Item 0858

DESIGN: UniCopter ~ Rotor - Blade - VR-7mod - Spar [old]

Information related to the load carrying capability of the blade and its rigidity.

Drawing:

 

Sizing of Spar @ VR-7 12%:

 

Zone:

@ Tip:

 

 

Volumn: *

Centroids

Distance:

 

 

Upper:

Lower:

 

1

.7

.2

.125"

 

2

1.1

.4

.18"

 

3

1

.5

.27"

 

4

1

.5

.3"

 

5

1

.5

.4"

 

6

1

.5

.43"

 

7

1

.5

.44"

 

8

.9

.5

.42"

 

9

.9

.5

.39"

 

10

.8

.5

.35"

 

11

.8

.5

.3"

 

12

.75

.4

.29"

 

13

.6

.4

.28"

 

14

.5

.3

.27"

 

15

.25

.25

.24"

 

16

.2

.2

.21"

 

17

.15

.2

.18"

 

18

0

0

0

 

19

0

0

0

 

20

0

0

0

 

21

0

0

0

 

Total:

12.65

6.85

 

 

 

19.5 = 1.219 sq-in.

 

 

 

Average (approx):

0.30

* Volume is number of 1/4" squares.

Miscellaneous Notes:

Spar to utilize pultruded carbon, to achieve highest possible strength.

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Last Revised: March 26, 2001