Abstract: An elastomeric compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The elastomeric compression spring comprises a tube elongated along a central axis of the tube. The central axis of the tube is perpendicular to the direction. The tube is configured to compress in the direction. The tube comprises an outer surface comprising an initial contact line configured to initially receive contact from the first part. The tube further comprises at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced apart from the initial contact line. The at least one load tuning feature creates a localized change in a thickness of the tube and a stiffness of the elastomeric compression spring at the at least one load tuning feature.

Abstract: An elastomeric compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The elastomeric compression spring comprises a tube elongated along a central axis of the tube. The central axis of the tube is perpendicular to the direction. The tube is configured to compress in the direction. The tube comprises an outer surface comprising an initial contact line configured to initially receive contact from the first part. The tube further comprises at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced apart from the initial contact line. The at least one load tuning feature creates a localized change in a thickness of the tube and a stiffness of the elastomeric compression spring at the at least one load tuning feature.

Abstract: An elastomeric compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The elastomeric compression spring comprises a tube elongated along a central axis of the tube. The central axis of the tube is perpendicular to the direction. The tube is configured to compress in the direction. The tube comprises an outer surface comprising an initial contact line configured to initially receive contact from the first part. The tube further comprises at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced apart from the initial contact line. The at least one load tuning feature creates a localized change in a thickness of the tube and a stiffness of the elastomeric compression spring at the at least one load tuning feature.

Abstract: An elastomeric compression spring for isolating vibrations between a first part and a second part. The first part is movable in a direction relative to the second part. The elastomeric compression spring comprises a tube elongated along a central axis of the tube. The central axis of the tube is perpendicular to the direction. The tube is configured to compress in the direction. The tube comprises an outer surface comprising an initial contact line configured to initially receive contact from the first part. The tube further comprises at least one load tuning feature in the outer surface, parallel to the central axis, and circumferentially spaced apart from the initial contact line. The at least one load tuning feature creates a localized change in a thickness of the tube and a stiffness of the elastomeric compression spring at the at least one load tuning feature.

Abstract: A storage container, which may be a fuel bladder, includes a container wall configured to retain a fluid within the container and an opening through the container wall. The container includes a rim of the container wall surrounding the opening and a non-planar flex region of the container wall adjacent to the rim. The flex region includes at least one resilient crease in the container wall and the rim is between the flex region and the opening. A portion of the container wall surrounds the flex region. The flex region exhibits the property of allowing movement of the rim with respect to the portion of the container wall.

Abstract: A tank system may include a tank having a tank volume and mounted in a vehicle having a system CG and a system CG offset limit. The tank system may further include at least one outer baffle having an outer baffle port and dividing the tank volume into an inner compartment and at least one outer compartment. The outer baffle may be positioned such that when the outer baffle port is open and the combined volume of liquid in the inner and outer compartment is less than a total inner compartment volume, the system CG may exceed the system CG offset limit during a shift of a liquid CG, and when the outer baffle port is closed and the outer compartment is substantially empty of liquid, the system CG remains within the system CG offset limit during a shift of the liquid CG for at least one fill level of the inner compartment.

Abstract: Apparatus and methods described herein provide for a structural armor configured to provide load-bearing capabilities to a structure, as well as to provide protection from hypervelocity impacts. According to one aspect of the disclosure provided herein, the structural armor may include two armor facesheets, with an angular member core disposed between. The angular member core may include a number of nodes abutting the armor facesheets, with angular members intersecting at the nodes at acute node angles from the armor facesheets and extending between the armor facesheets. The acute node angles correspond with estimated spread angles of a debris field resulting from an impact of an object with an armor facesheet while moving at hypervelocity speed.

Abstract: A tank system may include a tank having a tank volume and mounted in a vehicle having a system CG and a system CG offset limit. The tank system may further include at least one outer baffle having an outer baffle port and dividing the tank volume into an inner compartment and at least one outer compartment. The outer baffle may be positioned such that when the outer baffle port is open and the combined volume of liquid in the inner and outer compartment is less than a total inner compartment volume, the system CG may exceed the system CG offset limit during a shift of a liquid CG, and when the outer baffle port is closed and the outer compartment is substantially empty of liquid, the system CG remains within the system CG offset limit during a shift of the liquid CG for at least one fill level of the inner compartment.