Techniques to deploy a parachute are disclosed. In various embodiments, a first projectile is configured to be propelled in a first direction, causing the parachute to be deployed. A second projectile configured to be propelled in a second direction is coupled to a line tethered to the parachute in such a way that a force in a direction opposite the first direction is applied to the line of the parachute when the second projectile is propelled in the second direction.

A multi-modal aircraft recovery system is disclosed. In various embodiments, the system includes a first aircraft recovery parachute having a first set of physical attributes optimized for a first set of conditions and a second aircraft recovery parachute having a second set of physical attributes optimized for a second set of conditions different from the first.

A multi-modal aircraft recovery system is disclosed. In various embodiments, the system includes a first aircraft recovery parachute having a first set of physical attributes optimized for a first set of conditions and a second aircraft recovery parachute having a second set of physical attributes optimized for a second set of conditions different from the first.

An automated aircraft recovery system is disclosed. In various embodiments, the system includes an interface configured to receive sensor data; and a control mechanism configured to: perform automatically a recovery action that is determined based at least in part on the sensor data. In various embodiments, the control mechanism may determine an expected state of an aircraft, determine whether a state of the aircraft matches the expected state, and in the event the state of the aircraft does not match the expected state, perform the recovery action.

Disclosed is a sonobuoy that houses at least one unmanned vehicle that may be launched from the sonobuoy. The sonobuoy may include a canister, a parachute, an unmanned vehicle, and a launch mechanism. The parachute may be disposed within an interior cavity of the canister proximate to a first end of the canister. The unmanned vehicle may be disposed within the interior cavity of the canister proximate to a second end of the canister. The launch mechanism may be disposed within the interior cavity of the canister and operatively coupled to the unmanned vehicle. The launch mechanism may be configured to launch the unmanned vehicle from the canister. The sonobuoy may further include a launch deployment mechanism that may be configured to orient the canister with respect to a surface after the sonobuoy impacts the surface in order to facilitate the launch of the unmanned vehicle.

A method, system, and device for predicting parachuting time in case of a sudden failure are provided to resolve a prior art problem that parachuting time of a parachutist in case of a sudden failure of an aircraft cannot be predicted accurately and efficiently. The method includes: obtaining input data; preprocessing the input data; determining whether an aircraft is in a sudden failure state; generating a movement track and a landing point range of parachuting; calculating a movement track and a falling point range of the aircraft after a parachutist performs parachuting, and impact force and a damage range after the aircraft falls; and obtaining a prediction result of parachuting time of the parachutist by a pre-constructed parachuting time prediction model. The method, system, and device can accurately and efficiently predict the parachuting time of the parachutist in case of the sudden failure of the aircraft.

Systems and methods to cut a closing loop to deploy a parachute. The system includes a cutter with a body with a cutter opening that extends through the body and a blade that is movable across the cutter opening. Processing circuitry is configured to signal the cutter to move the blade across the cutter opening. A mount includes a base, a retainer with a channel sized to receive the cutter, and a mount opening that extends through the mount and across the channel. The cutter is configured to fit within the channel with the cutter opening aligned with the mount opening to form a through-opening such that the closing loop extends through the cutter and the mount.

Systems and methods to cut a closing loop to deploy a parachute. The system includes a cutter with a body with a cutter opening that extends through the body and a blade that is movable across the cutter opening. Processing circuitry is configured to signal the cutter to move the blade across the cutter opening. A mount includes a base, a retainer with a channel sized to receive the cutter, and a mount opening that extends through the mount and across the channel. The cutter is configured to fit within the channel with the cutter opening aligned with the mount opening to form a through-opening such that the closing loop extends through the cutter and the mount.

There are provided a safety apparatus and an aerial vehicle including the safety apparatus, in which a lid and an opening end of a container are fixed before operation more firmly than a conventional art to be less susceptible to an external environment. A safety apparatus includes a piston member, a cylinder that accommodates the piston member and is provided with a bore through which the piston member protrudes to the outside during operation, a push-up member that is pushed up in one direction by the piston member, an ejected object 16 that is pushed up while being supported by the push-up member, a gas generator that moves the piston member in the cylinder, and a lid 21 including a projection 21a. The projection 21a includes a second through hole 21c, and an engagement mechanism is configured when a pin member 22 is inserted into the second through hole 21c and a first through hole 18a provided in a container 18 to engage an opening end of the container 18 and the projection 21a.

There are provided a safety apparatus and an aerial vehicle including the safety apparatus, in which a lid and an opening end of a container are fixed before operation more firmly than a conventional art to be less susceptible to an external environment. A safety apparatus includes a piston member, a cylinder that accommodates the piston member and is provided with a bore through which the piston member protrudes to the outside during operation, a push-up member that is pushed up in one direction by the piston member, an ejected object 16 that is pushed up while being supported by the push-up member, a gas generator that moves the piston member in the cylinder, and a lid 21 including a projection 21a. The projection 21a includes a second through hole 21c, and an engagement mechanism is configured when a pin member 22 is inserted into the second through hole 21c and a first through hole 18a provided in a container 18 to engage an opening end of the container 18 and the projection 21a.