Welcome to Anhui Province Small and Medium Aviation Power Test Base

——Haery Testing Center

The fact that piston aero-engine aircraft dominates the general aviation field is not only reflected in the number of existing general aviation aircraft, but also can be proven from annual flight time and annual sales. Aero engines are different from automotive engines.Aero engines require a relatively power-to-weight ratio, which should generally be greater than(0.13～0.2)Kg/hp，Every operation of the aircraft engineIt takes 1000 to 2000 hours to undergo an overhaul, so the frequency of replacement of old and old aircraft engines is increasing year by year.. Currently there isThere are 360,000 general aviation aircraft, nearly 80% of which are piston-engine aircraft, so there is huge room for market demand.

picture1：active dutyregisterNumber of general aviation aircraftcontrast

picture2：Piston engine aircraft customer area(percentage)

According to market demand and industry development, Anhui Haery Company was established in September 2015The product has been subjected to demand analysis, product definition, machine development, test verification, and process development, throughThe path of CAE-design-test, the test center follows the V-shaped development process, and the test verification is established using a four-level process (key component level, subsystem, whole machine level, and paddle powertrain level) system. After the introduction of the European standard, combined with independent development, national military standard, and three-pole verification (tolerance, working conditions, environment) requirements, it finally forms a set of test specifications with complete performance and trustworthiness.

picture3：VCharacterDevelopment process

Haery Testing Center Equipment:

The test center is based on building a domestic advanced test base covering aero engine development, with a planned design18 test rooms.

picture4: HaeryTest Center Operation Hall

The test center meets the testing and development capabilities of 3kW~330kW piston internal combustion engines, and can have the ability to verify engine thermodynamic development, combustion analysis, electronic control calibration, conventional performance tests (external characteristics/universal characteristics/friction work, etc. tests), mechanical development tests (cooling system/lubricating system/quick system/timing system/attachment wheels/temperature field, etc. tests) until reliability tests (full-speed full load/alternating load/hot and cold shock/overspeed/resonance, etc. tests). The test center has 8 complete machine performance development and trustworthy benches, including 5 AVL power dynamometer bench systems and 3 domestic power dynamometer bench systems, with power coverage range of 3Kw to 330Kw.Torque coverage35Nm～1400Nm, speed coverage range 2500r/min～12000r/min. Each complete machine test room mainly includes a power dynamometer, HVAC, air intake air conditioner, fuel consumption meter and quick loading trolley, etc., which are used to control the engine to simulate, measure and collect engine performance data for different working conditions, and undertake engine performance development, trustworthiness and other tests.

picture5：Test center routineBench frame（AVL）

In addition to the performance test bench of the whole machine, the test center also has three comprehensive vibration test benches, fuel system test benches, gas distribution mechanism test benches, inclined test benches, two pump test benches and other related system-level and component-level test benches. Among them, the inclined test benches, gas distribution mechanism durability and performance test benches, fuel system test benches, etc. are all independently developed by the test center, which effectively improves the equipment self-made capability of the test center and completes the test development node in advance.

The three comprehensive vibration test benches can be used for component-level and system-level verification benches. They are test equipment that integrates the three environmental stresses of temperature, humidity and vibration. They mainly assess the reliability and durability of engine components or systems in temperature, humidity and vibration environments. They can simulate the failure of engine components in extreme temperature, humidity and vibration environments, expose product defects as soon as possible, thereby shortening the R&D cycle and guiding the design and development of new products. The temperature range of the three integrated environmental boxes can be reached-70℃～+150℃, the humidity range reaches 10%R.H.～98%R.H. The vibration frequency range of the vibration table can reach 2Hz～2500Hz, the vibration displacement is more than 51mm, and the vibration acceleration is more than 980m/s², sufficient to simulate the three comprehensive test environment in which the engine is located in actual operation.

picture6 Three comprehensive vibration test bench

The fuel system test bench mainly simulates the engine's relatively pressurized fuel injection system and is used for the engine control and management systemECU and fuel injector development verification can also be used for the reliability, durability test of fuel injectors, consistency inspection of fuel injectors, and adaptability development of different oil products. The fuel systems used in Haery engine products (including fuel injectors, ECUs, pressure-reducing oil pumps, etc.) are all independently designed and developed by Haery.

