Combined Power System Air Intake Design
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Solution Overview
Problem
Existing combined power systems, which integrate a rotary electric machine and a gas turbine engine, are too large and inefficient in air intake, limiting their use in small spaces such as those found in flying objects like multicopters.
Innovation Solution
A combined power system design where the rotary electric machine housing includes leg members with a rectifying member that directs atmospheric air into a shroud case, eliminating the need for an intake duct and housing, allowing for efficient air intake and reduced system size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intake duct and intake housing are provided on the rotary electric machine housing, then atmospheric air can be drawn into the engine housing, but the overall size and scale of the combined power system becomes considerably greater
Solution Approach 1:
The patent merges the intake duct and intake housing functions into the leg members that connect the rotary electric machine housing to the engine housing. The air intake space is formed between these leg members, eliminating the need for separate intake components while maintaining air intake functionality.
Solution Approach 2:
The leg members serve multiple functions: they provide structural connection between the rotary electric machine housing and engine housing, and simultaneously create the air intake space. This multi-functionality reduces the overall number of components and system size.
2Volume of moving object
If the air intake port is provided between the wall end surface and shroud case, then the intake duct and housing can be eliminated, but atmospheric air in the vicinity of the shroud case cannot be drawn in efficiently
Solution Approach 1:
The patent positions the air intake space in a different spatial dimension - between the leg members that extend axially from the rotary electric machine housing. This allows air to be drawn from the vicinity of the shroud case efficiently without requiring a traditional intake port configuration.
Solution Approach 2:
The air intake space formed between the leg members acts as an intermediary channel that efficiently directs atmospheric air from the vicinity of the shroud case into the engine housing, solving the air intake efficiency problem without additional components.
3Reliability
If the combined power system is made large to accommodate intake components, then air intake can be ensured, but the freedom in arrangement layout of equipment is lowered
Solution Approach 1:
By merging the air intake functionality into the existing leg member structure, the patent eliminates the need for additional space-consuming intake components, thereby maintaining arrangement layout freedom in compact applications.
Solution Approach 2:
The patent changes the spatial parameters of the air intake system by forming the intake space between the leg members rather than using traditional external intake housings, allowing for more flexible arrangement layouts in compact applications.
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 enables efficient air intake and reduces the overall size and scale of the combined power system, making it suitable for smaller applications like flying objects without the need for additional intake components.
Implementation Method 1
a rectifying member provided on the one end of the rotary electric machine housing in the axial direction, and disposed in the air intake space, the rectifying member being gradually reduced in diameter from the rotary electric machine toward the gas turbine engine
Data Source
AI summary
An engine housing of a gas turbine engine includes a plurality of leg members. An air intake space is formed between the plurality of leg members. A shroud case supported by the engine housing is disposed in the air intake space. A rotary electric machine housing of a rotary electric machine system includes a rectifying member. The rectifying member includes a distal end facing toward the shroud case, and the distal end is inserted inside the shroud case.