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  • 1
    Publication Date: 2019-07-13
    Description: Air transportation is critical to U.S. and Global economic vitality. However, energy and climate issues challenge aviations ability to be sustainable in the long term. Aviation must dramatically reduce fuel use and related emissions. Energy costs to U.S. airlines nearly tripled between 1995 and 2011, and continue to be the highest percentage of operating costs. The NASA Advanced Air Transports Technology Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advanced technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. The presentation will highlight the NASA vision of revolutionary systems and propulsion technologies needed to achieve these challenging goals. Specifically, the primary focus is on the N+3 generation; that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe, which are envisioned as being powered by Hybrid Electric Propulsion Systems.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN23468 , AIAA Distinguished Lectureship; 12-May-15; Cleveland, OH; United States
    Format: application/pdf
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  • 2
    Publication Date: 2019-07-13
    Description: Presentation to Aerospace Electrical Systems Expo, providing an overview of NASA's work on hybrid electric and all electric propulsion and projecting technology needs.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN23587 , Aerospace Electrical Systems Expo 2015; 19-21 May 2015; Long Beach, CA; United States
    Format: application/pdf
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  • 3
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Propulsion and Power
    Type: E-663270 , AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit; 30 Jul. - 1 Aug. 2012; Atlanta, GA; United States
    Format: application/pdf
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  • 4
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Propulsion and Power
    Type: E-663266 , Aircraft Noise and Emissions Reduction Symposium (ANERS); 25-27 Oct. 2011; Marseille; France
    Format: application/pdf
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  • 5
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Propulsion and Power
    Type: E-663265 , ISABE Conference; 12-16 Sep. 2011; Gothenberg; Sweden
    Format: application/pdf
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  • 6
    Publication Date: 2019-07-13
    Description: Center Director Free is providing the Keynote at the Disruptive Propulsion Conference, sponsored by Cranfield University, Cranfield, Bedfordshire, England in November. Director Free will be presenting a PowerPoint presentation titled, NASA Green Propulsion Technologies Pushing Aviation to New Heights at both the conference and a meeting at the Royal Aeronautical Society.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN18619 , Disruptive Green Propulsion Technologies-Beyond the Competitive Horizon; 17-18 Nov. 2014; London; United Kingdom
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  • 7
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    In:  CASI
    Publication Date: 2019-07-13
    Description: The benefits of electrified aircraft propulsion improves aircrafts like single aisle transports, enables new configurations of vertical take-off landing aircrafts and revitalizes the economic case for small short-range aircraft services. Future strategies and markets for supersonic and commercial transport are proposed.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN58749 , AIAA Propulsion & Energy Forum; 9-11 Jul. 2018; Cincinnati, OH; United States
    Format: application/pdf
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  • 8
    Publication Date: 2019-09-20
    Description: Air transportation is critical to U.S. and Global economic vitality. However, energy and climate issues challenge aviation's ability to be sustainable in the long term. Aviation must dramatically reduce fuel use and related emissions. Energy costs to U.S. airlines nearly tripled between 1995 and 2011, and continue to be the highest percentage of operating costs. The NASA Advanced Air Transports Technology Project addresses the comprehensive challenge of enabling revolutionary energy efficiency improvements in subsonic transport aircraft combined with dramatic reductions in harmful emissions and perceived noise to facilitate sustained growth of the air transportation system. Advanced technologies and the development of unconventional aircraft systems offer the potential to achieve these improvements. The presentation will highlight the NASA vision of revolutionary systems and propulsion technologies needed to achieve these challenging goals. Specifically, the primary focus is on the N+3 generation; that is, vehicles that are three generations beyond the current state of the art, requiring mature technology solutions in the 2025-30 timeframe.
