A cargo transporting system for a tailsitter aircraft includes a cargo receptacle rotatably coupled to an underside of a wing and a cargo assembly selectively coupled to the cargo receptacle. By rotating the cargo receptacle, the cargo transporting system can transition between a deployed position and a retracted position. In the deployed position, the cargo receptacle is substantially perpendicular to the wing, and accommodates ground personnel charged with connecting or removing the cargo assembly from the cargo transporting system. In the retracted position, the cargo receptacle is substantially parallel to the wing, and positioned for flight operations.

A cargo transporting system for a tailsitter aircraft includes a cargo receptacle rotatably coupled to an underside of a wing and a cargo assembly selectively coupled to the cargo receptacle. By rotating the cargo receptacle, the cargo transporting system can transition between a deployed position and a retracted position. In the deployed position, the cargo receptacle is substantially perpendicular to the wing, and accommodates ground personnel charged with connecting or removing the cargo assembly from the cargo transporting system. In the retracted position, the cargo receptacle is substantially parallel to the wing, and positioned for flight operations.

A convertiplane is described that comprises: a fuselage, having a first longitudinal axis and, in turn, comprising a nose and a tail portion; a pair of wings arranged on respective opposite sides of the fuselage, carrying respective rotors and generating a lift value; and a pair of engines operatively connected to respective rotors; each rotor comprising a mast rotatable about a second axis between a helicopter configuration and an aeroplane configuration; each rotor is interposed between the fuselage and the relative rotor along the direction of extension of the relative wing.

A recoilless firearm apparatus for firing at least one bullet of a respective standard cartridge, including a front barrel, a disposable firing activator and a rear discharge opening formed behind the front barrel and aligned with the longitudinal axis of the front barrel. The standard cartridge further includes a casing having an external diameter that is smaller than the rear cartridge-chamber diameter, wherein the casing encloses a sealed inner-casing space that contains gunpowder, and wherein the casing includes a primer. Upon activating the primer, the primer explodes to thereby detonate the gunpowder, forming propellant gasses inside the cartridge that are directed both forward and backward as follows: a) forward: firing of the bullet via the front barrel; and b) backward: pushing, by a recoil force F.sub.p, the casing, being a counterweight to the bullet, to thereby eject the casing from the firearm apparatus via the rear discharge opening.

A recoilless firearm apparatus for firing at least one bullet of a respective standard cartridge, including a front barrel, a disposable firing activator and a rear discharge opening formed behind the front barrel and aligned with the longitudinal axis of the front barrel. The standard cartridge further includes a casing having an external diameter that is smaller than the rear cartridge-chamber diameter, wherein the casing encloses a sealed inner-casing space that contains gunpowder, and wherein the casing includes a primer. Upon activating the primer, the primer explodes to thereby detonate the gunpowder, forming propellant gasses inside the cartridge that are directed both forward and backward as follows: a) forward: firing of the bullet via the front barrel; and b) backward: pushing, by a recoil force F.sub.p, the casing, being a counterweight to the bullet, to thereby eject the casing from the firearm apparatus via the rear discharge opening.

A projectile cartridge that can be removably attached to a flying vehicle is disclosed. A system can include a first flying vehicle, a projectile attachment mechanism configured with the first flying vehicle, a projectile cartridge that contains a projectile, the projectile cartridge being removably attachable to the projectile attachment mechanism, a weight attached to the projectile, the weight being configured in a releasable configuration in the projectile cartridge and a drawstring configured with the projectile. After firing the projectile, when tension is applied to the drawstring as the projectile approaches or envelops a second flying vehicle, the tension can cause the drawstring to close the projectile down to secure the second flying vehicle.

A projectile cartridge that can be removably attached to a flying vehicle is disclosed. A system can include a first flying vehicle, a projectile attachment mechanism configured with the first flying vehicle, a projectile cartridge that contains a projectile, the projectile cartridge being removably attachable to the projectile attachment mechanism, a weight attached to the projectile, the weight being configured in a releasable configuration in the projectile cartridge and a drawstring configured with the projectile. After firing the projectile, when tension is applied to the drawstring as the projectile approaches or envelops a second flying vehicle, the tension can cause the drawstring to close the projectile down to secure the second flying vehicle.

A projectile component that can be removably attached to a flying vehicle is disclosed. The projectile component includes a net configured in the projectile component, a receiving cavity configured in the projectile component, and a weight attached to the net via a string. The weight can be configured in the receiving cavity in preparation for firing the net from the projectile component. In order to entangle a target flying vehicle in the net, a cocklebur associated with the weight is included. Upon firing the net from the projectile component, and upon the net engaging with a target device, the cocklebur becomes entangled with the net to secure the target flying vehicle. A drawstring structure associated with the net can also be used to ensure that the net envelops and captures the target flying vehicle.

A projectile component that can be removably attached to a flying vehicle is disclosed. The projectile component includes a net configured in the projectile component, a receiving cavity configured in the projectile component, and a weight attached to the net via a string. The weight can be configured in the receiving cavity in preparation for firing the net from the projectile component. In order to entangle a target flying vehicle in the net, a cocklebur associated with the weight is included. Upon firing the net from the projectile component, and upon the net engaging with a target device, the cocklebur becomes entangled with the net to secure the target flying vehicle. A drawstring structure associated with the net can also be used to ensure that the net envelops and captures the target flying vehicle.

An assembly having an aircraft door and auxiliary equipment. The aircraft door and the auxiliary equipment are connected by a flexible deformable bellows having creases. The door comprises a passing through hole and a support joinable to the first end of the bellows. The auxiliary equipment comprises a support joinable to the second end of the bellows and a projecting part. The projecting part is configured to have elevation movement and/or azimuth movement, and the projecting part crosses the interior of the bellows and the hole of the door and protrudes out of the door. At both ends of the bellows a clamp joins and tightens each end of the bellows with the corresponding support. There is a fixed joint between the first end of the bellows and the door and a movable joint between the second end of the bellows and the auxiliary equipment.