Item 0900

DESIGN: UniCopter ~ Dimension, Area & Drag - Dimension & Area - Plan, X-Y plane

Drawing:

Grid is 3" x 3"

Each radius is 9.6" greater than the previous. This was arrived at by dividing the 8ft (96") rotor radius by 10.

Body Axis System is used.

Origin of Coordinates

Horizontal stabilizer in drawing is totally incorrect.

Indicates a calculated field.

 Fuselage:

 

Physical Parameters:

Symbol:

 Value:

 

 

 

 

 

 

 

Arm Length:

 

 

 

 

Longitudinal (a.c. to origin)

xF

 ??.0

 ft.

 

Lateral (a.c. to origin)

yF

 0.0

 ft.

Note The plan view of the fuselage could have a different aerodynamic center to origin length on the longitudinal axis then the side view. The symbol above xF is the same for both

The Projected Area [PA] is the area in square feet that is subjected to downwash from the rotor during hover. It is used in Momentum Theory an is estimated at 18 sq-ft for the UniCopter II.

Horizontal Stabilizer:

 

Physical Parameters:

Symbol:

Value:

 

 

Span

bH

4.0

ft.

 

Root chord

crH

1.25

ft.

 

Tip chord

ctH

1.0

ft.

 

Area

AH

4.5

ft2.

 

Taper ratio

λH

0.8

 

 

Half chord sweep angle

Λc/2H

3.56

deg.

 

Aspect ratio

ARH

3.56

 

 

Horizontal distance from main rotor

x/RH

8.33

 ft.

 

Vertical distance from main rotor

z'/RH

2.4

 ft.

 

Arm Length:

 

 

 

 

Longitudinal (a.c. to origin)

xH

 8.33

 ft.

 

Lateral (a.c. to origin)

yH

 0.0

 ft.

Back to top | UniCopter Home Page

Last Revised: July 4, 2004