Summary Highlights of the Advanced Rotorcraft Transmission (ART) Program

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ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Summary Highlights of the Advanced Rotorcraft Transmission (ART) Program by :

Download or read book Summary Highlights of the Advanced Rotorcraft Transmission (ART) Program written by and published by . This book was released on 1992 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Rotorcraft Transmission (ART) program is an Army-funded, joint Army/NASA program to develop and demonstrate lightweight, quiet, durable drivetrain systems for next generation rotorcraft. Contract participants in ART include Boeing Helicopters, Sikorsky Aircraft, McDonnell Douglas Helicopter Company, and Bell Helicopter Textron, Inc., with some in-house technical support provided at Lewis Research Center. ART addresses the drivetrain requirements of two distinct next generation aircraft classes: (1) Future Air Attack Vehicle, a 10,000 to 20,000 lb aircraft capable of undertaking tactical support and air-to-air missions; (2) Advanced Cargo Aircraft, a 60,000 to 80,000 lb aircraft capable of heavy lift field support operations. Both tiltrotor and more conventional helicopter configurations are included in the ART program Specific objectives of ART include reduction of drivetrain weight by 25 percent compared to baseline state- of-the-art drive systems configured and sized for the next generation aircraft, reduction of noise level at the transmission source by 10 dB relative to a suitably sized and configured baseline, and attainment of at least a 5000 hr mean-time-between-removal. The technical approach for achieving the ART goals includes application of the latest available component, material, and lubrication technology to advanced concept drivetrains that utilize new ideas in gear configuration, transmission layout, and airframe drivetrain integration. To date, candidate drivetrain systems have been carried to a conceptual design stage, and trade-off studies have been conducted resulting in selection of an ART transmission configuration for each of the four contractors. The final selection was based on comparative weight, noise, and reliability studies.

Advanced Rotorcraft Transmission (ART) Program Summary

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ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Advanced Rotorcraft Transmission (ART) Program Summary by :

Download or read book Advanced Rotorcraft Transmission (ART) Program Summary written by and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Rotorcraft Transmission (ART) Program was initiated to advance the state-of-the-art for rotorcraft transmissions. The goal of the ART Program was to develop and demonstrate the technologies needed to reduce transmission weight by 25 percent and reduce noise by 10 dB while obtaining a 5000-hr meantime-between-removal. This paper summarizes the research done at Sikorsky Aircraft under the ART Program. A split path design was selected as best able to meet the program goals. Key component technologies needed for this design were identified, studied, and developed. Two of these technologies are discussed in detail: the load sharing of split path designs including the use of a compliant elastomeric torque splitter and the application of a high ratio, low pitch line velocity gear mesh. Development of an angular contact spherical roller bearing, transmission error analysis, and fretting fatigue testing are discussed. The technologies for a lightweight, quiet, and reliable rotorcraft transmission have been demonstrated.

Rebuilding a Great International Airport

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ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (511 download)

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Book Synopsis Rebuilding a Great International Airport by :

Download or read book Rebuilding a Great International Airport written by and published by . This book was released on 2002* with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Power Transmission Science and Technology

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Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038135461
Total Pages : 945 pages
Book Rating : 4.0/5 (381 download)

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Book Synopsis Advances in Power Transmission Science and Technology by : Ze Yong Yin

Download or read book Advances in Power Transmission Science and Technology written by Ze Yong Yin and published by Trans Tech Publications Ltd. This book was released on 2011-08-16 with total page 945 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises a selection of 202 papers covering all of the latest advances and developments in design, modeling and analysis, materials manufacturing and testing, and their engineering applications in power transmission systems. It will provide readers with a broad overview of recent progress and achievements in the field of power transmission.

Advanced Rotorcraft Transmission (ART) Program Status

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ISBN 13 :
Total Pages : pages
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Book Synopsis Advanced Rotorcraft Transmission (ART) Program Status by : Jules Kish

Download or read book Advanced Rotorcraft Transmission (ART) Program Status written by Jules Kish and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Rotorcraft Transmission Program Summary

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ISBN 13 :
Total Pages : pages
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Book Synopsis Advanced Rotorcraft Transmission Program Summary by : Robert B. Bossler

Download or read book Advanced Rotorcraft Transmission Program Summary written by Robert B. Bossler and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Transmission Studies

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ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Advanced Transmission Studies by : John J. Coy

Download or read book Advanced Transmission Studies written by John J. Coy and published by . This book was released on 1988 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advancing the technology for helicopter propulsion systems. In particular, this paper presents highlights from that portion of the program in drive train technology and the related mechanical components. The major goals of the program are to increase life, reliability, and maintainability; reduce the weight, noise, and vibration; and maintain the relatively high mechanical efficiency of the gear train. The current activity emphasizes noise reduction technology and analytical code development followed by experimental verification. Selected significant advances in technology for transmissions are reviewed, including advanced configurations and new analytical tools. Finally, the plan for transmission research in the future is presented.

