Technical Illustration is used widely in the Aricraft Industry and there is terminology that comes with its territory. Aircraft are so complex that every point and part is reference in relation to the F.R.P. (front reference Plane). The other references are in regard to WP or (Wing Planes). In other words where are the wings located and what is the distance from the front of the airplane. This distance is a reference point; a station point where an airplance can be re engineered, repaired or simply a part replaced at the station, whether it is the Bulkead Station, where the letters STA are used...numbering 1 and into the hundreds for large aircraft.CLick on this link for Tech Draw and this will augment your understanding of this lesson.

There are many types of airplanes varying in size from model airplanes to "Big Wide Ones" the Jet Liners, both commercial and passenger airplanes. In this lesson you will be using skills in CADD to create an illustration of reference planes.

Connecting Your Learning

As you work your way through this lesson, you should reflect on the following questions:

What the purpose of Reference Planes is to an Illustrator?
What is the point of an illustration?
What can the Illustrator do to have the drawing easily understood?

The State of Arizona has assembled Drafting standards to make sure that Instruction is thorough and well thought out by the instructor. By clicking on the hyperlink below will upload to your browser window the entirety of these standards. The standards that are addressed in this lesson are below the hyperlink.

1.0 USE BOARD DRAFTING EQUIPMENT, INSTRUMENTS AND MEDIA.

• 1.1 Analyze Drawing surfaces for Drafting
• 1.6 Demonstrate Sheet Setup skills

2.0 DEMONSTRATE SKETCHING, LETTERING, AND LINE SKILLS.

• 2.1 Demonstrate freehand sketching skills for drafting applications.
• 2.2 Demonstrate lettering skills.
• 2.3 Demonstrate line work.

6.0 DEMONSTRATE GEOMETRIC CONSTRUCTIONS

• 6.1 Measure Geometric Constructions.
• 6.2 Develop Geometric Constructions.

8.0 APPLY BOARD DRAFTING SKILLS TO COMPUTER-AIDED DESIGN/DRAFTING (CADD)

• 8.1 Demonstrate computer skills for a CADD system.
• 8.2 Create dimensional CADD entities.
• 8.3 Create 3 dimensional CADD drawings.

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The State of Arizona has also assembled Math standards and many of these apply directly to the vocational subject area of Drafting. Drafting is a very precise discipline and the use of mathematics is integral to design and manufacturing. Below are the math standards that are involved in this lesson

1M-P1. Compare and contrast the real number system and its various subsystems with
regard to their structural characteristics

• PO 2. Compare subsets of the real number system with regard to their properties
  (commutative, associative, distributive, identity, inverse and closure properties)

1M-P2. Construct, interpret and demonstrate meaning for real numbers and absolute

• PO 3. Solve real-world distance problems using absolute value
• PO 4. Determine, among the solutions to a real-world problem, which, if any, is reasonable
• PO 2. Define absolute value as the distance from the origin

4M-P1. Interpret and draw three-dimensional objects

• PO 1. Sketch prisms, pyramids, cones, cylinders and spheres
• PO 2. Classify prisms, pyramids, cones, cylinders and spheres by base shape and lateral surface shape.
• PO 3. Recognize the three-dimensional figure represented by a two-dimensional drawing.
• PO 5. Make a model of a three-dimensional figure from a two-dimensional drawing and make a two-dimensional representation of a three-dimensional object (models and representations include scale drawings, perspective drawings, blueprints or computer simulations)

4M-P4. Deduce properties of, and relationships between, figures from given
assumptions

• PO 1. Find similarities and differences among geometric shapes and designs using a given attribute (e.g., height, area, perimeter, diagonals and angle measurements)
• PO 2. Identify arcs, chords, tangents and secants of a circle
• PO 3. State valid conclusions using given geometric definitions, postulates and theorems
• PO 4. Represent pi as the ratio of circumference to diameter
  

1. Create a bulkead, wing and buttock stations 3 dimensionallly.
2. Render using materilas in CADD to see through one part of a 3d model into another.
3. Rotate 3 dimensional in CADD.
4. Render using shadows and light parameters.
5. Render a dwg. file to a jpeg and save.
5. Add text and text characters to illustrate a rendered drawing.

Key Terms

"click on the key on any of these terms and it will hyperlink to the course glossary"

isometric	fillet	ellipse	orthographic
counterbore	chamfer	bead-up	ellipse
countersunk	sections	glass box	rendering
Iso Ellipse	proportion	ellipse	Angstrom

 

Instruction

The following is the model that will be used for Lesson 12:

• Lesson 12: [Figure 5.55, page 74 of the Thomas Text. The Title of the figure is Aircraft Reference Planes].

I will explain this further in the lesson 12 media disc. Please insert the media disk and listen to lesson 12.

*Note: The Lessons are best viewed with real player and you can download the latest version by clicking on the words real player.

Your Text Book and Reading Assignments

Summary and Assessment