公开(公告)号：US10816026B2

公开(公告)日：2020-10-27

申请号：US15672651

申请日：2017-08-09

Applicant: Raytheon Company

Inventor： Christopher S. Nordahl ,  David G. Manzi ,  Linda A. Gee ,  Andrew B. Facciano

IPC: H01L41/09 ,  F16B31/00 ,  B64G1/64

Abstract: A coupler for separable physically coupling together a pair of objects includes two parts, on opposite sides of a boundary, that have different piezoelectric characteristics. When an electric field is applied to the coupler parts the piezoelectric forces induce a mechanical stress that separates the parts. The parts may be made of the same or a similar material, such as a suitable ceramic material, with the different piezoelectric characteristics produced by templating the parts with different domain orientations, from different seeds, for example using a three-dimensional manufacturing processes. The coupler may be used to allow shock-free (or reduced shock) separation of parts, such as separation of stages of vehicles such as flight vehicles.

公开(公告)号：US09972907B2

公开(公告)日：2018-05-15

申请号：US15068026

申请日：2016-03-11

Applicant: Raytheon Company

Inventor： Glafkos K. Stratis ,  Anton Vanderwyst ,  Wayne L. Sunne ,  David G. Derrick ,  James P. Edmiston ,  David G. Manzi ,  Howard C. Choe ,  Alphonso A. Samuel

IPC: H01Q3/34 ,  G01N9/24 ,  G01B7/06 ,  H01Q21/20 ,  H01Q1/42 ,  B64C30/00 ,  B64G1/66 ,  F42B15/12 ,  H01Q1/28 ,  H01Q21/28 ,  H05H1/00 ,  F42B15/10 ,  F42B15/34

CPC classification number: H01Q3/34 ,  B64C30/00 ,  B64G1/66 ,  F42B15/10 ,  F42B15/12 ,  F42B15/34 ,  G01B7/06 ,  G01N9/24 ,  H01Q1/281 ,  H01Q1/42 ,  H01Q21/20 ,  H01Q21/28 ,  H05H1/00 ,  H05H1/0062

Abstract: A sensor system and method of reducing plasma-induced communication inhibition for a main antenna includes using auxiliary antennas for detecting a density of plasma that affects operation of the main antenna, and re-orienting an electromagnetic field around the main antenna in response to the density detected to reduce effect of the plasma on the main antenna. The auxiliary antennas are also operable for data link communication and switchable such if the density of the plasma inhibits receipt or sending of signals by one of the auxiliary antennas, another one of the auxiliary antennas may be used for data link communication.