公开(公告)号：US20220205888A1

公开(公告)日：2022-06-30

申请号：US17135426

申请日：2020-12-28

Applicant: LOON LLC

Inventor： Venkata Akula ,  Kyle Brookes

IPC: G01N3/10 ,  G01B13/24

Abstract: Aspects of the technology relate to an apparatus and method for testing a material for use in a lighter-than-air craft deployable in the stratosphere. The apparatus and method may include and use a base plate and at least one ring component to attach to the base plate to secure a portion of the material. The at least one ring component has an elliptical shape including a minor radius having a first predetermined length and a major radius having a second predetermined length. The base plate receives a gas to inflate and pressurize the portion of the material. The first predetermined length and second predetermined length are selected to impart a stress ratio up to a predetermined maximum ratio onto the portion of the material through a predetermined temperature range when the portion of the material is inflated to a predetermined pressure.