Current US hypersonic weapons projects. (General)

About five-ten years ago wasn't Rolls-Royce working on a turbojet for a high supersonic/low hypersonic missile which I think was designated the YJ-102 (I don't know if I'm remembering correctly)?

Yes, for RATTLRS. It apparently had about the best thrust to weight ratio ever achieved and was similar in concept to the SR-71 J58. Program ended with successful test flights; unclear if anything was ever developed from the technology.
 
Details on the Indiana Factory:

A San Diego-based military contractor plans to spend $50 million to construct a 68,000-square-foot facility at Crane to test and improve hypersonic weapons.

The contractor, Kratos Defense & Security Solutions, announced the plans Tuesday at Westgate@Crane Technology Park in Odon, Indiana, about 35 miles southwest of Bloomington.

Company executives said they expect to hire more than 100 people, from machinists to engineers, who will earn an average of $80,000 a year.

Kratos Senior Vice President Michael Johns said the company is working on partnerships with academic institutions and already has signed research agreements with Notre Dame, Purdue and IU.

 

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