航空发动机滑油系统断油时主推力球轴承的瞬态热分析  

Transient Thermal Analysis of Main Thrust Ball Bearing During Fuel Cut off for Aeroengine Oil System

作　　者：苏壮[1] 李国权[1] 

机构地区：[1]沈阳发动机设计研究所,沈阳110015

出　　处：《航空发动机》2009年第2期24-29,共6页Aeroengine

摘　　要：对在航空发动机滑油系统断油时的主推力球轴承瞬态热进行了分析。在分析基础上,应用弹流润滑理论给出了主推力球轴承产生损伤的条件,确定了中断供油时主推力球轴承的允许极限温升,或允许中断供油时主推力球轴承安全工作的极限时间,从而给出了主推力球轴承中断供油30s的安全余度。计算及其结果可为发动机整机试车及润滑系统设计提供参考。The transient thermal analysis of the main thrust ball bearing was performed during fuel cut off for an aeroengine oil system. The condition af the main thrust ball bearing damaging was given by using the elastohydrodynamic （EHL） lubrication theory based on the analysis. The tolerance limiting temperature rise or the time limit in the safety of the main thrust ball bearing during fuel cut off were determined to give the safe margins af main thrust ball bearing with fuel cut off 30 seconds. The calculation results can provide reference for the aeroengine test and the design of the lubrication system.

关 键 词：滑油系统 主推力球轴承 航空发动机 断油 热分析 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程] TH133.3[机械工程—机械制造及自动化]