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This chapter examines the import and meaning of the terms sempiternitas , perpetuitas , and aeviternitas or aevum. The terms sempiternitas and perpetuitas were often used interchangeably since they were basically used to refer to limitless particulars and their durations.
Alabama reusable rocket-drone could launch satellites every 3 hours | Daily Mail Online
Medieval figures recognized two types of limitlessness: durations which had no end and durations which had neither a beginning nor an end. As the terms perpetuitas and sempiternitas could be used of both kinds of durations, it is not unusual to find them used of God, angels, souls, and heavenly bodies. The terms aeviternitas and aevum were often used in a similar way, and were sometimes used synonymously with perpetuitas and sempiternitas.
Nevertheless, there were serious disagreements amongst 13th century thinkers about the nature of the aevum, in particular whether it was extended or not. Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.
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Please, subscribe or login to access full text content. Alabama-based startup, Aevum, is testing a rocket-drone plane that can send small satellites into orbit from a normal runway. The firm claims that its fully autonomous system will drive down the cost of launches and make them as frequent as commercial flights. Artist's illustration showing Aevum's Ravn air-launch system in action.
The rocket-drone plane will send small satellites into orbit from a normal runway.
The firm claims that its fully autonomous system will drive down the cost of launches. He added that the typical turn time, from landing to takeoff, for a commercial aircraft can range from 30 to 80 minutes. The Ravn system is unmanned which means ground operations don't require a huge amount of staff. The autopilot software programme, known as Minnie, has already completed nearly test launch simulations.
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The first stage of Ravn consists of a reusable, autonomous unmanned aircraft system capable of travelling at Mach 2. This will ferry rockets from the ground and into the sky before they release and enter orbit. According to Mr Skylus, these rocket engines have already been 'hot-fire demonstrated'. Mr Skylus believes as few as six people could complete the launches and is due to undergo test launches towards the end of , Aevum eventually intends to become the 'UPS or FedEx of space'. Army and away from home during that time, the news felt personal to me,' Mr Skylus said. Aevum is a company that was founded in Alabama and intends to create a plane-rocket combination capable of putting a satellite into space once every three hours.
Unlike other firms that are attaching rockets to planes and launching them into orbit once airborne, Aevum will be unmanned.
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Without a crew or a pilot, it is designed to be run by just six people. It will be autonomous from the minute it left the hangar until the moment it lands. This is in stark contrast to other systems, such as Nasa's Pegasus rocket attached to the plane 'Stargazer'.
Sempiternity, Angelic Time, and the Aevum
As a result of the streamlined process, the firm hopes to be able to launch every three hours, releasing a satellite into space every time. The goal, according to the company's CEO Jay Skylus, is to improve communications worldwide, and maybe even establish a global wireless internet network. John Duns Scotus : Renewal of Philosophy. Bos ed. Downloads Sorry, there are not enough data points to plot this chart.
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History of Western Philosophy. Normative ethics. Philosophy of biology. Philosophy of language. Philosophy of mind. Philosophy of religion.
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