Because many of aerodynamic principles are based on Reynolds

Because many of aerodynamic principles are based on Reynolds number, matching the Reynolds number can matter more than matching scale or velocity for many effects. We use this principle with a water tunnel where the increased density allows models to be tested at lower while still matching real-world results. A. smaller, velocities B. larger, velocities C. larger, angles-of-attack D. smaller, angles-of-attack

Solution

Option A

Because of this principle we can use smaller models at lower velocities to match the real world situations