A Prototype Test Stand for Testing Insolated Rotor Systems

Abstract

The article discusses assumptions for a prototype test stand designed for testing rotors in the conditions of work at their nominal speed, in particular gyrocopter and helicopter rotors. In the work presents an overview of similar solutions of test stand presented in the available literature and solutions proposed by companies, such as Swangate International or Luftfahrttechnik GmbH. Beyond these solutions the article also contains test stand used so far at the Institute of Aviation, these solutions were prepared for testing one type of rotor (for example: only for gyroplane rotors). The article provides the steps of designing a new test stand, which one of the basic assumptions is that it will be a universal test stand, giving the possibility to test different types of rotors. The article discusses two concepts of the stand with electric engine as a drive, gives the advantages and disadvantages of each concept, and indicates the selected solution. In addition to design and applied drive solution of the stand, the measuring part and data acquisition were also discussed. Moreover, the article focus on the advantages of rotor testing using the presented solution, as well as problems encountered during tests, in particular related to construction free vibrations and resonance. Vibration and resonance of the test stand are very important aspect of the entire design process, because it affects the quality and safety of the tests.

Thiết kế sơ bộ và tính toán mô phỏng khung thử nghiệm với lực đẩy tối đa 2000 N cho nghiên cứu thực nghiệm động cơ đẩy điện sử dụng ống hướng dòng

“…Tuy nhiên cũng đã có một vài nghiên cứu như: Ugur Kokal cùng các cộng sự [5] đã phát triển và kiểm tra khung thử nghiệm lực đẩy cho động cơ đẩy plasma công suất thấp hay thiết bị kiểm tra lực đẩy vi mô của hệ thống đẩy điện siêu âm của Weiguo He [6] và các cộng sự. Các nghiên cứu về khung (bệ) thử nghiệm chủ yếu tập trung cho các dạng động cơ có lực đẩy lớn như động cơ trực thăng, động cơ tên lửa,... [7][8][9][10][11]. Việc nghiên cứu cấu trúc khung thử nghiệm có thể giúp loại bỏ các chi tiết không cần thiết và đồng thời tăng giới hạn làm việc.…”

Test Stand for Propellers and Rotors in VTOL Drone Systems

“…the research that has hitherto been conducted into helicopter and gyroplane rotors at Whirl tower stands allows a lot of information to be obtained about the tested object and confirm the design assumptions. Additional information is available from the literature [11][12][13]. As indicated in the introduction to this study, the presented test stand is part of the Axial Flux Synchronous Motor Dynamometer, as well as the currently developed Hybrid (electric-combustion system) Dynamometer.…”

Ground Test Stands for Testing Rotors in Insulated Conditions

“…Recipients are oriented to new solutions, improvements that increase flight comfort, economy, distance and flight speed. In addition to the design of completely new rotorcraft solutions, great emphasis is placed on the development of new main rotors, with new airfoils and new technology of manufacturing using composite materials [5,6,7].…”