Learning Targets
- Write a clear evidence-based problem statement.
- Document a proposed change and identify affected parts or records.
- Create measurable acceptance criteria and a verification method.
IED Unit 1 • Lesson 1.21
Engineering Change Requests
Focus question: How do engineers document a proposed design change without losing control of the original design?
Mission Briefing
Today’s Plan
Use this page with the lesson presentation and your engineering notebook.
Success Looks Like
The request separates the current design from the proposed revision and includes a testable success condition.
LaunchLearnApplyCheckSubmit
Opening Prompt
Why should an engineering change be documented instead of made directly to the original design?
Think first, then be ready to share a short response that connects the question to engineering communication.
Reveal: why this matters
A controlled record preserves the current design, explains the reason for the change, identifies affected information, and makes the revision traceable and testable.
Core Skill
What We Are Practicing
An Engineering Change Request records a proposed revision without erasing the current design.
The proposal should be supported by observations, measurements, fit issues, or user needs.
Acceptance criteria define how the team will decide whether the change works.
Lesson Interactive
Review an Engineering Change Request
Complete the four evidence fields for the sample change, then choose the appropriate reviewer decision. Each field needs enough detail for another engineer to act.
ECR Completeness4/4 complete
Review question: Does the verification method define a measurable acceptance criterion, or only say that the test will be repeated?
A complete ECR can still require revision when its success criteria are not measurable.
Your Task
Develop an Engineering Change Request
Identify one evidence-based improvement to the rocket assembly and document it as a controlled proposal.
- Define the current problem using observations, measurements, fit issues, or user needs.
- Create a before-and-after sketch showing the proposed change and affected components.
- Identify impacts on relevant parts, materials, assembly steps, cost, risk, or performance.
- Write measurable acceptance criteria and a test or inspection method.
Quality check: The request must be specific enough for another engineer to implement and verify.
What You Will Submit
Rocket Engineering Change Request
Submit one controlled change document and one decision summary.
Submission standard: Preserve the original design record and identify which documents would need a later revision.
Resources
Lesson Resources
Lesson 1.21 PowerPoint
Use the lesson slides for guided practice, interactive checks, and the exit ticket.
Introduction to Engineering Design
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