Double-Layer Flow Guiding Assembly for Propulsion
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Solution Overview
Problem
Light-weight flight vehicles equipped with turbo propulsion devices face high energy consumption due to the large mass and complex mechanical structures required for rotating the devices, leading to increased energy loss during directional changes.
Innovation Solution
A propulsion device with a double-layer flow guiding assembly, comprising a first-layer and second-layer flow guiding assembly that swing relative to each other along non-parallel axes, optimizing jet airflow efficiency and reducing energy loss by allowing independent adjustment of airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire turbo propulsion device is rotated to change the direction of jet airflow, then the flight vehicle can perform turning, climbing or descending actions, but a large amount of force is required due to the large mass of the propulsion device
Solution Approach 1:
The flow guiding function is segmented into two independent layers: a first-layer flow guiding assembly and a second-layer flow guiding assembly. Each layer can be rotated independently around its own rotation axis, allowing the system to achieve complex airflow direction changes without rotating the entire heavy propulsion device. This segmentation reduces the moment of inertia and the force required for rotation while maintaining full directional control capability.
Solution Approach 2:
The first-layer flow guiding assembly is nested within or around the second-layer flow guiding assembly, with both assemblies concentrically arranged around the airflow discharge port. This nested configuration allows compact arrangement of multiple rotation mechanisms while enabling independent rotation of each layer, thus achieving versatile airflow control without requiring the entire propulsion device to rotate.
2Adaptability or versatility
If the entire turbo propulsion device is rotated to change flight direction, then the flight vehicle can change direction, but the mechanical structure that rotates the entire turbo propulsion device is quite complicated
Solution Approach 1:
The flow guidance system is divided into two independent modular assemblies, each with its own rotation mechanism. The first-layer flow guiding assembly rotates around a first rotation axis, while the second-layer flow guiding assembly rotates around a second rotation axis. This modular segmentation simplifies the mechanical structure compared to rotating the entire propulsion device, as each layer can be controlled independently with simpler, lighter rotation mechanisms.
Solution Approach 2:
Both the first-layer and second-layer flow guiding assemblies are designed to be rotatable around their respective rotation axes, providing dynamic and flexible airflow direction control. This dynamic configuration allows the system to adapt to various flight maneuvers by independently adjusting each layer's orientation, reducing the need for complex mechanical linkages that would be required to rotate the entire rigid propulsion device.
3Adaptability or versatility
If the entire turbo propulsion device is rotated to change the direction of jet airflow, then the flight vehicle can change flight direction, but the energy consumption of the flight vehicle is increased
Solution Approach 1:
By segmenting the flow guidance into two independent layers that can rotate separately, the system reduces the mass that needs to be accelerated during rotation. Only the lightweight flow guiding assemblies need to be rotated, not the entire heavy propulsion device, significantly reducing the energy consumption required for directional changes while maintaining full maneuverability.
Solution Approach 2:
The rotatable design of both flow guiding assemblies enables dynamic airflow direction control with minimal energy input. The first-layer assembly can be rotated to achieve primary direction changes, while the second-layer assembly provides fine-tuning and additional directional control, allowing the system to achieve complex maneuvers through coordinated rotation of lightweight components rather than rotating the entire propulsion device.
Data Source
AI summary
A propulsion device with double-layer flow guiding assembly and a flight vehicle using the same are provided. The propulsion device includes a propulsion body, a first-layer flow guiding assembly and a second-layer flow guiding assembly. The propulsion body includes a housing, an airflow suction port and an airflow discharge port. The first-layer flow guiding assembly includes a front flow guiding ring and at least one first-layer flow guiding plate. The front flow guiding ring is disposed outside the airflow discharge port and has a first axis. The front flow guiding ring swings relative to the airflow discharge port along a first rotation axis. The first rotation axis intersects the first axis. The first-layer flow guiding plate is fixed in the front flow guiding ring and extends along the first rotation axis. The second-layer flow guiding assembly has a structure similar to the first-layer flow guiding assembly.