Brief description

A parachute is a device used to slow the motion of an object through an atmosphere by creating drag. It allows for safe descent from great heights. It allows for the delivery of supplies and the safe landing of people from aircraft or high points.

Use / Function

Its practical purpose is to provide controlled descent:

• Primary use: Safe descent for people and equipment from heights.
• Secondary uses: Slowing down fast-moving vehicles (drag chutes), stabilization.
• Scale: Individual and logistics.

Operating principle

Atmospheric Drag:

• It exploits the resistance of air against a large surface area.
• The canopy captures air, creating a high-pressure zone underneath, which counteracts the force of gravity.
• Step by step: Deployment → Canopy inflation → Increased air resistance → Terminal velocity reduction.

How to create it

• Minimum functional version: A large sheet of lightweight, strong fabric connected by multiple lines to a central load.
• Essential: Strong, non-porous fabric (silk or nylon) and high-tensile strength lines (ropes).
• Optional: Pilot chute for deployment, harness for the user.
• Technical level: Intermediate.

Materials needed

• Essential materials: Silk or Fabric, Rope.
• Tools: Sewing equipment, cutting tools.
• Possible substitutes: Canvas (heavy), specialized thin leather (very heavy).

Variants and improvements

• Early versions: Rigid frames to keep the canopy open.
• Modern versions: Ram-air parachutes (steerable), square chutes.
• Improvements: Increased steerability, lighter and stronger materials, reliable deployment systems.

Limits and risks

• Deployment failure: If it doesn’t open correctly (tangled lines).
• Opening shock: Sudden deceleration can cause physical injury or structural failure.
• Weather: Strong winds can carry the user far from the target or cause the canopy to collapse.
• Minimum altitude: Needs enough height to deploy and slow down before impact.