摘要:
Embodiments of separating apparatuses are generally described herein. Other embodiments may be described and claimed. In one embodiment, a thermal sensor assembly includes a shape memory substrate anchored within an isolation housing and braced between first and second anchors. The shape memory substrate is configured to transition from the strained configuration to the fractured configuration at a specified temperature range, and the first substrate end fractures from the second substrate end at the specified temperature. In another embodiment, a fracture indicator is coupled with the shape memory substrate, and the fracture indicator is configured to indicate the fractured configuration corresponding to meeting or exceeding of the specified temperature. In one example, the specified temperature range includes a range of temperatures or a single temperature.
摘要:
A spring including a wire having an elasticity by which the wire is compressible by an external force to a first position at which first and second ends thereof of are separated by a first distance and when the force is removed or an electrical current applied, the wire is extensible in response to an internal spring force to a second position at which the wire is substantially straight. A spring assembly is disclosed including a plurality of inventive wires cross-coupled with a support structure consisting of a plurality of coaxial rings. In the assembly, the wires extend parallel to an axis through a center of the rings.
摘要:
A nose cone formed from a shape memory alloy (SMA) having a recoverable strain of at least 2% collapses about the dome for storage, deploys at launch to protect the sensor dome and reduce drag during atmospheric flight and is shed to allow sensing for terminal maneuvers. The SMA is shape-set at elevated temperatures in its Austenite phase with a memorized shape having a radius of curvature greater than that of the sensor dome to reduce aerodynamic drag. The temperature is reduced and the SMA collapsed to conform to the curvature of the sensor dome within the recoverable strain for storage. A first mechanism is configured to return the collapsed SMA to its memorized shape at launch or prior to going supersonic. In one embodiment, the SMA is stored below its Martensite finish temperature in a temperature-induced Martensite phase in which case the mechanism heats the SMA above the Austenite finish temperature to return the material to its memorized shape. In another embodiment, the SMA is stored above its Austenite finish temperature in which case collapsing the SMA places the material in a strain-induced Martensite phase. The mechanism holds the collapsed SMA in place and the releases the stored energy allowing the SMA to return to the memorized shape.
摘要:
A spring including a wire having an elasticity by which the wire is compressible by an external force to a first position at which first and second ends thereof of are separated by a first distance and when the force is removed or an electrical current applied, the wire is extensible in response to an internal spring force to a second position at which the wire is substantially straight. A spring assembly is disclosed including a plurality of inventive wires cross-coupled with a support structure consisting of a plurality of coaxial rings. In the assembly, the wires extend parallel to an axis through a center of the rings.
摘要:
Embodiments of separating apparatuses are generally described herein. Other embodiments may be described and claimed. In an embodiment, a separating apparatus is provided that comprises a pre-strained member formed from a shape memory alloy that is configured to separate upon application of heat.