Aircraft Fueling Control System Back Pressure Regulation
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Solution Overview
Problem
Existing fuel delivery systems for aircraft lack efficient control mechanisms to manage back pressure during refueling, potentially leading to excessive fuel pressure and inefficient fuel flow.
Innovation Solution
A fueling control system equipped with a pressure transducer and digital controller that senses back pressure and adjusts fuel flow and engine speed using PID loops to maintain optimal pressure and flow rates, preventing fuel pressure from exceeding 40 PSI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fuel flow is increased to improve refueling speed, then productivity increases, but back pressure in the fluid path increases causing unsafe pressure levels
Solution Approach 1:
The system employs a pressure transducer to continuously monitor back pressure in the fluid path and feeds this information back to a digital controller. The controller uses PID control algorithms to adjust the fuel delivery rate dynamically, reducing flow when pressure approaches unsafe levels and increasing flow when pressure is acceptable, thereby maintaining safety while maximizing refueling speed
Solution Approach 2:
The fuel delivery system transitions from a static, fixed-flow configuration to a dynamic system where the fuel flow rate continuously adapts based on real-time pressure conditions. The digital controller modifies pump speed or valve positioning dynamically throughout the refueling process to optimize the balance between productivity and pressure safety
2Reliability
If pressure control mechanisms are added to prevent excessive pressure, then safety improves, but device complexity increases
Solution Approach 1:
The system replaces traditional mechanical pressure relief valves and complex hydraulic control mechanisms with an electronically-based PID control system. The digital controller uses software-based PID algorithms to manage pressure, eliminating the need for multiple mechanical safety devices while achieving superior pressure regulation through continuous electronic sensing and actuation control
Solution Approach 2:
The pressure control system is designed to be self-regulating through PID control, where the system automatically adjusts fuel flow based on real-time pressure feedback without requiring external intervention. The controller continuously calculates the error between desired and actual pressure and autonomously modifies pump or valve operation to maintain safe pressure levels
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures safe and efficient fuel delivery by regulating back pressure, maintaining optimal fuel flow rates, and preventing excessive pressure, thereby enhancing the refueling process.
Implementation Method 1
a pressure transducer for sensing back pressure in a fluid path to a fuel tank of an aircraft
Data Source
AI summary
A fueling control system for providing fuel from a vehicle to an aircraft, and a method of providing fuel from a fuel vehicle to an aircraft are disclosed herein. The fueling control system includes a pressure transducer for sensing back pressure in a fluid path to a fuel tank of an aircraft, and a digital controller coupled to the pressure transducer for receiving the back pressure in the fluid path and controlling fuel flow in the fluid path to the aircraft. The method includes the steps of sensing back pressure in a fluid path from the aircraft; receiving the sensed back pressure by a digital controller; and controlling fuel flow to the aircraft in the fluid path based on the sensed back pressure.