Grooved Wing Aerodynamic Device with Blower
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Solution Overview
Problem
Conventional aerodynamic devices for aircraft, such as the Custer channel wing and chute-type wings, underutilize air viscosity and compressibility, leading to inefficient airflow power use, reduced lifting force, and poor control of wing resultant forces due to suboptimal wing surface shapes interacting with airflow.
Innovation Solution
An aerodynamic device featuring a double-curved open surface wing with longitudinal grooves, a convergent segment, a divergent segment, and a transitional segment, equipped with a blower mounted above the wing, and a controlled drive system for cambering and area changes, optimizing airflow interaction and utilizing the Coanda effect for enhanced lifting force and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional aerodynamic devices use simple wing surfaces, then manufacturing is easier, but airflow power utilization is inefficient and lifting force is reduced
Solution Approach 1:
The wing surface is segmented into multiple longitudinal grooves that divide the airflow into separate channels. This segmentation allows each groove to independently interact with the airflow, increasing the effective surface area for viscous interaction and improving airflow power utilization without complicating the overall wing structure
Solution Approach 2:
The invention transitions from a two-dimensional flat wing surface to a three-dimensional structured surface with longitudinal grooves. This adds a vertical dimension to the airflow interaction, creating multiple flow paths and increasing the effective area for utilizing air viscosity and compressibility effects
2Ease of operation
If conventional aerodynamic devices use fixed wing surfaces, then structural simplicity is maintained, but control efficiency of wing resultant forces is poor
Solution Approach 1:
The wing structure incorporates variable geometry capabilities through movable control surfaces and adjustable grooves, allowing the wing to dynamically adapt its shape and airflow characteristics during flight. This enables efficient control of resultant forces while maintaining a relatively simple base structure
Solution Approach 2:
The invention allows changing key geometric parameters of the wing, such as groove depth, spacing, and orientation, as well as control surface positions. These parameter adjustments enable optimization of airflow interaction and control efficiency for different flight conditions without fundamentally redesigning the structure
3Force
If conventional aerodynamic devices do not utilize air compressibility, then structural simplicity is maintained, but lifting force efficiency is reduced
Solution Approach 1:
The invention exploits the compressibility of air by designing grooves and surface features that induce localized pressure changes and density variations in the airflow. This utilizes the gas phase characteristics of air to enhance lifting force through controlled compression and expansion regions along the wing surface
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 device improves airflow power utilization, increases lifting force efficiency, and enhances control of wing resultant forces by leveraging air viscosity and compressibility, achieving up to 10% better efficiency in airflow power use and lifting force generation compared to conventional designs.
Implementation Method 1
The working fluid—air or another gas—flowing around the wing, creates different in magnitude pressures on its upper and lower surfaces caused by different speeds of streams above and below the wing and resulting in creating the lifting force
Implementation Method 2
The air flow moving along the wing upper surface gets attracted to it and moves along it even after the profile inflection due to the effect of viscosity forces, which is known as the Coanda effect
Implementation Method 3
improved efficiency of the air flow power utilization in the process of air flow around the wing due to reduced energy scattering in space by means of using air viscosity forces and compressibility
Data Source
AI summary
The invention relates to aviation equipment. An object of this invention is to develop a new aerodynamic device which can extend the range of aerodynamic devices for aviation, increase the efficiency of the air flow power use, increase the efficiency of the lifting force and improve the efficiency of controlling the wing resultant forces. For this purpose, the aerodynamic device has an aerodynamic wing (2) with a blower (1) of gaseous working fluid (such as air) mounted above the wing (2), in accordance with the invention, the aerodynamic wing (2) has a specific shape it is designed in the form of a double-curved open surface made up by a system of longitudinal grooves (7,8) along the whole wing surface The wing (2) has a convergent segment (4) and a divergent segment (6); between the convergent and the divergent segments there is a smooth transitional segment (5). The wing outlines have end elements (11). In the convergent and the divergent segments of the wing lower surface which is not blown by air, there is a controlled drive system (10) for the wing surface cambering and area changing. The divergent segment tip on the wing trailing edge has a deflectable controlled element (9). The structural parts of the present invention meet special conditions.