Design Project 2: Four Arm Drone

Prepared By: Ahmed Al Dobouni

Majed Noor

College of Technology

Department of Mechanical Engineering Technology

MET 461 – Computer Integrated Design & Manufacturing, Fall 2015

What is a four Arm Drone?

It is a device that can be used for entertainment purposes, spying purposes,

and commercial purposes.

Statement of Problem

The goal of the project was to demonstrate how to design a four arm

drone.

Meeting the specifications.

Applied stress should be reasonable with respect to the yield strength, and

deflection should be as less as possible.

Design Objective Designing the structure of a four arm drone, but performing the FEA study

on only one arm

Weight of whole device = 1000g

Approximating the weight of the battery, motor, and other the components.

Scaling of dimensions.

1 cm on the print out of the four arm drones equals 2.4 cm as an actual

measurement.

Design Objective

Description The Picture Measurements (cm) Actual Measurements (cm)

Distance from Y to X 10.90 26.165

Distance from A to B 5.2 12.48

Distance from C to D 3 7.2

Distance from X to C or D 1.5 3.6

Design of the Arm

Design of the Base

Methodology

The applied load at the end of the arm drone was 4.5G (four and half times

the gravitational force)

The applied load would be 250 grams x 4.5 = 1125 grams.

1125 grams x = 11.025 N

Static Fixture & Applied Load

Installed BoltsEach one of the bolts that were installed had the

following specifications:

Torque = 0.05 N.m

Bolt Strength = 620422000 N/m^2

Safety Factor = 2

Friction Factor = 0.2

Head Diameter = 4.5 mm

Nut Diameter = 3 mm

Thread Size = 0.5 mm

Material Specifications This material has a Mass Density of 2700 Kg/m^3

An Elastic Modulus of 6.900000067e+010 N/m^2

Mass Properties of the Assembly The weight of the whole assembly = 124.14 grams

Mass Properties of the One Arm Drone

Stress Analysis The Yield Strength value is 2.750e+008 N/m^2

The Normal Stress value is 2.142e+008 N/m^2

Displacement Analysis The Displacement is 2.112e+001 mm

Conclusion A four arm drone can be used for entertainment purposes, spying purposes,

and commercial purposes

An arm drone should always meet the specifications.

The applied stress should be reasonable with respect to the yield strength,

and the deflection should be as less as possible

The design team was able to design a relatively light arm drone that weighs

31 grams