2. Hayate

3. Design Innovation Chassis Fairing Three-wheeled “stable” vehicle
Rigid space truss frame design
Efficient Drivetrain
Fairing
Extensive aerodynamic analysis
Finite element analysis of entire shell and at mounting points
Use of advanced composite materials
Rear hub
spacers
chainrings

4. Chassis Analysis Chassis Sable frame deflection analysis
Mathcad for steering, acceleration
Excel road race spread sheet
Roll Bar
Hip Location, (one on other side also)
Under the Axles

5. Deflection at mounting points
Fairing Analysis
2D Shape iteration
Final fairing shape
Ducting analysis
Forces on fairing at chassis mounting points
Deflection at mounting points

6. Testing Chassis Prototype Fairing 1/12 Scale Model Brake test
Turning/tipping test
Fairing 1/12 Scale Model
Oil test: transition form laminar to turbulent air flow
Smoke test: determine where separation occurs

7. Testing Chassis Fairing Integration Turning Braking Steering
General fit
Mounting
Any other interference

8. Building a Safe Hayate Hayate Vehicle Rollbar
4 point harness rider restraint
Stability of three wheel design
Optimum visibility
Rider cooling to minimize fatigue
Design Criteria
Horizontal
-5

9. Overall Results Criteria Goal Actual Min Turning Radius
Braking Distance
Max. Cr
Max Frame Deflection
Fairing Cd*A
Visibility
Drivetrain Efficiency
25 ft
20 ft at 15 mph
0.0077
0.5 in
1.1 ft2
180° side to
side, -10° to
30° off horiz.
95%
20 ft
Satisfied
0.5 in
1.0 ft2
180° side to
side, -10° to
30° off horiz.
97%