Aircraft Generator Positioning Between Inlet Duct and Fuselage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Embedded generators in flight vehicles face challenges such as limited space, high temperatures, oil presence, vibrations, and complex maintenance due to their location within the engine, leading to reduced durability and increased maintenance costs.
Innovation Solution
A generator unit is positioned in a generator-receiving space between the air inlet duct and the fuselage, coupled to the gas turbine engine via a generator shaft, allowing for independent rotation and providing electrical power while minimizing interference with airflow and accommodating larger power demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the generator is embedded within the gas turbine engine, then the space utilization is improved, but the generator size and power output are limited
Solution Approach 1:
The generator system is segmented into two separate components: the generator unit is positioned in the generator-receiving space between the air inlet duct and fuselage, while the gas turbine engine remains in the engine-receiving space. This segmentation allows the generator to be sized independently of engine constraints, enabling larger power output while still utilizing available space efficiently.
Solution Approach 2:
The generator is repositioned from a traditional embedded location within the engine to a new spatial dimension between the air inlet duct and fuselage. This dimensional change allows the generator to access additional space that was previously unavailable, enabling larger generator size and higher power output without interfering with engine operation.
2Adaptability or versatility
If the generator is embedded within the gas turbine engine, then the integration is improved, but the maintenance accessibility and complexity are worsened
Solution Approach 1:
The generator system is divided into separable components with the generator unit positioned independently from the engine. This segmentation maintains functional integration while enabling independent access to the generator for maintenance without requiring engine disassembly or removal from the fuselage.
Solution Approach 2:
The air inlet duct serves as an intermediary structure that provides access pathways to the generator unit. Maintenance personnel can access the generator through the air inlet duct opening without needing to remove the engine from the fuselage, simplifying maintenance procedures while maintaining system integration.
3Ease of operation
If the generator is positioned between the air inlet duct and fuselage, then the generator accessibility is improved, but the space availability is reduced
Solution Approach 1:
The generator is positioned in a previously underutilized space between the air inlet duct and fuselage, effectively using a different spatial dimension for generator placement. This location provides good accessibility for maintenance while utilizing space that does not interfere with engine operation or primary aerodynamic pathways.
Solution Approach 2:
The generator-receiving space serves multiple functions: it houses the generator unit, provides maintenance accessibility through the air inlet duct opening, and does not interfere with engine operation or aerodynamic flow. This multi-functional use of space maximizes the utility of the available volume.
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
This configuration enhances the durability and accessibility of the generator, reduces maintenance complexity, and allows for efficient power generation without compromising the aerodynamic flowpath, thereby improving the overall reliability and cost-effectiveness of the flight vehicle's electrical power system.
Implementation Method 1
A generator unit (16) positioned in a generator-receiving space between an air inlet duct (331) and a fuselage (312) of the flight vehicle. The generator unit (16) coupled to the gas turbine engine (314) to rotate therewith and provide electrical power to the flight vehicle while in flight.
Data Source
AI summary
A flight vehicle includes a fuselage and a gas turbine engine. The gas turbine engine is coupled to the fuselage to provide thrust when air surrounding the flight vehicle is admitted to the gas turbine engine and combusted with fuel. The flight vehicle further includes a generator coupled to the gas turbine engine to provide power to equipment included in the vehicle.