Defragmented Propeller-Motor Groups for Aircraft Thrust and Maneuverability
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Solution Overview
Problem
Existing small-sized aircraft for vertical take-off/landing and horizontal flight suffer from low controllability, maneuverability, safety, and speed due to large propeller-motor groups, high noise, and limited functionality, particularly in transporting non-passenger cargo.
Innovation Solution
The aircraft employs defragmented propeller-motor groups with small-sized independently operating electric motors and rotors, mounted on a common load-bearing frame and enclosed within protective screens, allowing for flexible geometric arrangements and easy maintenance, reducing weight and noise, and enhancing thrust and flight stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If large propeller-motor groups are used, then thrust is sufficient, but weight and size increase
Solution Approach 1:
The patent divides the single large propeller-motor group into multiple small-sized independently operating propeller-motor groups. Each small PMG generates thrust, and collectively they provide sufficient total thrust while reducing the weight and size characteristics of the aircraft compared to a single large PMG configuration.
2Force
If large propeller-motor groups are used, then thrust is sufficient, but aircraft size increases
Solution Approach 1:
The patent segments the large propeller-motor group into multiple small-sized independently operating propeller-motor groups distributed across the aircraft structure. This segmentation allows the aircraft to achieve sufficient thrust while maintaining compact size characteristics, as the small PMGs can be positioned at multiple locations rather than requiring a single large PMG installation space.
3Productivity
If open rotating blades are used, then thrust efficiency is high, but safety decreases due to collision risks
Solution Approach 1:
The patent divides the single large open rotor into multiple small-sized rotors within independently operating propeller-motor groups. These small rotors are positioned within protective enclosures formed by the aircraft frame structure, which shields them from ground collisions and obstacles while maintaining their rotational efficiency for thrust generation.
Solution Approach 2:
The patent implements protective enclosures formed by the aircraft frame structure that surround and shield the rotating propeller blades before any collision can occur. This beforehand protection prevents traumatic propeller-ground collisions and obstacles damage while allowing the propellers to maintain their thrust-generating function.
4Force
If large propeller-motor groups are used, then thrust is sufficient, but controllability and maneuverability decrease
Solution Approach 1:
The patent divides the single large propeller-motor group into multiple small-sized independently operating propeller-motor groups. Each small PMG can be independently controlled, allowing for precise manipulation of thrust distribution across different locations on the aircraft. This independent control capability significantly enhances the aircraft's controllability and maneuverability compared to a single large PMG configuration.
5Reliability
If propeller-motor groups are shielded, then safety increases, but noise increases due to lack of blade end shielding
Solution Approach 1:
The patent implements protective enclosures formed by the aircraft frame structure that surround each small propeller-motor group. These enclosures serve dual functions: they provide safety by preventing propeller-ground collisions and obstacle damage, and they reduce noise by shielding the rotating blades from generating excessive acoustic emissions, particularly at the blade ends.
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 improves flight handling, safety, and speed, increases maneuverability and responsiveness, and enables the transportation of various cargo, while reducing noise and weight, making the aircraft more compact and maintainable.
Implementation Method 1
small-sized independently operating electric motors of the main rotors... each small-sized main rotor in each small-sized independently operating PMG are connected to the small-sized independently operating electric motor
Implementation Method 2
engines with load-bearing propellers are installed... transformed into vertical take-off/landing and horizontal straight flight aircraft
Implementation Method 3
The technical results of the claimed group of inventions are: increasing the thrust and flight speed
Data Source
AI summary
Vertical take-off/landing and horizontal straight flight aircraft for transportation of passengers, cargo, and/or goods are described herein. The aircraft have increased thrust and flight speed; improved controllability and maneuverability of flight; increased safety of take-off, landing and touchdown of the aircraft; reduction in the weight and size characteristics of aircraft. An aircraft includes redistributed, assembled and interconnected small-sized independently operating electric motors of the main rotors obtained by defragmentation of the propeller-motor group (PMG), spaced from each other and forming a small-sized independently operating PMG located at certain distance from the longitudinal axis of the aircraft, and each small-sized main rotor in each small-sized independently operating PMG is connected to the small-sized independently operating electric motor. The small-sized independently operating PMGs are installed inside the screens, on the beams of the common frame and/or on tubes.