Impact of solar storms on high altitude long endurance unmanned aircraft and airship design and operations

Newcome, Laurence R.

doi:10.1017/s0001924000001482

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…A wing/airship arrangement can particularly be found in one of proposed wing/propulsion modules by Liu and Liou (2006), as well as in many envisioned airship concepts for the future (Snodgrass, 2007). Despite the fact that airships are constantly proposed for different missions (Wang et al , 2009; Dorrington, 2005; Newcome, 2006; Folks, 2008; Miller et al , 2005), a basic system engineering perspective reveals that many safety assessment processes associated with airships are more convoluted than airplanes. Different system usage choices at different phases of operation and shared functions between systems are examples of these complexities (Schaefer, 2002).…”

Section: Traces Of the Guav Technologiesmentioning

confidence: 99%

Ceramic engine considerations for future aerospace propulsion

Gohardani

2012

Aircraft Engineering and Aerospace Technology

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Purpose -The purpose of this paper is to outline the potential usage of ceramic engines in combination with other technologies as a possible propulsion contender for future aerospace applications. Design/methodology/approach -The possibility of enabling novel propulsion systems in aerospace engineering is examined through a multilateral review study concerning ceramic engines and a proposed design approach. In view of the benefits and challenges of employing ceramic engines as possible candidates for the sustainable solutions of the future, a fundamental design proposal is presented for a conceptual generic unmanned air vehicle (GUAV). Findings -The findings of this article identify a number of useful scenarios for future ceramic engine applications and considerations. Research limitations/implications -It is imperative to emphasize that this conceptual article solely sheds light on a limited number of key ideas associated with ceramic engines and their possible applications. Thus, many new areas may emerge and impact the application of ceramic engines in light of more in-depth conceptual studies. Practical implications -Implications of ceramic engine utilization in aeronautical applications may result in enhanced performance characteristics and less operational costs. Further implications could possibly be extended to various naval/automotive applications and new configurations of transportation vehicles. Social implications -The paper aims to generate an interest amongst younger individuals and environmental aware enthusiasts to consider ceramic engines for transportation applications to a greater extent than before. Originality/value -The implementation of this particular conceptual design results in a synergistic ceramic engine combination with a hybrid airship design in novel aeronautical applications.

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Section: Traces Of the Guav Technologiesmentioning

confidence: 99%

Ceramic engine considerations for future aerospace propulsion

Gohardani

2012

Aircraft Engineering and Aerospace Technology

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Cosmic Radiation Exposure of Future Hypersonic Flight Missions

Koops

2016

Radiation Protection Dosimetry

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Cosmic radiation exposure in air traffic grows with flight altitude, geographical latitude and flight time. For future high-speed intercontinental point-to-point travel, the trade-off between reduced flight time and enhanced dose rate at higher flight altitudes is investigated. Various representative (partly) hypersonic cruise missions are considered and in dependence on solar activity the integral route dose is calculated for envisaged flight profiles and trajectories. Our results are compared to those for corresponding air connections served by present day subsonic airliners. During solar maximum, we find a significant reduction in route dose for all considered high-speed missions compared to the subsonic reference. However, during solar minimum, comparable or somewhat larger doses result on transpolar trajectories with (partly) hypersonic cruise at Mach 5. Both solar activity and routing are hence found to determine, whether passengers can profit from shorter flight times in terms of radiation exposure, despite of altitude-induced higher dose rates. Yet, aircrews with fixed number of block hours are always subject to larger annual doses, which in the considered cases take values up to five times the reference. We comment on the implications of our results for route planning and aviation decision-making in the absence of radiation shielding solutions.

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Impact of solar storms on high altitude long endurance unmanned aircraft and airship design and operations

Cited by 2 publications

References 4 publications

Ceramic engine considerations for future aerospace propulsion

Ceramic engine considerations for future aerospace propulsion

Cosmic Radiation Exposure of Future Hypersonic Flight Missions

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