Abstract: An aerial vehicle safety apparatus includes a piston member, a cylinder that accommodates the piston member and is provided with a hole through which the piston member protrudes outward at time of operation, a push-up member that is pushed up in one direction by the piston member, an expandable object that is pushed up while being supported by the push-up member, a gas generator as a power source that moves the piston member in the cylinder, and a first member and a second member that serve as a cylindrical container that accommodates the piston member, the cylinder, the push-up member, the expandable object, and the gas generator. The expandable object is stored in the container so as to form a plurality of layers in a radial direction.

Abstract: Provided are an ejection device with reduced weight without reducing an ejection speed of an ejected object and a flying object including the ejection device. An ejection device 100 includes a piston member 10, a cylinder 14 which accommodates the piston member 10 and is provided with a hole portion 13 for allowing the piston member 10 to project outward during operation, a push-up member 15 pushed up in one direction by the piston member 10, an ejected object 16 pushed up while being supported by the push-up member 15, and a gas generator 17 which moves the piston member 10 in the cylinder 14, and in the ejection device 100, the push-up member 15 has a support portion 20 disposed on a distal end side of the piston member 10 with a tip of the piston member 10 in a moving direction of the piston member 10 set as a reference.

Abstract: Provided are an aerial vehicle safety apparatus capable of smoothly and quickly expanding an expandable object such as a parachute at time of expansion with a simple configuration, and a method of accommodating the expandable object in the aerial vehicle safety apparatus. An aerial vehicle safety apparatus 100 includes a piston member 10, a cylinder 14 that accommodates the piston member 10 and is provided with a hole 13 through which the piston member 10 protrudes outward at time of operation, a push-up member 15 that is pushed up in one direction by the piston member 10, an expandable object 16 that is pushed up while being supported by the push-up member 15, a gas generator 17 as a power source that moves the piston member 10 in the cylinder 14, and a first member 18 and a second member 21 that serve as a cylindrical container that accommodates the piston member 10, the cylinder 14, the push-up member 15, the expandable object 16, and the gas generator 17.

Abstract: Provided are an ejection device with reduced weight without reducing an ejection speed of an ejected object and a flying object including the ejection device. An ejection device 100 includes a piston member 10, a cylinder 14 which accommodates the piston member 10 and is provided with a hole portion 13 for allowing the piston member 10 to project outward during operation, a push-up member 15 pushed up in one direction by the piston member 10, an ejected object 16 pushed up while being supported by the push-up member 15, and a gas generator 17 which moves the piston member 10 in the cylinder 14, and in the ejection device 100, the push-up member 15 has a support portion 20 disposed on a distal end side of the piston member 10 with a tip of the piston member 10 in a moving direction of the piston member 10 set as a reference.

Abstract: An ignition powder composition for igniter of which friction sensitivity can be lowered with the required firing current sensitivity being achieved is provided as ignition powder for an igniter that is activated by an electrical signal. The ignition powder composition for igniter contains metal hydride (A); metal powder (B) that is one or more selected from the group consisting of tungsten powder, molybdenum powder, aluminum powder, titanium powder, and magnesium powder; and perchlorate (C).