The durability test bench of the gas distribution mechanism is mainly composed of a variable frequency motor, a lubrication control system, a data acquisition and analysis system, which is used to simulate the reliability and durability test of the engine gas distribution mechanism under certain rotation speed and lubrication conditions; the performance test bench of the gas distribution mechanism is frequency conversion motor, a lubrication control system, a faster laser Doppler vibration measuring instrument,The BBM vibration testing equipment, data acquisition and analysis system are composed of the engine gas distribution mechanism to study the dynamic characteristics of the gas distribution mechanism, and then develop and optimize the design of the gas distribution mechanism.

The incline test bench is mainly used to simulate the working conditions of various inclined states such as aero engine climbing and diving, and verify whether the engine's lubrication system, fuel supply system, and cooling system can meet functional needs at specific or extreme inclination angles. The ultimate inclination angles in four directions of this test bench (front, rear, left, and right) can reach the limit inclination angles.45 degrees.

picture7：Tilt test bench (homemade)

In order to conduct paddle-engine matching, vibration, and long-lasting test drive on aviation piston engines, the Haery Testing Center has independently designed and developed it3 small and medium-sized propeller test benches can measure the engine speed, torque, thrust during the propeller matching, engine combustion characteristics and temperature and pressure of each major component during the test. The propeller test bench can be moved to the outside field for relatively temperature, low temperature, and relatively raw environmental tests.

picture8: Spiral test bench(self made)

The test center introduced the Fourier transform infrared spectroscopy analyzer (AVL-FTIR) emission equipment and have the testing capability to meet the Euro VI emission requirements.useBBM-PAKThe equipment conducts structural vibration, order analysis, torsional vibration, modal test, noise source identification, etc. on the entire machine and parts.NVH testing, and some test pieces are reproducible and trustworthy verification on the vibration table. In addition, fuel consumption meter (AVL735), smoke meter (AVL439, AVL415), combustion analyzer, endoscope, oil gas content meter, oil temperature controller, speed laser Doppler vibration measuring instrument and other equipment all use advanced foreign technology test equipment, which effectively ensures the development and verification of piston aircraft engines.

Haery Testing Center Products:

Haery Testing Center is currentlyIndependent and forward research and developmentOne aviation gasoline and two aviation heavy oil piston engines have overcome seven key common technologies (fast combustion, fuel system and electronic control, dry lubrication system, lightweight design, low-temperature trusted start-up, supercharged intercooling, trusted durability) around three products, and further verified the empty fast cooling technology.

ü"Hummingbird" engine：

A total of 30 have been carried outTest prototype test, complete digital prototype and detailed design freeze, system and complete machineCAE analysis work and ignition for the first time, the 50h propeller table test was completed. The problems of cylinder content accumulation efficiency, compression combustion technology, oil-free technology, electronic fuel-controlled fuel technology and other problems have been overcome.

picture9："Hummingbird" engine

ü"Hundredspirit"engine:

A total of17 test prototypes were tested, and the engine ignition, piston bowl selection, airway selection, fuel injector selection, development of electronic control dual redundant systems, preliminary verification of dry lubrication systems, and lightweight structural design; problems such as fault mode recognition and system switching control of electronic control dual redundant systems have been overcome;

picture10："Hundredspirit"engine

"Skylark" engine:

A total of 40 test prototypes have been conducted, and the engine ignition, combustion chamber selection, airway selection, camshaft line selection, supercharger selection, lightweight design of the whole machine, cooling system function development, electronic control system function development, wet lubrication system function development tests have been completed; the problems of instability in the cylinder combustion, uneven heat exchange of cylinder water sleeves, and insufficient oil return capacity of the lubrication system have been overcome.

picture11："Skylark" engine

In order to improve the management capabilities of the test center, a laboratory will be established laterThe TPCAMS test management system can realize the electronic and paperless process from test report → test end → report approval process. The test bench using AVL PUMA-HOST/CAMEO software can realize unattended and automatic operation of trustworthiness tests. The CNAS system operates in accordance with the testing and calibration laboratory capabilities support guidelines. In order to achieve scientific methods, fair behavior, accurate results, and standardized services, data and reports are equivalent to each other worldwide.

Haery plans to independently develop and build the world's advanced piston aero engine companies in the research and development, testing, trial production and testing of small and medium-sized aero engines in five years, and will become an enterprise with the ability to develop small and medium-sized turbine aero engines independently in the future. Meet the power needs of military and civilian drones and small navigation aircraft.