Composite materials for payload shroud

In summary, We are looking to design a payload shroud for a large hobby rocket and have conducted an aeroheating analysis to determine the maximum temperature experienced during ascent. To size the shroud thickness, we need material property data such as thermal conductivity and emissivity for potential composite materials. The manufacturing technology for the chosen material should also be within time and cost constraints.
  • #1
engineer23
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We are looking at designing a 10" diameter, 48" long payload shroud (Ogive nose cone) for a large hobby rocket. We have done an aeroheating analysis based on the trajectory, so we have the max temp. experienced during ascent at several body points. We want to make the shroud out of composites and in order to size the shroud thickness, we need material property data (thermal conductivity, emissivity) for some yet-to-be identified candidate materials. What materials might we look at? I have access to the ASM materials databases, but I'm not really sure exactly what specific materials I should be targeting.

Any thoughts?
 
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  • #2
One answer is "target the materials where the manufacturing technology for the part is within your time and cost constraints". Making any part that size from composites is unlikely to be trivial, but some options are a lot more non-trivial than others unless you have access to the right specialist equipment.
 

FAQ: Composite materials for payload shroud

What are composite materials and why are they used for payload shrouds?

Composite materials are materials made up of two or more constituent materials with different properties. They are used for payload shrouds because they offer a high strength-to-weight ratio, making them ideal for lightweight spacecraft components. Additionally, they have excellent thermal and mechanical properties, making them suitable for the extreme environment of space.

What types of composite materials are commonly used for payload shrouds?

The most common types of composite materials used for payload shrouds are carbon fiber composites and fiberglass composites. Carbon fiber composites offer the highest strength and stiffness, while fiberglass composites are more affordable and easier to work with.

How are composite materials used to construct payload shrouds?

Composite materials for payload shrouds are typically made by layering sheets of reinforced fibers, such as carbon or fiberglass, with a matrix material, such as epoxy resin. This layered structure is then cured under heat and pressure to create a strong and lightweight composite material. The composite material is then shaped and molded into the desired form for the payload shroud.

What are the advantages of using composite materials for payload shrouds?

There are several advantages to using composite materials for payload shrouds. These include their high strength-to-weight ratio, their ability to withstand extreme environmental conditions, their durability and resistance to corrosion, and their ability to be customized and molded into complex shapes.

Are there any potential drawbacks to using composite materials for payload shrouds?

While composite materials offer many advantages, there are also potential drawbacks to consider. These include the high cost of materials and manufacturing, the need for specialized equipment and expertise, and the potential for delamination or damage during launch and in the harsh environment of space. However, these drawbacks can be mitigated through careful design and testing processes.

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