Abstract: A boom deployment mechanism is disclosed. The boom deployment mechanism may include a boom, a root plug, and a locking mechanism. In some embodiments, the boom may have a proximal end and a distal end. The boom may have a deployed configuration where the boom has a tubular shape with a slit that extends along the longitudinal length of the boom from the proximal end of the boom to the distal end of the boom. The boom may have a stowed configuration where the boom is flattened and rolled. In some embodiments, the locking mechanism may be configured to secure the proximal end of the boom to the root plug when the boom is in a deployed configuration.

Abstract: Various shape memory polymer (SMP) devices are disclosed. Many of these SMP devices can be used as attachment and/or release mechanisms for any number of different applications. These SMP devices can use various characteristics of the SMP material to allow for various shape changes. These shape changes, in some embodiments, can be used to provide for release and/or attachment devices, for example, SMP bolts, SMP screws, SMP collars, SMP pillars, SMP panels, and/or SMP rivets, to name a few. An SMP device can include a first geometric state and a second geometric shape. The first geometric shape can restrict motion of two distinct objects relative to one another and the second geometrical shape can allow motion of two distinct objects relative to one another.

Abstract: Some embodiments of the invention include a boom deployment system. The boom deployment system, for example, may include a housing, a spool, a first boom, and a second boom. The spool may be disposed within the housing and configured to rotate around an axis that is fixed relative to the housing. The first boom and/or the second boom may have a cylindrical shape in a deployed configuration, a flattened shape in a stowed configuration, and a slit that extends along the longitudinal length of the boom in the deployed configuration. The first boom and/or the second boom may be stowed in the stowed configuration flattened and wrapped around the spool. The first boom and/or the second boom may transition from the stowed configuration to the deployed configuration as the spool rotates around the axis.

Abstract: A system comprising a boom having a first end, a longitudinal length, and a slit that extends along the longitudinal length of the boom; a drum having an elliptic cross section and a longitudinal length; an attachment mechanism coupled with the first end of the boom and the drum such that the boom and the drum are substantially perpendicular relative to one another; an inner shaft having a longitudinal length, the inner shaft disposed within the drum, the longitudinal length of the inner shaft is aligned substantially parallel with the longitudinal length of the drum, the inner shaft at least partially rotatable relative to the drum, and the inner shaft is at least partially rotatable with the drum; and at least two cords coupled with the inner shaft and portions of the boom near the first end of the boom.

Abstract: A reflector is provided according to various embodiments. The reflector may include a backing structure having various configurations. The backing structure, for example, can comprise a plurality of trusses, flexible couplings, stiffeners, and crossbeams in any number of arrangements.

Abstract: An assembly that includes a wedge and mandrel that share an axis of rotation and can be rotated independently or simultaneously to stow or deploy slit-tube longerons. A wedge is crescent shaped, with a height that increases along an outer perimeter as the arc of the crescent is traversed from a first end to a second end. The changing height of the wedge allows a slit-tube longeron to be flattened for stowage or can be disengaged to allow the tube to curl up for deployment.

Abstract: A system comprising a boom having a first end, a longitudinal length, and a slit that extends along the longitudinal length of the boom; a drum having an elliptic cross section and a longitudinal length; an attachment mechanism coupled with the first end of the boom and the drum such that the boom and the drum are substantially perpendicular relative to one another; an inner shaft having a longitudinal length, the inner shaft disposed within the drum, the longitudinal length of the inner shaft is aligned substantially parallel with the longitudinal length of the drum, the inner shaft at least partially rotatable relative to the drum, and the inner shaft is at least partially rotatable with the drum; and at least two cords coupled with the inner shaft and portions of the boom near the first end of the boom.

Abstract: An asymmetric mast is disclosed that can be used for solar arrays. The asymmetric mast can have an asymmetry out of the plane of the solar blanket. The mast may include two or more booms that comprise slit tube longerons. In some embodiments, a single mast can be used with one or two solar blankets.

Abstract: A unitary reflector system and methods for forming that include a reflector and support structure. These two structures can form a single unitary structure. Such a reflector system can be constructed from composite laminate materials that are laid up or formed in during a single manufacturing process. The composite support structure can be formed on the back of the reflector using standard laminate techniques. An extractable tool, can include a rigid core, one or more foam blocks, which may be shape a memory polymer foam, an elastic membrane, and a nozzle. The foam blocks can be shaped to provide a mold of the composite structure being manufactured. This mold may require the extractable tool to be trapped by the composite structure after manufacture. Use of the foams can allow the extractable tool to shrink in at least one dimension in order to extract the tool from the trapped configuration.

