APT has successfully developed fuel pump for a high-thrust (35 tons) commercial turbofan engine. The product comprises a centrifugal booster stage and a gear pump high-pressure stage, delivers high output pressure (>16.5MPa), high power (>160KW), and targets a high MTBF (>80,000 hours). The design faced formidable challenges, including the gear stage design for high output pressure, large flow, and high volumetric efficiency; bearing design for low viscosity, high-pressure loads; optimized matching of centrifugal and gear stages; structurally designed for high internal stress and low weight; and the overall optimization for multiple parameters in extreme conditions to achieve a long MTBF with high reliability. APT's core technology and extensive R&D experience, fuels the journey to success!

The aviation fuel pump comprises a boost stage consisting of an inducer and a centrifugal impeller, a high pressure stage formed by a gear pump, a high-flow pressure regulating valve, a series of filtration devices and sealing devices, making the system integration highly complex. APT's proprietary series of technologies, design tools, and calculation methods enable the optimization and coordination of various subsystems at the system level. This ensures better matching of each module, achieving optimal performance.

Leveraging rich experience in the aviation industry, APT ensures that the research, design, process management, inputs & outputs of the aviation products strictly adhere to aviation industry standards or specific standards required by customers. The design incorporates materials, machining, heat treatment, surface treatment, inspection, standard parts, etc., in accordance with high aviation standards.

Given the aerospace product's specific requirements for reliability, weight, materials, and processes, lube pumps typically employ internal meshing trochoidal rotor pumps or involute crescent pumps. APT with proprietary technologies such as profile technology and optimized oil groove design, imparts outstanding performance to aviation oil pumps: the supply stage exhibits excellent volumetric efficiency and low-pressure pulsation; the scavange stage operates stably under ultra-low inlet pressure and intermittent oil supply conditions; low vibration and noise, no cavitation damage, and lightweight construction.

The adoption of a multi-stage pump structure for compactness and weight reduction can lead to issues such as system vibration, wear, and leakage. Leveraging rich design experience and specialized design methods, APT conducts system-level optimization for multi-stage pumps. This significantly enhances the performance and lifespan of each stage bearing, reduces system vibrations, reduces error accumulation, ensuring the performance and reliability.