A parachute that can be deployed more quickly than before, a safety device provided with the parachute, and a flight vehicle provided with the safety device. An umbrella body of the parachute has a substantially hemispherical shape including a first impact buffer, a second impact buffer, and a shape holder, and includes a vent formed at a top portion and an umbrella edge portion constituting an opening. The first impact buffer and the second impact buffer are formed in a state where each of a plurality of base fabrics is disposed such that a center line L connecting a vertex P and a geometric center position of each of the base fabrics intersects an extending direction of a warp thread and a weft thread of the base fabric.

Described are a parafoil for operation at high altitudes, in low density air, or at low airspeeds, and methods for opening same. The parafoil comprises flexible members connected to the parafoil canopy. When the parafoil canopy is in a stowed configuration, the members are deformed, storing elastic energy. When the canopy is released from its stowed configuration, the members spring back to their undeformed shapes, thereby opening or assisting with opening the canopy. The flexible members may also be attached to a base structure, which is attached to the payload. The members may comprise rods or hollow tubes that can be flexed using a fulcrum near the base structure, or a spacer plate, so that the ends connected to the canopy are restrained by a parachute bag containing the stowed or packed canopy. The parachute bag can be opened prior to or during detachment of the parafoil from the flight vehicle.

A parachute that can be deployed more quickly than before, a safety device provided with the parachute, and a flight vehicle provided with the safety device. An umbrella body of the parachute has a substantially hemispherical shape including a first impact buffer, a second impact buffer, and a shape holder, and includes a vent formed at a top portion and an umbrella edge portion constituting an opening. The first impact buffer and the second impact buffer are formed in a state where each of a plurality of base fabrics is disposed such that a center line L connecting a vertex P and a geometric center position of each of the base fabrics intersects an extending direction of a warp thread and a weft thread of the base fabric.

The technology relates to techniques for drogue deployment for a lighter than air (LTA) vehicle descent. A drogue deployment system for an LTA vehicle descent can include a drogue comprising a drogue parachute coupled to a carrier. A spring can be configured to launch the drogue from a launch tube directed outward from an apex of the LTA vehicle in an acute angle from a horizontal plane. A core can be placed around the launch tube and placed around the spring, the core compressing the spring and holding the spring in a compressed state prior to deployment, and a riser can couple the carrier to the envelope of the LTA vehicle. In some cases, the drogue deployment system can comprise two or more drogues, wherein intervals between the two or more drogues can be selected such that horizontal components of drogue deployment forces approximately cancel out.

The technology relates to techniques for drogue deployment for a lighter than air (LTA) vehicle descent. A drogue deployment system for an LTA vehicle descent can include a drogue comprising a drogue parachute coupled to a carrier. A spring can be configured to launch the drogue from a launch tube directed outward from an apex of the LTA vehicle in an acute angle from a horizontal plane. A core can be placed around the launch tube and placed around the spring, the core compressing the spring and holding the spring in a compressed state prior to deployment, and a riser can couple the carrier to the envelope of the LTA vehicle. In some cases, the drogue deployment system can comprise two or more drogues, wherein intervals between the two or more drogues can be selected such that horizontal components of drogue deployment forces approximately cancel out.