Geological and Botanical Features of Sand Beach Systems in Maine and Their Relevance to the Critical Areas Program of the State Planning Office

Geological and Botanical Features of Sand Beach Systems in Maine and Their Relevance to the Critical Areas Program of the State Planning Office by Bruce W. Nelson and L. Kenneth Fink, Jr. A Report Prepared for the Maine Critical Areas Program, State Planning Office, Augusta, Maine 04330 - Planning Report Number 54 (14 March 1978). Contents: Abstract / Foreword / Acknowledgements / Geology, Distribution, and Geomorphology of Maine\u27s Coastal Sandy Beaches and Dune Systems / Methods of Locating Sandy Beaches and Dunes / General Consideration in Developing Criteria for Inclusion in the List of Significant Coastal Sandy Beaches and Dunes / Geological Criteria for Significance / Botanical Criteria for Significance / General Information on Coastal Sandy Dune Plant Species and Associations / Partial List of Maine\u27s Berm and Dune Plants / Description of Significant Maine Sandy Beaches / General Evaluation of Sandy Beaches for Inclusion on the Register of Critical Areas / Recommendations / Bibliographyhttps://digitalcommons.usm.maine.edu/me_collection/1083/thumbnail.jp

Full-scale wind-tunnel investigation of static longtudinal and lateral characteristics of a light twin-engine airplane

Full scale wind tunnel investigation of lateral and longitudinal stability and control characteristics of light twin engine airplan

Logistics Reduction Technologies for Exploration Missions

Human exploration missions under study are limited by the launch mass capacity of existing and planned launch vehicles. The logistical mass of crew items is typically considered separate from the vehicle structure, habitat outfitting, and life support systems. Although mass is typically the focus of exploration missions, due to its strong impact on launch vehicle and habitable volume for the crew, logistics volume also needs to be considered. NASA's Advanced Exploration Systems (AES) Logistics Reduction and Repurposing (LRR) Project is developing six logistics technologies guided by a systems engineering cradle-to-grave approach to enable after-use crew items to augment vehicle systems. Specifically, AES LRR is investigating the direct reduction of clothing mass, the repurposing of logistical packaging, the use of autonomous logistics management technologies, the processing of spent crew items to benefit radiation shielding and water recovery, and the conversion of trash to propulsion gases. Reduction of mass has a corresponding and significant impact to logistical volume. The reduction of logistical volume can reduce the overall pressurized vehicle mass directly, or indirectly benefit the mission by allowing for an increase in habitable volume during the mission. The systematic implementation of these types of technologies will increase launch mass efficiency by enabling items to be used for secondary purposes and improve the habitability of the vehicle as mission durations increase. Early studies have shown that the use of advanced logistics technologies can save approximately 20 m(sup 3) of volume during transit alone for a six-person Mars conjunction class mission

Logistics Reduction Technologies for Exploration Missions

Human exploration missions under study are very limited by the launch mass capacity of existing and planned vehicles. The logistical mass of crew items is typically considered separate from the vehicle structure, habitat outfitting, and life support systems. Consequently, crew item logistical mass is typically competing with vehicle systems for mass allocation. NASA's Advanced Exploration Systems (AES) Logistics Reduction and Repurposing (LRR) Project is developing five logistics technologies guided by a systems engineering cradletograve approach to enable used crew items to augment vehicle systems. Specifically, AES LRR is investigating the direct reduction of clothing mass, the repurposing of logistical packaging, the use of autonomous logistics management technologies, the processing of spent crew items to benefit radiation shielding and water recovery, and the conversion of trash to propulsion gases. The systematic implementation of these types of technologies will increase launch mass efficiency by enabling items to be used for secondary purposes and improve the habitability of the vehicle as the mission duration increases. This paper provides a description and the challenges of the five technologies under development and the estimated overall mission benefits of each technology