What is the fuel delivery method to the engine in the Schweizer 300c?

The Schweizer 300C utilizes an engine-driven fuel pump in combination with an electric boost pump to ensure a reliable fuel delivery system. This method is critical for helicopter operations because it provides consistent fuel flow to the engine under various flight conditions.

The engine-driven pump primarily maintains the necessary fuel pressure for normal operation, while the electric boost pump serves as an auxiliary to facilitate fuel delivery during engine start-up or in situations where fuel pressure might drop below optimal levels. This dual-pump system enhances safety by allowing the helicopter to maintain engine function even if one fuel delivery method experiences a malfunction.

Utilizing an engine-driven pump combined with an electric boost pump is a common design choice in various helicopter models because it strikes a balance between efficiency, reliability, and safety. This makes it more advantageous than other delivery methods such as gravity-fed systems, which can be affected by aircraft orientation and may not provide adequate fuel flow during maneuvers, or manual fuel pumps, which require pilot operation and could result in inconsistent fuel delivery.