Abstract:
A modular self-contained gate for selectively blocking an entryway comprising an ISO standard shipping container modified such that an existing closed end wall of the shipping container comprises an elongate slot-like opening arranged vertically and adjacent an edge of the closed end wall, a substantially flat and rectangular gate comprising a long edge having a length substantially the same as a length of the shipping container and a height less than a height of the opening, the gate aligned with and linearly displaceable through the opening between a first position wherein the gate is stored inside the shipping container and the entryway is open and a second position wherein the gate is extended outside of the shipping container and passage via the entryway is barred, and a support mechanism inside the shipping container suspending the gate such that the gate remains suspended above the ground.
Abstract:
A ROTARY WING, VERTICAL LIFT AIRCRAFT INCLUDES A CENTRAL FUSELAGE AND A ROTOR CONSISTING OF AN INNER ANNULAR HUB ROTATABLY SUPPORTED ON AN ENCIRCLING THE FUSELAGE, RADIALLY EXTENDING ROTOR BLADES, AND AN OUTER SUPPORTING RING. THE ROTOR IS ADAPTED TO BE DRIVEN BY A TURBINE DEVICE ASSOCIATED WITH THE ROTOR OUTER RING AND AN OUTER TRACK NONROTATABLY ATTACHED TO THE FUSELAGE. EACH ROTOR BLADE IS ATTACHED TO A SUPPORT MEMBER IN THE HUB STRUCTURE, AND THE SUPPORT MEMBERS ARE INTERCONNECTED BY TENSION MEMBERS DESIGNED TO SEPARATE FROM THE SUPPORT MEMBERS UNDER PREDETERMINED LOAD WHEREBY THE ROTOR STRUCTURE WILL SEPARATE FOM THE BODY IN THE EVENT THAT ONE ROTOR BLADE IS LOST CREATING AN UNBALANCE IN THE ROTOR.
Abstract:
A rotary wing aircraft includes a central fuselage and a rotor consisting of an inner annular hub rotatably supported on and encircling the fuselage, radially extending radial blades and an outer supporting ring. The rotor is adapted to be driven by a turbine device associated with the rotor outer ring and an outer track nonrotatably attached to the fuselage. Each rotor blade is attached to a radially disposed, rotatable spindle in the hub structure; and pitch control arms are fixed to these spindles for controlling the rotation of the spindles and, therefore, the pitch of the attached rotor blades. An annular, pneumatically controlled bellows system, mounted on the fuselage concentric with the hub selectively controls the oscillation of the pitch control arms and thereby provides collective and cyclic pitch control for the rotor blades. In a rotary wing aircraft, such as a helicopter, it is conventional to provide means for changing the pitch of the rotor blades for control of the aircraft. The changing of the pitch of each of the rotor blades simultaneously and uniformly is referred to as ''''collective pitch control,'''' this control being used to increase or decrease the lift of the rotor. The variable changing of the pitch of a rotor blade in relation to its angular position relative to the aircraft fuselage is referred to as cyclic pitch control. This control is used, during forward motion of the aircraft, to compensate for the fact that the rotor blades moving in the direction of flight should have a different pitch than the retreating blades. This cyclic pitch control may also be used for directional control of the aircraft and for trimming of the aircraft. The use of a cyclic pitch control of a directional control is particularly important in aircraft which does not have any tail structure for directional and attitude control, as do conventional helicopters.
Abstract:
A modular self-contained gate for selectively blocking an entryway comprising an ISO standard shipping container modified such that an existing closed end wall of the shipping container comprises an elongate slot-like opening arranged vertically and adjacent an edge of the closed end wall, a substantially flat and rectangular gate comprising a long edge having a length substantially the same as a length of the shipping container and a height less than a height of the opening, the gate aligned with and linearly displaceable through the opening between a first position wherein the gate is stored inside the shipping container and the entryway is open and a second position wherein the gate is extended outside of the shipping container and passage via the entryway is barred, and a support mechanism inside the shipping container suspending the gate such that the gate remains suspended above the ground.
Abstract:
Devices for bending materials generally include a mold and a holder for supporting the mold. The mold generally includes two halves, each of which extend in a longitudinal direction, and which together enclose a mold cavity. The mold has first and second mold outer walls. The mold halves include parallel elements that are arranged alternatingly in the longitudinal direction. Adjusting slats movably positioned on the holder are configured to form a stop for the first or second mold outer wall.
Abstract:
Disclosed ia an anti-torque and yaw control system for rotary wing aircraft employing tip driven rotor blades. The rotor blades are driven by a turbine drive ring powered by high velocity fluid. The drive ring is enclosed in a shroud and fluid passing through the turbine ring is collected in a ducted fan axially alligned tangentially with the dirve ring. The ducted fan is also tip driven by fluid from the main drive fluid supply. Alternative arrangements for varying the thrust of the ducted fan are shown. A jet thruster cooperating with the drive system is used for yaw control.
Abstract:
This application discloses an improved rotary wing aircraft capable of vertical lift. The aircraft employs airfoils or rotor blades which rotate in tracks surrounding the fuselage with the airfoils being driven by low-pressure air directed through nozzles onto turbine blades in the outer track. Directional control is provided by tilting the plane of rotation of the rotor blades or by cyclic pitch control of the rotors.
Abstract:
A ROTARY WING, VERTICAL LIFT AIRCRAFT INCLUDES A CENTRAL FUSELAGE AND A ROTOR CONSISTING OF AN INNER ANNULAR HUB ROTATABLY SUPPORTED ON AND ENCIRCLING THE FUSELAGE, RADIALLY EXTENDING ROTOR BLADES AND AN OUTER RING CONNECTING THE OUTER ENDS OF THE BLADES. THE ROTOR RING IS GUIDED IN AN ANNULAR GUIDE TRACK SUPPORTED ON THE BODY BY MEANS OF
RADIAL STRUTS. THE ROTOR RING DEFINES A REACTION TURBINE SUPPLIED WITH PRESSURIZED AIR FROM AIR SUPPLY STATIONS LOCATED IN THE GUIDE TRACK AND SUPPLIED FROM A COMPRESSOR WITHIN THE FUSELAGE THROUGH THE SUPPORTING STRUTS.