A fastener for attaching a magazine to a breech plate, including a circular longitudinal body including at least one protrusion, an upper guide block having at least one slot adapted to cooperate with the protrusion, where the body is provided with a key grip at an upper end and a receiving opening at a lower end, where the fastener is provided with a release position in which the body is in a first rotational position, a set position in which the body is rotated by a first rotational degree from the release position, and a lock position in which the body is rotated by a second rotational degree from the release position. The advantage of the invention is that a magazine can be attached to and removed from an aircraft in a fast and easy way.

A fastener for attaching a magazine to a breech plate, including a circular longitudinal body including at least one protrusion, an upper guide block having at least one slot adapted to cooperate with the protrusion, where the body is provided with a key grip at an upper end and a receiving opening at a lower end, where the fastener is provided with a release position in which the body is in a first rotational position, a set position in which the body is rotated by a first rotational degree from the release position, and a lock position in which the body is rotated by a second rotational degree from the release position. The advantage of the invention is that a magazine can be attached to and removed from an aircraft in a fast and easy way.

A sequencer for use with a countermeasure defense system includes an input signal indicative of firing an expendable, a circuit card that receives the input signal indicative of firing the expendable and an output analog signal from the circuit card that fires the expendable. The parameters of the output analog signal correspond to parameters of a digital waveform.

A sequencer for use with a countermeasure defense system includes an input signal indicative of firing an expendable, a circuit card that receives the input signal indicative of firing the expendable and an output analog signal from the circuit card that fires the expendable. The parameters of the output analog signal correspond to parameters of a digital waveform.

A vehicle hatch system includes, a frame defining a perimeter of a hatch that is releasably attachable to a hatchway of a vehicle, at least one sub-frame attached to the frame configured to allow replaceable panels to be attached to the at least one sub-frame and the frame, at least one transparent non-armor panel is replaceably attachable to the at least one sub-frame and the frame, and at least one armor panel that is replaceably attachable to the at least one sub-frame and the frame.

A vehicle hatch system includes, a frame defining a perimeter of a hatch that is releasably attachable to a hatchway of a vehicle, at least one sub-frame attached to the frame configured to allow replaceable panels to be attached to the at least one sub-frame and the frame, at least one transparent non-armor panel is replaceably attachable to the at least one sub-frame and the frame, and at least one armor panel that is replaceably attachable to the at least one sub-frame and the frame.

A protection system for a classroom or other space to protect against a terrorist. The system includes a fixed control unit and a mobile control unit. The fixed control unit contains a hanger for drones to be launched against the terrorist. The fixed control unit also includes data storage units, a computer, a computer program and a memory, power storage units, a sighting laser for obtaining location information about the terrorist and an etching laser for marking the terrorist, an optics system for receiving visual information, and a telecommunication unit to send and receive information. The mobile control unit is worn by a protecting person in the space and includes some of the same components as the fixed control unit. It also has a local aiming system that includes for example a rifle type sight. The drone is a self-contained, self-propelled robotic flying vehicle that can be very small or even the size of a mouse. It has a mag-lev engine, electrical storage units and an aeronautically shaped body.

A protection system for a classroom or other space to protect against a terrorist. The system includes a fixed control unit and a mobile control unit. The fixed control unit contains a hanger for drones to be launched against the terrorist. The fixed control unit also includes data storage units, a computer, a computer program and a memory, power storage units, a sighting laser for obtaining location information about the terrorist and an etching laser for marking the terrorist, an optics system for receiving visual information, and a telecommunication unit to send and receive information. The mobile control unit is worn by a protecting person in the space and includes some of the same components as the fixed control unit. It also has a local aiming system that includes for example a rifle type sight. The drone is a self-contained, self-propelled robotic flying vehicle that can be very small or even the size of a mouse. It has a mag-lev engine, electrical storage units and an aeronautically shaped body.

A restrain and release mechanism for an externally airborne load, includes at least one stiff support for suspending the load and an elastically deformable adaptive member designed to maintain the load at pressure contact against the support. The adaptive member is a three-dimensional monolithic metallic body obtained using an additive manufacturing method and having a flexural orthotropic behaviour.

A restrain and release mechanism for an externally airborne load, includes at least one stiff support for suspending the load and an elastically deformable adaptive member designed to maintain the load at pressure contact against the support. The adaptive member is a three-dimensional monolithic metallic body obtained using an additive manufacturing method and having a flexural orthotropic behaviour.