Team HazardHawk

Team HazardHawk 2008

The HazardHawk

Team HazardHawk 2008

Last Week

CNCBody - CompleteMounts/Braces - CompleteTurret - Incomplete

Complete Prototype Performance RequirementsComplete

Finalize CAD of Arm MechanismComplete

Team HazardHawk 2008

Concept Status Arm Mechanism

Fully Extended Dimensions:

○ 30” tall○ 30” out

Material○ Carbon Fiber○ PVC○ Epoxy

Weight○ 5.67 lb

3 degrees of freedom

Analysis and Design General calculation of static and dynamic

forces imposed on the arm Finite Element analysis Optimization

Data: length determination

Normalzed Yeild Stress vs. Member 2 Length - w = 5 rad/sec

0.0

2.0

4.0

6.0

8.0

10.0

12.0

18 20 22 24 26 28 30 32 34 36 38 40 42

Member 2 Length [in]

No

rmal

ized

Yei

ld S

tres

s (s

_yei

ld /

s_m

ax)

Carbon Fiber

Plywood

HDPE

PVC

Data: material determination

Displacement versus length for Member 2

0

1

2

3

4

5

6

7

8

9

10

11

12

18 20 22 24 26 28 30 32 34 36 38 40 42

Length [in]

Dis

pla

cem

en

t [i

n]

Carbon Fiber

Plywood

HDPE

PVC

Parts Motor Selection

12V DC Bi-Polar Stepper (GL-S6600) x 2

○ 1.9 lb-in torque○ 57 rpm○ 20 kW

Team HazardHawk 2008

Gear Selection Material:

composite plastic Number of Teeth:

15 Pressure angle:

20o

Pitch Diameter: 0.4844”

Action Items Assemble the vehicle body

This will be completed on 3/18

Order parts for armThis will be completed on 3/18 with desired delivery

before 3/25

Gather electronics This will be completed by 3/20

Team HazardHawk 2008

Team HazardHawk 2008