How is the nose gear door designed to open?

The nose gear door of the Dassault Falcon 7X is designed to open mechanically by rollers. This mechanism allows for a reliable and straightforward operation as the rollers facilitate the smooth movement of the door during the opening and closing process. The mechanical system is often less complex than hydraulic or electrical systems, making it less prone to failure due to fewer components and less maintenance required over time.

Hydraulic actuators are typically used in systems requiring significant force or those that handle larger doors or components. However, in this case, the nose gear door operates on a simpler mechanical principle, which aligns with the overall design philosophy of reliability and ease of maintenance in the Falcon 7X aircraft.

Automatic opening by sensors and electrical motors would typically imply a more complex system that adds additional layers of integration and potential points of failure. While these methods can provide benefits in certain applications, the mechanical roller system used for the nose gear door strikes a balance between functionality and reliability specific to its design requirements.