Rolls-Royce has completed a decade-long investment of about $1 billion in its manufacturing, assembly, and testing operations in Indiana. The company describes it as the largest investment it has made in the United States.
The program modernized advanced manufacturing capability at the Indianapolis campus and expanded engine testing capacity. That work included new ground-test facilities and an altitude test facility in West Lafayette. Altitude testing allows engineers to reproduce the pressure and temperature conditions an engine meets at cruise, which supports validation of new designs and verification of engines coming out of overhaul.
The Indiana operations build and test engines for a range of defense and commercial platforms. Current programs supported at the site include the V-22 Osprey, the US Navy MQ-25A Stingray, and the C-130J. The campus is also tied to future engines for the US Air Force B-52 strategic bomber and the US Army MV-75 Cheyenne.
Rolls-Royce employs around 3,500 people in Indianapolis, including members of the United Auto Workers, and the company says its Indiana supply chain supports thousands of additional jobs.
Engine test capacity influences how quickly engines move through development work and depot maintenance. Ground-test and altitude-test cells are limited assets across the US engine sector, so added capability at a single campus affects throughput for the military and commercial programs handled there.
Source: AviTrader Aviation News - https://avitrader.com/2026/08/28/rolls-royce-completes-us1bn-indiana-manufacturing-investment/