    Keywords: Aircraft Propulsion and Power
    Type: GRC-E-DAA-TN20707 , OSU Aerospace Graduate Student Seminar; Jan 30, 2015; Columbus, OH; United States
    Format: application/pdf
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  • 9
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    Makati City: Philippine Institute for Development Studies (PIDS)
    Publication Date: 2016-02-10
    Description: The 2011 and 2012 fiscal program appears to score high in terms of contributing to the speed of fiscal consolidation despite limited gains in revenue generation. This came about largely because of fairly serious underspending during the first nine months of 2011. The slow utilization of spending authority has been attributed to the diligence that many government agencies have directed on the contracting/procurement process given the new administration's focus on anticorruption and good governance. However, it cannot be denied that such "underspending" necessarily contributed to the lower-than-target rate of economic growth. The proposed expenditure program for 2012 is PHP 171 billion (or 10.4%) higher than the PHP 1.6 trillion expenditure program for 2011. Close to two-thirds of the increment in the proposed expenditure program net of debt service is captured by the social service sectors and the economic service sectors combined. In particular, 33.2% of the increment in the expenditure program net of debt service in 2012 relative to the 2011 program is allocated for all the social service sectors combined while 31.0% of the increment is alloted for all the economic service sectors as a group. In a sense, the bias toward the social service sectors that was very much evident in the national government expenditure program in 2011 has been replaced by a more balanced distribution between the social services sectors and the economic services sectors. Despite the higher allocation that is provided the economic services sectors (particularly, infrastructure) under the 2012 National Expenditure Program, the level of national government spending on the infrastructure sector compares unfavorably with the amount of resources needed to achieve high, sustained, and inclusive growth. On the other hand, 2012 spending levels on education, health, and social welfare services will continue to lag behind those of other countries in the region. Moreover, programmed national government spending on basic education is estimated to fall short of the amount required to achieve the MDG target for education. Given the evidence that significant levels of unmet needs are not being addressed, this study echoes previous calls for government to recognize that national government revenues has to expand at a faster rate than has been demonstrated by the collection agencies so far. Although there is evidence that some gains have been made in BIR tax effort since the Aquino II administration came into power, the improvement in tax effort to date pales in comparison with the amount needed to achieve sustained and inclusive growth with fiscal consolidation. Furthermore a comparison of actual revenue collection in January–September 2011 with that in January–June 2011 also suggests that the pace of improvements (or lack of it) in tax administration may have faltered in the third quarter of the year. It is, thus, critical that efforts toward improving collection efficiency be renewed and re-invigorated in the fourth quarter.
    Keywords: ddc:330 ; fiscal deficit ; Philippines ; government spending ; fiscal consolidation ; domestic worker emigration ; emigration regulations ; emigration policy improvement ; socialized housing ; budget share ; revenue program ; 4Ps ; irrigation investments ; Haushaltsdefizit ; Öffentliche Ausgaben ; Haushaltskonsolidierung ; Haushaltsplanung ; Philippinen
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 10
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    Makati City: Philippine Institute for Development Studies (PIDS)
    Publication Date: 2016-02-10
    Description: This study presents an evaluation of the National Expenditure Program for 2013. First, this paper projects that the fiscal targets set out in the Budget of Expenditures and Sources of Financing (BESF) for 2013 are likely to be met. Specifically, fiscal deficit is projected to be PHP 9.6 billion lower than the BESF at PHP 231 billion, while government revenue is estimated to be equal to PHP 1.8 trillion in 2013 which is also higher than the BESF projection. This is despite the expectation that the BOC collections and nontax revenues will be just equal to the 2011 and 2012 levels. Additional revenues is thus sourced from the BIR collections, which is estimated to reach PHP 1.26 trillion in 2013, exceeding the President's Budget's estimate of PHP 1.24 trillion. Second, although a more balanced distribution of the budget between the social services and economic services sectors is emphasized in the 2013 National Expenditure Program, the services sector still accounts for more than half of the increase in expenditure program in 2013. Finally, the improving debt profile of the country will continue in 2013. National government borrowing will continue to be biased in favor of domestic borrowings.
    Keywords: ddc:330 ; fiscal deficit ; tax effort ; fiscal sustainability ; expenditure program ; Philippines ; budget share ; revenue program ; financing program
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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