HAPS Gust Detection Feedback Control for Stable Relay Flight
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Solution Overview
Problem
High-altitude communication relay apparatuses in upper airspace are at risk of falling due to unstable flight attitudes caused by strong winds, such as gusts, which can disrupt the formation of three-dimensional mobile communication networks.
Innovation Solution
A communication relay apparatus equipped with flight control means that utilize Doppler radar to detect strong winds and determine flight control information to stabilize the aircraft's flight direction, velocity, altitude, and route, preventing the influence of gusts and ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flight control is performed without gust detection in upper airspace, then device complexity is reduced, but reliability deteriorates due to risk of falling from unstable attitude caused by strong winds
Solution Approach 1:
The Doppler radar detects strong winds and gusts in advance before they affect the aircraft attitude. By performing preliminary detection of hazardous weather conditions, the system can prepare compensatory control actions, thereby maintaining flight stability without requiring complex real-time response mechanisms.
Solution Approach 2:
The flight control means continuously receives feedback from the Doppler radar regarding wind conditions and adjusts flight control information accordingly. This closed-loop feedback mechanism enables the system to maintain reliable flight stability by dynamically responding to detected gusts and strong winds.
2Measurement precision
If Doppler radar is installed on the communication relay apparatus, then detection precision of strong wind is improved, but weight of moving object increases
Solution Approach 1:
Instead of installing the Doppler radar directly on the communication relay apparatus, the patent uses an external Doppler radar installed on the ground or on another platform as an intermediary. This external radar detects wind conditions and transmits the information to the aircraft, achieving precise wind measurement without adding weight to the moving object.
3Stability of the object's composition
If flight control information is adjusted frequently to counteract gusts, then stability is improved, but loss of time for control adjustments increases
Solution Approach 1:
By detecting wind conditions in advance using the Doppler radar, the system can predict upcoming gusts and prepare appropriate flight control adjustments. This preliminary detection allows the system to make smoother, more timely control adjustments without frantic last-minute corrections, thereby maintaining stability while minimizing time loss.
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 solution effectively prevents the communication relay apparatus from falling due to strong winds, maintaining the stability of the three-dimensional network formation and ensuring reliable communication services.
Implementation Method 1
the communication relay apparatus may comprise a Doppler radar for detecting a strong wind generated around the communication relay apparatus by observing a direction and velocity of a wind around the communication relay apparatus
Data Source
AI summary
It is prevented that a communication relay apparatus in an upper airspace, which is suitable for constructing a three-dimensional network, falls by a strong wind. A communication relay apparatus is provided with a relay communication station that performs a radio communication with a terminal apparatus, and is capable of flying in an upper airspace by an autonomous control or an external control. This communication relay apparatus includes a flight control section that controls a flight of the communication relay apparatus based on flight control information determined so as to reduce an influence of a strong wind generated around the communication relay apparatus. The flight control information may include information for controlling at least one of a flight direction, velocity, altitude, attitude, flight route and flight pattern of the communication relay apparatus.