dump a lot of fiberglass with a resin, and the fibers make the force properties even across the maeterial
continuous fibers
unisotropic
sheet laminates
if these are carbon fibers as part of my sheet laminates
resin sandwiched between
heat will travel along the sheets, so it is unisotropic
These properties need to be taken into consideration, its always a good example to see
Structural integrity
carbon fiber, is structurally good when layered
dont put all the fibers in the same direction, but make them more off axis
this makes it more isotropic.
This helps reduce
Composite tubes
Consider all of the properties of your material
for example, carbon fiber is not rf transparent
want to make sure that the material is not having consequences to using it
Shaping carbon fiber
the carbon fiber is cloths, so you can put it in any shape that you want.
fiberglass you cant tell which direction the fiber is in
for tubes, they have a process called winding, where they have one long string of material
and they roll it around the tube back and forth
so if we have a tube made of fiberglass, then the fibers run like this.
Shock cords and bulkheads
The shock cord will zipper through the tube
destroy the tube, so it wont work well, but you can fix it with epoxy
Glassing
Composite materials are essentially sheets of a material, with epoxy infused inside the layers.
When we buy the plates for the fins, we dont do that so we just by it.
composite materials are very structually sound
when we attach the fins, the fillets, here
basically we're gonna have layers of composite materials that will be stacked on top of each other around the fins, to make it one piece of composite material
basically creating a curved plate of fiberglass.
Glassing Vaccum Baggin
so we have a lot of pressure in the air around us, so when glassing, just vaccumbag the fins after glassing to apply a crazy ammount of pressure.
you can apply weight,
you can put like a vaccum bag
the vaccum bag with more layers was significantly thinner
the awesome part is that pressure is a scalar field, so the pressure is evenly applied from all sides.
do this very careful bagging, to apply an even force around the rocket.