ULM exams & tests vs ViscousJoukowski

The ULM exams & tests application helps you prepare for ultralight theoretical exams across all 9 disciplines: - Air Law - Aircraft General Knowledge - Communications - Flight Performance and Planning - Human Performance - Meteorology - Navigation - Operations - Principles of Flight The database contains over 500 questions and answers from both FAA and EASA program syllabi.  Master this database and you will have no trouble passing the licence exams in any country. Create your own tests and simulate exams. View your test history, questions, answers and progress report. Identify areas where you need more work and create targeted tests on your choice of chapters. Share your progress with your ground school instructor through our website. Your instructor can review your test history and track your progress. Flight schools can view student and instructor reports. Sign up through the app or our website www.donpilot.com and use your account anywhere, anytime, with a single subscription. Try our app for a day for $2, or subscribe for a month or more and get discounts! On a budget? Ask your instructor or ground school manager to credit your account - simply send them your e-mail address and the app name and you'll receive your credits ASAP. Pilots require radio operator's licences, you may also want to try our "Aviation radio operator tests" app! Website: https://www.donpilot.com Terms of service: https://www.donpilot.com/terms-and-conditions Privacy policy: https://www.donpilot.com/privacy-policy Application support: https://www.donpilot.com/support

Are you interested in fluid dynamics? Viscous Joukowski simulates the flow around a Joukowski airfoil by solving the two-dimensional incompressible Navier–Stokes equations directly on your device. For teachers, students, and curious aerodynamicists, it provides an interactive way to explore how viscosity changes lift, drag, pressure, boundary layers, separation, and wake formation. Watch vorticity, speed, pressure, and streamlines evolve around the airfoil. Change the angle of attack, thickness, and camber by dragging directly on the flow field, or use precision controls. Adjust the Reynolds number to explore steady flow, separated wakes, starting vortices, and vortex shedding. Surface-pressure curves and aerodynamic-force estimates update as the simulation develops. The app also includes the classical analytical Joukowski potential-flow solution. Overlay it on the computed viscous pressure distribution to see where the ideal textbook model agrees with—or departs from—the Navier–Stokes result. In the potential solution, circulation is selected using the Kutta condition; in the viscous simulation, circulation and the wake develop dynamically from the no-slip flow. All calculations run locally using Apple MLX and GPU-accelerated Fourier methods. No server, account, or cloud computation is required.