RC Airplane

Robert SchuldAakash SoniAlan Strimbu

Table of Contents Timeline Gantt Chart Problem Statement Background Customer Scope Customer Requirements Deliverables Brainstorming Research Identify Criteria & Constraints Explore Possibilities Pros and Cons Select an Approach CAD Bill of Material Build Process Test Criteria Test Plan Prototype Test Results Lessons Learned Summary

Timeline

Gantt

Problem Statement

Students lack proficiency in Engineering

By creating an RC airplane: Gain knowledge Gain experience for college environment

Background

Customer

Mr. Pritchard

Mrs. Brandner

Scope

Customer Requirements Mr. Pritchard

3 tests on 3 different materials Strength test on material/prototype

Mrs. Brandner Complex calculations using physics and calculus Submit engineering notebook

Additional Must fit in technology room Must be tested outside school property

Deliverables

Mr. Pritchard RC Airplane prototype Final Report Design Notebook(s) Powerpoint Presentation

Mrs. Brandner Calculations

Brainstorming

Research

Identify Criteria & Constraints

Criteria Applications of Calculus

Calculations for d(t), v(t), a(t) Calculations for lift force Calculations for engine torque Calculations for thrust Calculations for types of materials Optimization with different materials and

structures Submit engineering notebooks

Identify Criteria & Constraints Criteria

Applications of Technology Application of the 12 step design process

Testing procedures for different types of materials and their strengths

Submit final report and Power Point

Submit airplane prototype

Submit CAD drawings

Identify Criteria & Constraints

Criteria Control Panels Flying tests must be outside school

property Constraints

Must fit inside technology room 3 ft. wingspan for detail, but not too

large

Explore Possibilities

Pros and Cons

Select an Approach

CAD

Bill of MaterialPART PART DESCRIPTION COST PER UNIT QUANTITY TOTAL COST

Power 15 Brushless Outrunner Motor

950 Kv, 575 Watts $79.99 1 $79.99

3-channel controller Hitec Neon SS 72 MHz

$67.99 1 $67.99

Landing Gear Elite Mini UltraStick $12.95 1 $12.95

Servos HS-311 6.0 Volt $11.99 2 $23.98

Carbon fiber tube 0.210” outer diam. x 0.132” inner diam. x 40”

$7.99 1 $7.99

EPS Foam ¾” x 14 ½” x 48” $9.49 1 $9.49

Propeller Speed 400, 5.25 x 6.25 $2.13 1 $2.13

Pushrods Fiberglass $8.95 2 $17.90

Balsa Wood ¼” x 36” $0.89 2 $1.78

TOTAL COST $224.20

Build Process

Test Criteria

Test Criteria for Prototype Safety Functionality (in air/on ground) Ease of use Aerodynamics Velocity Weight/Size Strength

Test Criteria

Test Criteria for Materials Foam

Strength Safety Compression/Tension Flexibility Weatherability (ability to withstand outdoor

conditions)

Test Criteria Test Criteria for Materials

Adhesive Weatherability Holding strength Drying time

Motor/Propeller Thrust Torque Voltage (if necessary) Weatherability Weight/Size Functionality

Test PlanTest Criteria How Tested Expected results Actual Results

Overall Plane Aerodynamics Look at the overall body of the plane and determine if any parts of the plane will decrease aerodynamics.

The plane will have sound aerodynamics and will have minimal drag.

Functionality Move all surfaces (rudder, elevators) and check for responsiveness.

All motorized parts of the plan will respond well.

Safety Check if the plane flies consistently in the air and doesn’t wobble.

The plane will be safe and won’t wobble.

Strength Hang weights on the wings and see if the flex too much or break. Put weights on other critical structures of the plane.

The plane will be able to support the weight and will not fracture.

Velocity While in the air, look at distance/time to determine the speed.

The velocity will be high enough to sustain flight.

Weight/Size Measure the overall plane’s dimensions. Put the whole plane on a scale.

Plane’s weight will be in proportion to its size.

Prototype

Test Results

Lessons Learned

Summary