Abstract: According to the invention, an extendable member is disclosed. The extendable member may include a structure having a first state and a second state. The structure may be deformable between the first state and the second state. In the first state the structure may include a compact form. In the second state the structure may include a hollow longeron having a slit along the entire length of the hollow longeron. One or both longitudinal edges along the slit of the hollow longeron may have lateral protrusions. The lateral protrusions of a longitudinal edge may act in such a way with the other edge, and possibly its protrusions, to at least partially inhibit relative motion of the edges.

Abstract: According to the invention, an extendable member is disclosed. The extendable member may include a structure having a first state and a second state. The structure may be deformable between the first state and the second state. In the first state the structure may include a compact form. In the second state the structure may include a hollow longeron having a slit along the entire length of the hollow longeron. One or both longitudinal edges along the slit of the hollow longeron may have lateral protrusions. The lateral protrusions of a longitudinal edge may act in such a way with the other edge, and possibly its protrusions, to at least partially inhibit relative motion of the edges.

Abstract: Various shape memory polymer (SMP) devices are disclosed. Many of these SMP devices can be used as attachment and/or release mechanisms for any number of different applications. These SMP devices can use various characteristics of the SMP material to allow for various shape changes. These shape changes, in some embodiments, can be used to provide for release and/or attachment devices, for example, SMP bolts, SMP screws, SMP collars, SMP pillars, SMP panels, and/or SMP rivets, to name a few. An SMP device can include a first geometric state and a second geometric shape. The first geometric shape can restrict motion of two distinct objects relative to one another and the second geometrical shape can allow motion of two distinct objects relative to one another.

Abstract: A reflector is provided according to various embodiments. The reflector may include a backing structure having various configurations. The backing structure, for example, can comprise a plurality of trusses, flexible couplings, stiffeners, and crossbeams in any number of arrangements.

Abstract: Embodiments of the invention are directed toward extractable tooling devices for composite structure manufacturing. An extractable tool, according to some embodiments of the invention, can include a rigid core, one or more foam blocks, an elastic membrane, and a nozzle. The foam blocks can be shaped to provide a mold of the composite structure being manufactured. This mold may require the extractable tool to be trapped by the composite structure after manufacture. Use of the foams can allow the extractable tool to shrink in at least one dimension in order to extract the tool from the trapped configuration.

Abstract: According to the invention, an extendable member is disclosed. The extendable member may include a structure having a first state and a second state. The structure may be deformable between the first state and the second state. In the first state the structure may include a compact form. In the second state the structure may include a hollow longeron having a slit along the entire length of the hollow longeron. One or both longitudinal edges along the slit of the hollow longeron may have lateral protrusions. The lateral protrusions of a longitudinal edge may act in such a way with the other edge, and possibly its protrusions, to at least partially inhibit relative motion of the edges.

Abstract: A deployable structure that may include a slit-tube longeron and a flat panel coupled with the slit-tube longeron. The slit-tube longeron may include a tubular member having a slit that runs along the longitudinal length of the slit-tube longeron. The deployable structure may be configured to couple with a satellite. And the deployable structure may be configured to transform between a stowed state and a deployed state where the tubular member is substantially straight when the deployable structure is in the deployed state, and the tubular member is wrapped around the satellite when the deployable structure is in the stowed state.

Abstract: Various shape memory polymer (SMP) devices are disclosed. Many of these SMP devices can be used as attachment and/or release mechanisms for any number of different applications. These SMP devices can use various characteristics of the SMP material to allow for various shape changes. These shape changes, in some embodiments, can be used to provide for release and/or attachment devices, for example, SMP bolts, SMP screws, SMP collars, SMP pillars, SMP panels, and/or SMP rivets, to name a few. An SMP device can include a first geometric state and a second geometric shape. The first geometric shape can restrict motion of two distinct objects relative to one another and the second geometrical shape can allow motion of two distinct objects relative to one another.

Abstract: Embodiments of the invention are directed toward benzoxazine composite structures and the application thereof. In some embodiments, a radome can be constructed from a benzoxazine composite structure. A benzoxazine structure can include a low density core with one or two benzoxazine composite face skins. The benzoxazine face skins can include reinforcement materials to provide structural strength. Such radomes and/or benzoxazine structures can be used in various maritime, aircraft, rocket, missile, and/or automobile applications. In particular, radomes can be used to house communication equipment such as antennas and the like.