Paraglider wing canopy and boyle’s air pump: what they have in common

1. Step 1. Paraglider wing canopy — is part of — Paraglider. A double-surface wing with air intakes, inflated by the oncoming air.
2. Step 2. Paraglider — is made of — Kevlar. The lines are Kevlar or Dyneema.
3. Step 3. Kevlar — is material for — Helmet. Modern ones are aramid.
4. Step 4. Helmet — is made of — Leather. Helmet liners and simple helmets were made of leather.
5. Step 5. Leather — is material for — Piston. They were sealed with a leather cup.
6. Step 6. Piston — is part of — Boyle’s air pump. A plunger.

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