飞机结构4. Definitions4. 定义A. The definitions of primary and secondary structures are as follows: A. 定义基本的和次级的结构依下列各项:WARNING: THE FAILURE OF PSE’S COULD RESULT IN THE CATASTROPHIC FAILURE OF THE AIRPLANE.警告: PSE （主要构件）的失效可以造成飞机灾难性的故障。
(1) Primary Structure: Structure which carries flight, ground, or pressure loads. Primary structure is classified into two categories: Principal Structural Elements (PSE) and Other Structure. Most of the primary structures on the airplane are Principal Structural Elements (PSE). PSEs are also known as Structural Significant Items (SSI). (1) 基本结构:承传受飞行, 地面, 或压力载荷的结构。
基本的结构又分为两类: 主要构件 (PSE) 和其他构件。
飞机上的大部分基本结构是主要构件(PSE). PSEs （主要构件）也是被作为结构的重要项目(SSI).(a) Principal Structural Elements (PSE): Primary structure which contribute significantly to carrying flight, ground, and pressurization loads, and whose failure could result in the catastrophic failure of the airplane.(1) 主要构件 (PSE):主要承受飞行, 地面, 和压力载荷的基本结构,这些构件的失效将造成飞机的灾难性故障。
(b) Other Structure: Primary structure that is not a Principal Structural Element (PSE).(b) 其他的结构: 基本结构中不是主要构件的部分 (PSE).(2) Secondary Structure: Structure which carries only air or inertial loads generated on or within the secondary structure. Most secondary structures are important to the aerodynamic performance of the airplane.(2) 次级结构:承受空气或次级结构本身产生的惯性载荷的结构。
大部分次级结构对飞行的气动性能很重要。
修理定义1. ApplicabilityA. This subject gives the definitions related to repairclassification and inspection for damage-tolerantand non-damage tolerant primary and secondary structures as applicable.2. ReferencesReference Title51-10-02 INSPECTION AND REMOVAL OF DAMAGESOPM 20-20-01 Magnetic Particle InspectionSOPM 20-20-02 Penetrant Methods of Inspection3. General InformationA. There are two classifications of repairs in this SRM:(1) Repairs that have been evaluated and analyzed for damage tolerance capability and areclassified as Category A, B, or C repairs.NOTE: Repairs to Principle Structural Elements (PSE’s) in the wing,nacelle and pylonstructures (identified in 51-00-04) are required to be evaluated for damagetolerance capability.(2) Repairs that have not been evaluated and analyzed for damage tolerance capability and areclassified as Permanent, Interim or Time-Limited Repairs. These classifications apply to allfuselage and empennage repairsB. The definitions of the different categories of damage tolerant repairs are as follows:(1) Category A Repair: A permanent repair for which the inspections given in the MaintenancePlanning Data (MPD) document, are sufficient and no other actions are necessary.(2) Category B Repair: A permanent repair for which supplemental inspections are necessary at thespecified threshold and repeat intervals.(3) Category C Repair: A time-limited repair which must be replaced and reworked within aspecified time limit. Also supplemental inspections can be necessary at a specified thresholdand repeat interval.C. The definitions of the different types of repairs that have not been evaluated and analyzed fordamage tolerance are as follows:(1) Permanent Repair: A repair where no action is necessary except the operator’s normalmaintenance.(2) Interim Repair: A repair that has the necessary structural strength and could stay on the aircraftindefinitely. The repair must be inspected at specified intervals andreplaced if deterioration isdetected or damage is found.(3) Time-Limited Repair: A repair that has the necessary structural strength but does not havesufficient durability. This repair must be replaced after a specified time, usually given as anumber of flight cycles, flight hours or a calendar time.D. The definitions of the terms as they apply to the repairs are as follows:(1) Damage Tolerance: The ability of structure to sustain anticipated loads in the presence ofdamage, such as fatigue cracks until it is detected throughinspection or malfunction andrepaired.(2) Damage Tolerant Repair: A repair that meets the necessary damage tolerance conditions1. 适用性A. 这主题给予定义相关的到修理分类和检验为损害-宽容的而且非损害宽容的主要和中级的结构当做可适用。
2. 叁考叁考名称51-10-02次检验及损害的移动SOPM 20-20-01 磁性粒子检验SOPM 20-20-02 渗透剂检验的方法3. 数据上将有修理的二分类在这一 SRM 中的 A.:(1) 修理有是评估和分析为损害宽容能力和是机密的当做种类 A 、 B 或 C 修理。
注意: 在翅膀、飞机的引擎机舱和派龙中的对原则结构的元素 (PSE) 的修理结构 (在 51-00-04 年识别) 是必需的是评估为损害宽容能力。
(2) 修理有不是评估和分析为损害宽容能力和是机密的当做烫发、中间时期或时限修理。
这些分类适用于所有的机身和尾部修理B. 损害的不同种类的定义宽容的修理依下列各项:(1) 种类修理: 烫发修理为哪一个检验给予的在维护中计划数据 (MPD) 文件, 是充份和没有其他的行动是必需品。
(2) 种类 B 修理: 烫发修理为哪些补充的检验是必需品在那指定的门槛和重复间隔。