g 12 density ?

anyone know where I can find or what is the density of g 12 ?

Thanks !

bobby_hamill said:

anyone know where I can find or what is the density of g 12 ?

Thanks !

Click to expand...

1.8 g/cc +/-0.05 est. It depends on the resin and %fiber loading.

Bob

Bob

Thanks for the reply as I am using Open Rocket flight sim and wanted the mass of Hawk mountain G12 air frame
the Open Rocket flight sim has an option for "fiberglass" with a mass of 1.07 oz/in 3.

Thanks !

Bob

Attached is the results of my calculations for the Hawk Mountain 4 inch and 6 inch airframes



Bobby

View attachment Hawk Mountain Rocketry.doc

bobby_hamill said:

Bob

Attached is the results of my calculations for the Hawk Mountain 4 inch and 6 inch airframes

Bobby

Click to expand...

1.8 g/cc = 1.04 oz./cubic inch which is about 45% fiber and 55% epoxy typical of a medium strength fiberglass composite. A higher strength fiberglass composite will have a density >2 g/cc or 60% fiber loading, where as a lower strength fiberglass composite will have a density <1.73 g/cc or 40% fiber loading.

Again, it depends on the fiberglass loading, the density of the epoxy and the density of the glass.

The density of cured West type epoxy is 1.17 g/cc. The density of e-glass is 2.58 g/cc.

The density of the composite is 1.17*e + 2.58*g = 1.15*(1-g) + 2.58*g where the % of glass ranges from 0% < g < 100%

See Table Below