A cargo parachute system is the equipment used to drop supplies and equipment from an aircraft and land them softly on the ground. Instead of a person under the canopy, the load is a rigged pallet, container, or vehicle. In military and logistics terms this is often called an aerial delivery system or a Container Delivery System (CDS).
The idea is simple: when a runway is unavailable, unsafe, or too far away, you fly over the target and release the cargo. A cargo airdrop parachute slows the descent so the load arrives intact.
The parts of a cargo parachute system
Most systems share the same building blocks, whatever their size:
- Main canopy — the large parachute that carries the load down at a safe speed.
- Extraction or stabilising parachute — a small drogue that pulls the load clear of the aircraft and deploys the main canopy.
- Rigging and suspension — the slings, risers, and connectors that link the canopy to the load.
- Platform or container — the base the cargo is strapped to, sized for the aircraft floor and doors.
- Release hardware — the mechanisms that separate the parachute after landing.
The PGS-500 cargo parachute system follows exactly this pattern, and even ships with a spare canopy in the kit.
How the deployment works
Once the aircraft reaches the drop point, the load is moved to the open ramp or door. An extraction parachute is released into the slipstream; it drags the platform out of the aircraft. As the platform falls clear, the main canopy opens, inflates, and the cargo settles into a stable, slow descent. The whole sequence takes only seconds. For a fuller walk-through, see how cargo airdrop works.
Low-velocity vs high-velocity drops
Systems are broadly split into two families. Low-Velocity Air Drop (LVAD) uses a full canopy for a gentle landing, which suits fragile or sensitive stores. High-velocity systems use a smaller canopy and heavier packaging for a faster, harder landing where the contents can take it. The PGS-500 is a low-velocity system for loads up to 500 kg.
Common use cases
- Humanitarian aid to areas cut off by flood, earthquake, or conflict.
- Remote resupply for sites with no road or runway access.
- Military logistics — ammunition, rations, fuel, and equipment.
- Disaster relief where speed matters more than precision landing.
In short, a cargo parachute system turns any suitable transport aircraft into a delivery platform for places that ground transport cannot reach. If you want the detail on a specific 500 kg system, read the PGS-500 specifications explained.