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IED Unit 4 • Lesson 4.5

Mechanisms and Types of Motion

Focus question: How do mechanisms change or control motion in aerospace systems?

Mission Briefing

Today’s Plan

Use this page with the lesson presentation, your engineering notebook, and the tools or evidence assigned for Classify Mechanisms by Motion.

Learning Targets

  • Distinguish linear, rotary, oscillating, and reciprocating motion.
  • Explain how a mechanism changes direction, speed, force, or motion type.
  • Connect motion choices to aerospace systems such as control surfaces, landing gear, or payload doors.

Success Looks Like

You can identify motion types and explain how mechanisms transfer or transform motion.

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Opening Prompt

How do mechanisms change or control motion in aerospace systems?

Connect your response to the decision, evidence, or quality standard required for Classify Mechanisms by Motion.

Reveal: useful engineering move

This lesson is ready to move forward when the evidence meets this standard: Motion classifications describe what the parts actually do rather than only naming the device.

Core Skill

What We Are Practicing

Key Idea 1

Mechanisms make motion useful and controlled.

Key Idea 2

Motion can be transferred, transformed, limited, or amplified.

Key Idea 3

A mechanism choice should match the function the system must perform.

Your Task

Classify Mechanisms by Motion

Analyze examples to determine their input motion, output motion, and mechanical purpose.

  1. Identify the moving components in each example.
  2. Classify input and output motion as rotary, linear, oscillating, or reciprocating.
  3. Describe how the mechanism changes or transfers motion.
  4. Select one mechanism type that may be useful later and explain why.

Quality check: Motion classifications describe what the parts actually do rather than only naming the device.

Lesson Interactive

Classify Types of Motion

Identify motion by following the path of the output component.

SystemObserved output motionClassification
Access-panel hingeTurns around a fixed axis
Payload drawerMoves straight in and out
Cam followerMoves repeatedly up and down
Cooling fanTurns continuously
Describe the motion of the output part: translation, continuous rotation, back-and-forth translation, or oscillation.
What You Will Submit

Mechanism Motion Analysis

  • One completed input/output motion chart for the assigned mechanisms.

Submission standard: Motion classifications describe what the parts actually do rather than only naming the device.

Resources

Lesson Resources

Presentation

Lesson 4.5 PowerPoint

Use the lesson slides for guided practice, interactive checks, and the exit ticket.

Course Hub

Introduction to Engineering Design

Return to the IED course hub for units, resources, certifications, and current course information.