Which fluidics principle allows gas to exit two output ports with unequal flow depending on which control is activated?

• A. Wall Attachment
• B. Beam Deflection
• C. Dual Port Flow
• D. Tuning Split

Answer: (B)

Beam deflection is the idea behind how a single gas jet can be steered to exit one of two outlets, with the majority of flow going to the chosen port based on which control is activated. In this setup a small movable beam sits near the jet and is actuated to tilt toward one side or the other. When the beam deflects toward a particular output, the high-velocity gas stream is directed into that channel, producing a larger flow there and a smaller flow to the opposite port. Activating the other control tilts the beam the opposite way, flipping which port gets the larger share. This direct, controllable steering of the jet is why beam deflection best fits the scenario of unequal flow depending on which control is used. The other ideas describe different ways jets can interact with surfaces or rely on fixed split ratios, but they don’t capture the explicit, controllable deflection of a gas beam between two outputs.