The bigger the fan and bypass ratio of a turbofan, the quieter and more efficient the engine. But these benefits diminish as increased nacelle weight and drag degrade the fuel-burn advantages of the larger bypass.
To help counter this conundrum, Rolls-Royce and Boeing teamed up under the second phase of the FAA’s Continuous Lower Energy, Emissions and Noise (CLEEN) environmental research program to flight-test a shorter and lighter inlet. The newly revealed results of the six-year program show the potential for significant benefits with fuel savings of about 0.5% and weight savings in excess of 350 lb. per shipset for a typical widebody application.
Using NVIDIA’s quantum computing platform, the companies have designed and simulated the world’s largest quantum computing circuit for computational fluid dynamics (CFD) — a circuit that measures 10 million layers deep with 39 qubits. By using GPUs, Rolls-Royce is preparing for a quantum future despite the limitations of today’s quantum computers, which only support circuits a few layers deep.
Rolls-Royce plans to use the new circuit on its journey to quantum advantage in CFD for modeling the performance of jet engine designs in simulations that use both classical and quantum computing methods