Abstract: Many problems exist in processing experimental aircraft load spectrum data and generating the load spectrum based on Web application, such as the need to deal with both structural and non-structural data, weak capacity of the client browser for data processing and massive network data transferring, etc. To solve the above problems, a four-layer resource management model is established based on rich internet application (RIA), which includes a data layer, a business logic layer, a presentation layer, and a client software layer. The aircraft load spectrum data storage and management system is developed by ASP.NET according to component conception, in which the client software layer sent requests and treated experimental data using custom protocol from the document server group. In the four-layer system, the client software (rich client) with built in browser is enhanced to process and share real-time experimental data. The resource management system changed the method to process aircraft experimental data, and the way to data treatment by single host or local area network (LAN) sharing is abandoned. The new pattern based on Web applications can provide scientific basis for aircraft life determination, extension, and deign through an experimental data management and sharing system.

Key words: aircraft load spectrum database, four-layer model, RIA framework, ASP.NET, load testing