Based on the analysis on the lifetime and reliability of spacecraft in orbit, a new concept of basic mission lifetime of spacecraft is proposed, and its applications to lifetime prediction and reliability evaluation of spacecraft in orbit are discussed.

Approach of calendar life extension for aircraft structures;

This article briefs the present status and technical characteristies of various kinds of hot spraying techniques,and details the application status of supersonic arc spraying (SAS) technique in the life extension and restoration of power plant equipment,such as on the steel structural components,"four tubes" exposed surface,fan wheel,blades of steam turbines.

The identification of the weak points is essential for inspection and life extension repair of the structures.

This paper introduces the fatigue test of full scale aeroplane wings which serves as the basis of life lengthening analysis for aged aeroplanes.