A new era in flight is emerging that requires a more effective simulation strategy [5]. Many modes of transportation are being developed industrially, including air-taxi drones and ground- effect transport. Similarly, new modes of energy generation, such as blade-less wind farms have been proposed. All of these require a new level of reliability for simulations to be useful in engineering design. We will describe some computations we are doing and the flaws in standard algorithms that have been uncovered in the process. We will also describe some open problems [1] related to these and some prizes being offered for their solution. Our work involves the collaboration of Rebecca Durst (Argonne National Laboratory), Ingeborg Gjerde (Norwegian Geotechnical Institute), Johan Jansson (KTH Royal Institute of Technology), Claes Johnson (KTH Royal Institute of Technology), Leo Rebholz (Clemson University), Tabea Tscherpel (Technical University Darmstadt), and Henry von Wahl (Friedrich Schiller University Jena). A key aspect of the research involved evaluating Reynolds–Orr instability of flow around a cylinder in [2], in both two and three dimensions, computed using new algorithms in [3] and involving significant adjustments at the curved boundary [4]. Chaotic, two-dimensional flow around a cylinder has been extensively studied in [6, 8]. Extensions to three dimensions are being informed by [7].