The ball lock separation mechanism is used in space vehicles. Various parts of space vehicles have to be separated during flight, to jettison burnt out rocket stages and components that are no longer needed, to uncover equipment, or to deploy payloads. In this paper the detailed analysis of a „Ball Lock release mechanism‟ designed to meet customer specific conditions is presented. Multi-body si...

A new spatial-related mechanism is proposed to understand separation hysteresis processes in curved compression ramp (CCR) flows discovered recently (Hu et al. Phy. Fluid, 32(11): 113601, 2020). Two hystereses, induced by variations of Mach number and wall temperature, are investigated numerically. The two hystereses indicate that there must exist parameter intervals wherein both attachment sta...

A functional reliability simulation method based on the Kriging model is proposed to efficiently evaluate of low-shock separation nuts. First, a deterministic function nut established. Second, working load, geometric dimensions and propellant combustion parameters are introduced establish nonlinear implicit in different stages, used display function. Finally, workflow established, sensitivity a...

This project addressed the conceptual fundamentals of data storage, investigating techniques for provision of highly generic storage facilities that can be tailored to produce various individually customised storage infrastructures, compliant to the needs of particular applications. This requires the separation of mechanism and policy wherever possible. Aspirations include: actors, whether user...

Most scientific communities have recently established policies and mechanisms to put into practice electronic conference management, mainly by exploiting the Internet as the communication and cooperation infrastructure. Their foremost objective is to reduce the operational and communication costs but to maintain high quality reviewing and the fairness of the evaluation process. Interestingly, w...

Mandatory access control (MAC) mechanisms control which users or processes have access to which resources in a system. MAC policies are increasingly specified to facilitate managing and maintaining access control. However, the correct specification of the policies is a very challenging problem. To formally and precisely capture the security properties that MAC should adhere to, MAC models are u...

Since networks and computing systems are vital components of today's life, it is of utmost importance to endow them with the capability to survive physical and logical faults, as well as malicious or deliberate attacks. When the information system is obtained by federating pre-existing local systems, a methodology is needed to integrate security policies and mechanisms under a uniform structure...