[nikitaga]

Parachute opening needs to balance between speed of deployment (because the ground is coming up) and G-force shock (because humans are squishy, and even the aircraft structure they're attached to has a limit).

Cirrus flies fast, so its parachute has a slider / limiter on it to reduce the speed of opening to keep the G shock manageable. On the other hand, since the top speed of this Jetson device is pretty low at 63mph, their parachute must have no slider and can probably be deployed from as little as 200 ft in ideal conditions. Depends on the exact model, your decision/reaction time, aircraft speed, attitude, and stability at time of deploy, etc.

The parachute should cost less than $5K, and its weight is not included in the 255lb weight limit (it's an FAA part 103 aircraft), so it's pretty much a no-brainer to add it to this aircraft, even if it's not very useful in very low level flights.