin type.
• DANERoot Chord: The distance between the fin leading and trailing edges at the root
• DANERoot Cross Section: The cross section shape of the fin at the root, see Options
• DANERoot Length 1: Usage depends on the Fin Root Cross Section and will apply to a taper length or similar, see Options
• DANERoot Length 2: Usage depends on the Fin Root Cross Section and will apply to a taper length or similar when multiple values are required, see Options
• DANERoot Per Cent: Expresses the Fin Root Length 1 and Fin Root Length 2 properties as a percentage of the Fin Root Chord
• DANERoot Thickness: Maximum thickness at the root of the fin
• DANESweep Angle: The angle of the front of the fin, with a vertical front being 0 degrees. This may be negative. Setting this value will cause the Sweep Length to be adjusted.
• DANESweep Length: The distance from the front of the fin root to the front of the fin tip along the x axis. This may be negative. Setting this value will cause the Sweep Angle to be adjusted.
• DANETip Chord: The distance between the fin leading and trailing edges at the tip
• DANETip Cross Section: The cross section shape of the fin at the tip, see Options
• DANETip Length 1: Usage depends on the Fin Tip Cross Section and will apply to a taper length or similar, see Options
• DANETip Length 2: Usage depends on the Fin Tip Cross Section and will apply to a taper length or similar when multiple values are required, see Options
• DANETip Per Cent: Expresses the Fin Tip Length 1 and Fin Tip Length 2 properties as a percentage of the Fin Tip Chord
• DANETip Thickness: Maximum thickness at the tip of the fin

Rocket Component

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

• DANEDescription: Description of the component
• DANEManufacturer: Manufacturer when known
• DANEMaterial: Material when known
• DANEPart Number: Manufacturer part number

Tutorials and Learning

Rocket Workbench Fins Tutorial on YouTube

Fin

Launch Guide

Rocket Workbench