An energy absorbing strut having, a first end coupled with an inner cylinder, and a second end connected with a hollow rod extending within the inner cylinder. A piston is carried by the rod having an outer surface sealing against an inside diameter of the inner cylinder and forming a compression chamber and a rebound chamber bounded by the piston, the rod having an internal passageway communicating between the compression chamber and the rebound chamber. An inertial mass carried by the rod movable axially on the rod between a closed position against and annular rod passageway and an open position opening the rod passageway and allowing the flow of a hydraulic fluid between the compression chamber and the rebound chamber. A spring acts on the inertial mass biasing the inertial mass toward the closed position. The energy absorbing strut may be used in a blast mitigation system for a military vehicle or other applications for providing shock isolation between two structures.

An energy absorbing strut having, a first end coupled with an inner cylinder, and a second end connected with a hollow rod extending within the inner cylinder. A piston is carried by the rod having an outer surface sealing against an inside diameter of the inner cylinder and forming a compression chamber and a rebound chamber bounded by the piston, the rod having an internal passageway communicating between the compression chamber and the rebound chamber. An inertial mass carried by the rod movable axially on the rod between a closed position against and annular rod passageway and an open position opening the rod passageway and allowing the flow of a hydraulic fluid between the compression chamber and the rebound chamber. A spring acts on the inertial mass biasing the inertial mass toward the closed position. The energy absorbing strut may be used in a blast mitigation system for a military vehicle or other applications for providing shock isolation between two structures.

A vehicle surface 30, preferably wherein the vehicle is an aircraft, is described. The vehicle surface 30 comprises thereon and/or therein a set of retroreflectors 300, including a first retroreflector 300A, configured to reflect, at least in part, incident hostile light towards a source thereof.

A vehicle surface 30, preferably wherein the vehicle is an aircraft, is described. The vehicle surface 30 comprises thereon and/or therein a set of retroreflectors 300, including a first retroreflector 300A, configured to reflect, at least in part, incident hostile light towards a source thereof.

A plug for insertion into a blast-tube exit cavity of a gun-blast diffuser comprises a plug front surface, a plug rear surface, a plug side surface that extends between the plug front surface and the plug rear surface, a body, comprising a polyurethane foam, and a substrate, coupled to the body and comprising a conductive nonwoven fabric, impregnated with a polyurethane matrix. The plug front surface of the plug is formed by the substrate. The plug rear surface of the plug is formed by the body. The plug side surface of the plug is formed by the substrate and the body.

Blockchain technology is used to generate and maintain Non Fungible Tokens (NFTs) for use in combat planning and execution.

Blockchain technology is used to generate and maintain Non Fungible Tokens (NFTs) for use in combat planning and execution.

The present specification relates generally to unmanned aerial vehicles, and specifically to a vertical take-off and lift unmanned aerial vehicle configured for high speed, long-distance flight, and vertical take-off and lift, while carrying a significant payload. The aerial vehicle includes a first propeller and a second propeller, each comprising at least two blades and each disposed on opposite lateral edges of the aerial vehicle; a tail segment forming a trailing edge of the aerial vehicle, wherein the tail segment comprises: an elevator; and a first wing and a second wing, each comprising an aileron. The aerial vehicle further includes four fins, wherein the four fins are affixed to lateral edges behind the first propeller or the second propeller and configured as endplates; a motor; and a power supply.

Techniques and systems are provided for the deployment of small Unmanned Aircraft Systems (sUAS) and Loitering Munitions (LM) from an airborne Small Tactical Unmanned Aircraft System (STUAS).

Techniques and systems are provided for the deployment of small Unmanned Aircraft Systems (sUAS) and Loitering Munitions (LM) from an airborne Small Tactical Unmanned Aircraft System (STUAS).