0674

MAKE: SynchroLite ~ Rotor - Blade - Composite - VR-7b - Core

Drawing:

Notes:

 Material:

Rohacell

Rohacell

Hexcel

Hexcel

Hexcel

 

51

71

HRH-10

HFT

Korex

 

 

 

3/16 -3

3/16 - 3

3/16 - 3

Density

3.1

4.4

3.0

3.0

 3.0

Tensile Strength

270

398

 

 

 

Compressive 

 

 

 

 

 

__Strength (psi)

128

213 

235/325

275/365

280/280

__Modulus (ksi)

 

 

17

34

 

Plate Shear -

 L Direction

 

 

 

 

__Strength (psi)

 114

 185

 160/200

155/200

200

__Modulus (ksi)

 

 

 6.5

19

20

Plate Shear -

  W Direction

 

 

 

 

__Strength (psi)

114

185

80/100

80/100

115

__Modulus (psi)

 

 

3

9

9

Rohacell:

It appears that it may not bond well to the composite.

At 350 degrees F it will expand. This could be good for cure and also it might allow the foam to be cut without twist then twisted in the mold and the cure removing the torsion. 

Aluminum honeycomb will probably require fiberglass facing on both ends.

 

Special Tool: [Special Tool - Core Cutter - LAYOUT] Document 0668 Drawing 0668

 

Method of Manufacturing:

Mill bottom surface of core.

Invert base in Core Cutter table.

Invert Core.

Mill top surface of core.

Mill groove for Leading edge weight tube?

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Last Revised: February 5, 2000