Rapid-Connect Aircraft Propulsion Nacelles for VTOL Thrust Vectoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current aircraft designs face challenges in transitioning efficiently between vertical takeoff and landing (VTOL) and wing-borne lift configurations, particularly in terms of thrust vectoring and rapid in-situ assembly, which affects their versatility and operational efficiency.
Innovation Solution
The development of a propulsion assembly with a rapid connection interface, featuring a nacelle with a battery, speed controller, and an electric motor-driven rotor assembly, coupled with a gimbal for thrust vectoring, allowing for rapid structural and electrical connections to an airframe, enabling omnidirectional thrust vectoring and efficient transitions between VTOL and wing-borne lift orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional aircraft designs use fixed propulsion systems, then structural integrity is maintained, but assembly time and operational flexibility deteriorate
Solution Approach 1:
The propulsion assembly is divided into modular components (nacelle, electric motor, rotor assembly, battery, speed controller) that can be independently manufactured, tested, and rapidly replaced. The rapid connection interface itself is segmented into mechanical coupling elements and electrical connection elements, allowing for quick attachment and detachment without complex alignment procedures.
Solution Approach 2:
The propulsion assembly incorporates a gimbal mechanism that enables dynamic thrust vectoring, allowing the rotor assembly to tilt and redirect thrust in multiple directions. This dynamic capability is integrated into the modular design, so the same assembly that can be rapidly replaced also provides operational flexibility through active thrust control.
2Adaptability or versatility
If aircraft use fixed wing-borne lift configuration, then forward airspeed is improved, but versatility in VTOL operations deteriorates
Solution Approach 1:
The electric motor-driven rotor assembly with gimbal mounting is designed to perform multiple functions: it can operate in vertical orientation for VTOL operations, transition to horizontal orientation for forward flight with the fixed wings, and provide thrust vectoring for maneuvering. This universal propulsion design eliminates the need for separate vertical and horizontal flight systems.
Solution Approach 2:
The gimbal mechanism enables the propulsion assembly to dynamically change its orientation angle, transitioning between vertical and horizontal positions. This dynamic reconfiguration allows the same propulsion system to adapt to different flight modes (VTOL, hover, forward flight) without requiring multiple specialized propulsion systems.
3Loss of energy
If tiltrotor aircraft use fixed wing during VTOL, then forward thrust is improved, but downwash efficiency deteriorates
Solution Approach 1:
The propulsion system is segmented from the fixed wing structure through the gimbal interface, allowing the rotor assembly to be positioned independently below the wing. This segmentation enables the rotor to operate in a clean airflow environment without wing interference, improving downwash efficiency during vertical operations.
Solution Approach 2:
The gimbal mechanism adds a rotational degree of freedom in the vertical dimension, allowing the rotor plane to tilt between horizontal and vertical orientations. This dimensional change enables the propulsion system to optimize its performance for different flight phases by changing the rotor's spatial orientation relative to the wing.
4Productivity
If rapid connection interfaces are implemented, then assembly speed is improved, but connection reliability may deteriorate
Solution Approach 1:
The rapid connection interface merges mechanical coupling and electrical connection functions into a single integrated operation. When the propulsion assembly is attached to the airframe, both structural support and electrical power/control connections are established simultaneously through the combined interface design, ensuring reliability while maintaining speed.
Solution Approach 2:
The rapid connection interface incorporates pre-aligned connection elements and guide features that ensure proper positioning before final engagement. Electrical contacts are pre-positioned to engage automatically during the mechanical attachment process, eliminating the need for separate alignment steps and ensuring reliable connections.
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 solution enables aircraft to maintain hover stability and efficiently transition between flight attitudes, enhancing operational versatility and reducing assembly time, thereby improving mission flexibility and efficiency.
Implementation Method 1
an electric motor operable to rotate responsive to power from the battery
Implementation Method 2
a rotor assembly having a plurality of rotor blades that are rotatable with the output drive of the electric motor in a rotational plane to generate thrust
Implementation Method 3
The propulsion assembly includes a gimbal coupled to the nacelle and operable to redirect the thrust vector in a plurality of directions
Data Source
AI summary
A propulsion assembly for an aircraft includes a nacelle having a rapid connection interface, at least one battery disposed within the nacelle, a speed controller coupled to the battery and a propulsion system coupled to the speed controller and the battery. The propulsion system includes an electric motor having an output drive and a rotor assembly having a plurality of rotor blades that are rotatable with the output drive of the electric motor in a rotational plane to generate thrust. The electric motor is operable to rotate responsive to power from the battery at a speed responsive to the speed controller. The rapid connection interface of the nacelle is couplable to a rapid connection interface of an airframe nacelle station to provide structural and electrical connections therebetween that are operable for rapid in-situ assembly.