Quick-Change Accessory Mounting for Rotary Wing Aircraft
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Solution Overview
Problem
Existing accessory mounting systems for rotary wing aircraft do not allow for quick and efficient change of accessory loads, fail to accommodate varying weights, and are not cost-effective or simple to use, lacking mechanical strength with minimal weight addition.
Innovation Solution
A frame with a quick change mounting system that includes a transceiver for electronic flight control, a battery for power, and a connector to adjust the center of mass in alignment with the center of effort, using resilient couplers for vibration isolation and common tools for assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional accessory mounting systems are used, then structural strength is maintained, but accessory load change is time-consuming and inefficient
Solution Approach 1:
The mounting system is divided into separate modular components: a permanent base mounting structure attached to the aircraft, and removable accessory loads with complementary mounting features. This segmentation allows the accessory loads to be quickly detached and replaced without affecting the base structure, dramatically reducing replacement time while maintaining structural integrity.
Solution Approach 2:
The mounting system transitions from a static, permanent attachment to a dynamic, quickly reversible connection. The base mounting provides stable permanent attachment points, while the accessory loads incorporate quick-release mechanisms that enable rapid dynamic reconfiguration of the accessory configuration without compromising structural strength.
2Adaptability or versatility
If accessory loads are changed frequently, then adaptability is improved, but mounting system complexity increases
Solution Approach 1:
The base mounting system is designed as a universal platform with standardized attachment points that can accommodate multiple different accessory load types. Each accessory load incorporates complementary universal mounting features, allowing frequent interchangeability without requiring complex specialized mounting mechanisms for each accessory type.
Solution Approach 2:
The accessory loads are designed with self-contained mounting features that automatically interface with the base mounting system. The quick-change mechanism allows operators to easily attach and detach accessories without requiring complex tools or procedures, reducing operational complexity while enabling frequent changes.
3Reliability
If vibration isolation is added, then accessory stability is improved, but device weight increases
Solution Approach 1:
Resilient couplers are introduced as intermediary elements between the base mounting system and the accessory loads. These couplers provide vibration isolation and shock absorption, improving accessory stability and reliability. The couplers are designed to be lightweight, minimizing the weight penalty while maximizing the vibration isolation benefit.
Data Source
AI summary
An improved accessory mounting is disclosed for a rotary wing aircraft comprising a frame supporting a plurality of driven propellers. A transceiver is connected to a electronic flight control for directing the flight of the rotary wing aircraft. An accessory frame receives an accessory load to be carried by the rotary wing aircraft. A battery is disposed on the frame for powering the transceiver. A quick change mounting removably mounts the accessory frame to the frame. Preferably, the battery is movable relative to the frame for compensating for different weights of the accessory load secured to the accessory frame to adjust the center of mass for proper flight of the rotary wing aircraft. An integral balance included for adjusting the center of mass assisting of the rotary wing aircraft.