Flying Device Radiator Placement for Downward-Airflow Cooling
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Solution Overview
Problem
The radiator (cooling unit) in existing flying apparatuses is inefficiently cooled due to its mounting on the engine-support portion of the airframe.
Innovation Solution
The cooler is positioned below the rotor blade, with a baffle guiding downward airflow to enhance cooling efficiency, and the radiator is designed to overlap with the rotor's rotation path in a planar view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the radiator is mounted on the engine-support portion of the airframe, then the engine can be supported and cooled, but the cooling efficiency is insufficient
Solution Approach 1:
The radiator is repositioned from the traditional engine-support portion to a location below the rotor blade, utilizing the vertical space and airflow path beneath the rotating blade. This dimensional relocation allows the radiator to access high-velocity downward airflow generated by the rotor, dramatically improving cooling efficiency without adding complex mounting structures
Solution Approach 2:
The rotating rotor blade itself serves as the cooling mechanism for the radiator. The blade's rotation naturally generates downward airflow that directly passes over the radiator, eliminating the need for separate cooling fans or complex forced-air systems. The rotor's own operational motion provides the cooling service
2Temperature
If the cooler is positioned below the rotor blade, then cooling efficiency is enhanced, but the risk of blade interference with the cooler increases
Solution Approach 1:
The radiator is designed with specific geometric characteristics including an elongated shape positioned at an angle to the rotor rotation axis, with its long axis extending partially into the rotor's rotational plane. This localized geometric configuration allows the radiator to intercept maximum airflow while maintaining sufficient clearance from the blade path, optimizing cooling exposure without excessive interference risk
Solution Approach 2:
The radiator's position and orientation are predetermined during design to optimize the balance between cooling efficiency and blade clearance. The angular positioning and dimensional proportions are pre-calculated to ensure the radiator receives adequate airflow during normal operation while maintaining safe distances from the blade's rotational envelope
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 exposes the cooler to downward airflow generated by the rotor, effectively enhancing the cooling efficiency of the radiator.
Implementation Method 1
a cooler to water-cool the driver
Implementation Method 2
The radiator may include a radiating surface
Implementation Method 3
expose the cooler to downward flow of air generated by driving of the rotor
Implementation Method 4
downward flow of air generated by rotation of the blade
Data Source
Figure 1
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Figure 3
AI summary
Provided is a flying apparatus in which a cooler for water-cooling a driver such as an engine can be effectively cooled. . A flying apparatus (1) includes an airframe (2), a rotor (3A) attached to the airframe, a driver (4) to drive the rotor, and a cooler (40) to water-cool the driver. The cooler is provided below a blade (3d) of the rotor.