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Materials

Airframe Materials

Body Tubes

Property Value
Material Kraft paper
Wall Type Heavy wall
Surface White glassine overwrap
Spiral Tight wound

Characteristics:

  • Easy to mark with pencil
  • Tight spirals minimize filling work
  • White surface shows construction marks clearly
  • Can be reinforced with fiberglass if desired

Centering Rings & Bulkheads

Property Value
Material Aviation plywood
Cut Method Laser cut
Finish Requires light sanding on edges

Fins

Property Value
Material Aeronautical birch plywood
Cut Method Laser cut
Profile Swept-back curved
Grain Oriented for maximum strength

Nose Cone Material

Property Value
Material Polypropylene plastic
Flexibility Moderate flex (impact resistant)
Paint Adhesion Requires adhesion promoter

Painting Polypropylene

Polypropylene does not accept paint well. Use:

  1. Clean surface thoroughly
  2. Apply adhesion promoter (plastic primer)
  3. Apply regular primer
  4. Paint as normal

Recovery Materials

Parachutes

Property Value
Material Thin-mill ripstop nylon
Feel Soft, silk-like
Shroud Lines Double-looped at canopy
Packing Very compact

Shock Cord

Property Value
Type Tubular nylon
Color Fluorescent orange
Visibility High (aids recovery)

Chute Protectors

Property Value
Material Nomex cloth
Size 12" diameter
Quantity 2 (one per bay)
Reusability Fully reusable
Application Recommended
General Assembly 5-minute epoxy
Fin Fillets 30-minute epoxy or Rocketpoxy
High-Stress Joints JB Weld or 30-minute epoxy
Motor Retainer High-temperature epoxy (JB Weld)
Quick Tacks Thick CA (cyanoacrylate)

Material Strengths

Construction Philosophy

The Peregrine uses traditional rocketry materials:

  • Proven reliability
  • Easy to work with
  • Familiar to most builders
  • Good strength-to-weight ratio
  • Economical

For extreme applications, tubes can be reinforced with fiberglass cloth.