Dual-Engine VTOL Fuel Venting for Orientation Changes
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Solution Overview
Problem
Traditional fuel systems for fixed-wing aircraft struggle to meet the demands of vertical take-off and landing (VTOL) aircraft, requiring a wider range of fuel supply and pressure regulation across varying orientations.
Innovation Solution
The aircraft is equipped with a fuel system comprising nacelle and fuselage fuel tanks, valves, and venting mechanisms that redistribute fuel and regulate pressure based on orientation, using sensors and processors to manage fuel levels and center of gravity for balanced operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fuel systems designed for fixed-wing aircraft are used, then the system structure is simple, but the fuel supply cannot meet the demands of VTOL aircraft across varying orientations
Solution Approach 1:
The fuel system is divided into multiple fuel tanks (first fuel tank, second fuel tank, third fuel tank) positioned at different locations in the aircraft. Each tank can be independently controlled to supply fuel to engines, allowing the system to adapt to different orientations by selecting which tanks are active and how they are positioned relative to the engines.
Solution Approach 2:
The fuel system incorporates dynamic control through valves and pumps that can redirect fuel flow between tanks and to different engines based on the aircraft's current orientation. The system actively adjusts fuel distribution during transitions between vertical and horizontal flight modes to maintain proper fuel supply and aircraft balance.
2Stability of the object's composition
If fuel is redistributed to maintain balance during orientation changes, then aircraft stability is improved, but the control system complexity increases
Solution Approach 1:
The system uses sensors to detect the aircraft's orientation and fuel levels in different tanks, then feeds this information back to the control system. Based on this feedback, the control system automatically adjusts valve positions and pump operations to redistribute fuel and maintain proper aircraft balance during orientation transitions.
Solution Approach 2:
The fuel system is designed to automatically self-regulate fuel distribution based on orientation sensors and level indicators. The system can autonomously determine when fuel needs to be redistributed and execute the redistribution without requiring constant manual intervention, reducing the operational complexity while maintaining stability.
3Reliability
If venting mechanisms are added to regulate pressure in fuel tanks, then pressure control is improved, but the device complexity increases
Solution Approach 1:
Different fuel tanks are equipped with venting mechanisms positioned at appropriate locations based on their specific functions and orientations. Each tank has venting capability tailored to its location and role in the fuel system, allowing pressure regulation where needed without adding venting complexity to the entire system uniformly.
Data Source
AI summary
The present application discloses an aircraft configured for vertical take-off and landing and horizontal flight. The aircraft includes a valve configured to control the permitting or restricting of a release of gas from different regions of a fuel tank when the aircraft is in a vertical take-off and landing orientation and when the aircraft is in a horizontal flight orientation.