Showing papers on "Mixed reality published in 1970"

From concept to reality.

Abstract: Despite decades of research and development on spin and spin-recovery characteristics, stall/spin accidents continued to plague the military and civil communities up to the 1970s. In the 1970s, however, two concepts suddenly dominated research activities and resulted in dramatic improvements in the stall/spin behavior of aircraft configurations. One engineering concept was the technical approach of using emerging advanced flight control systems for automatic spin prevention and spin recovery. For years automatic flight control systems could recognize the loss of control and incipient-spin conditions more quickly than the human pilot and could apply corrective controls before the aircraft could enter a developed spin. In fact, if the control loops were tight enough, the control system could be tuned to prevent the incipient spins; this would provide carefree maneuvers and flight operations for the pilot. This concept was particularly appealing for advanced military aircraft configurations, which were frequently flown in the hazardous high-angle-of-attack environment. Unfortunately, the flight control systems used prior to the 1970s did not utilize the flight parameters necessary for automatic spin prevention. If a unique auxiliary spin-prevention system had been implemented during that time period, it would have operated very infrequently, and the probability of failure or maintenance problems were major issues that blocked the implementation of the concept. However, in the 1970s, flight control systems of advanced military aircraft began using feedback from virtually all flight parameters; this permitted the design and integration of automatic spin-prevention systems into the normal flight control system. Such systems have had a profound beneficial impact on current military aircraft and significantly improved the flying qualities of high-performance aircraft at high angles of attack and spin resistance, as well as avoiding the loss of pilot lives and the cost of aircraft destroyed in accidents.

Second Life Mixed Reality Broadcasts: A Timeline of Practical Experiments at the NASA CoLab Island

Abstract: Personnel at the Second Life NASA CoLab island have been experimenting with providing live, virtual world broadcast events for the benefit of the space and technology community. The broadcasts range from simple one-way stream feeds to more complex two-way interactive events. This paper will provide background information about the NASA CoLab, sketch an evolutionary timeline of experimental events held at the NASA CoLab island, and compare a couple of similar two-way mixed reality events.

Brave new world: Mobile phones, museums and learning - how and why to use Augmented Reality within museums

Abstract: This article deals with mobile technologies as tools for learning within museums. Using the presentation of EGO-TRAP – an exhibition which uses mo- bile technologies as the technical platform for creating an Augmented Reality – as my point of departure, I will discuss the advantages of using mobiles as tools for learning in museums. EGO-TRAP may be seen as a first modest step into a new museum paradigm. On the basis of a brief outline of the change of paradigms within museums I propose a new paradigm based on interactivity, narration and virtuality embedded in an Augmented Reality with an educational aim. This kind of Augmented Reality, I argue, seems to satisfy the demands of hands-on experiences, narrative structure and individual experiences, which I point out as being crucial for a beneficial learning experience at museums.