Advanced Rotorcraft Transmission Program (ART).

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ISBN 13 :
Total Pages : 570 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Advanced Rotorcraft Transmission Program (ART). by :

Download or read book Advanced Rotorcraft Transmission Program (ART). written by and published by . This book was released on 1995 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effort undertaken by Boeing Defense & Space Group, Helicopters Division, to conduct the Advanced Rotorcraft Transmission (A.R.T.) program is summarized in this report. This program was structured to incorporate key emerging material and component technologies into an advanced rotorcraft transmission with the intent of making significant improvements in the state of the art The specific objectives of this program are 25 percent reduction in weight, lO-dB reduction in noise, and a 5,000 hour MTBR rotorcraft transmission. All of these objectives were attained. Boeing concentrated its work on high-gain and comparatively high risk technologies that could demonstrate the program objectives before full scale aircraft development Component development testing was conducted to evaluate high risk concepts before finalizing the advanced transmission configuration. Some of the advanced technology component tests conducted included hybrid bearings, bidirectional tapered roller bearings, precision net forged gears, active noise cancellation, titanium gears, HCRNIV tooth form spur gears, and noise reduction by variations in contact ratio and tooth form. The results of these tests are provided in this report. Trade studies conducted under this contract indicated that applying the A.R.T. drive system to a new aircraft design will have a great impact on aircraft gross weight and engine power rating requirements, in addition to a significant effect on the acquisition and operating costs of the aircraf. Potential cost savings of more than $300 million on a production run of 600 TTR aircraft or approximately half a million dollars cost reduction per aircraft could be realized.

Power Transmissions

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Publisher : CRC Press
ISBN 13 : 1315386801
Total Pages : 2126 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Power Transmissions by : Datong Qin

Download or read book Power Transmissions written by Datong Qin and published by CRC Press. This book was released on 2016-11-10 with total page 2126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents papers from the International Conference on Power Transmissions 2016, held in Chongqing, China, 27th-30th October 2016. The main objective of this conference is to provide a forum for the most recent advances, addressing the challenges in modern mechanical transmissions. The conference proceedings address all aspects of gear and power transmission technology and a range of applications. The presented papers are catalogued into three main tracks, including design, simulation and testing, materials and manufacturing, and industrial applications. The design, simulation and testing track covers topics such as new methods and designs for all types of transmissions, modelling and simulation of power transmissions, strength, fatigue, dynamics and reliability of power transmissions, lubrication and sealing technologies and theories, and fault diagnosis of power transmissions. In the materials and manufacturing track, topics include new materials and heat treatment of power transmissions, new manufacturing technologies of power transmissions, improved tools to predict future demands on production systems, new technologies for ecologically sustainable productions and those which preserve natural resources, and measuring technologies of power transmissions. The proceedings also cover the novel industrial applications of power transmissions in marine, aerospace and railway contexts, wind turbines, the automotive industry, construction machinery, and robots.

Sikorsky Aircraft Advanced Rotorcraft Transmission (Art) Program

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781724373762
Total Pages : 212 pages
Book Rating : 4.3/5 (737 download)

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Book Synopsis Sikorsky Aircraft Advanced Rotorcraft Transmission (Art) Program by : National Aeronautics and Space Administration (NASA)

Download or read book Sikorsky Aircraft Advanced Rotorcraft Transmission (Art) Program written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-27 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of the Advanced Rotorcraft Transmission program were to achieve a 25 percent weight reduction, a 10 dB noise reduction, and a 5,000 hour mean time between removals (MTBR). A three engine Army Cargo Aircraft (ACA) of 85,000 pounds gross weight was used as the baseline. Preliminary designs were conducted of split path and split torque transmissions to evaluate weight, reliability, and noise. A split path gearbox was determined to be 23 percent lighter, greater than 10 dB quieter, and almost four times more reliable than the baseline two stage planetary design. Detail design studies were conducted of the chosen split path configuration, and drawings were produced of a 1/2 size gearbox consisting of a single engine path of the split path section. Fabrication and testing was then conducted on the 1/2 size gearbox. The 1/2 size gearbox testing proved that the concept of the split path gearbox with high reduction ratio double helical output gear was sound. The improvements were attributed to extensive use of composites, spring clutches, advanced high hot hardness gear steels, the split path configuration itself, high reduction ratio, double helical gearing on the output stage, elastomeric load sharing devices, and elimination of accessory drives. Kish, Jules G. Unspecified Center NASA-CR-191079, NAS 1.26:191079, ARL-CR-49, AD-A266406 NAS3-25423; DA PROJ. 1L1-62211-A-47-A; RTOP 505-62-10...

Advanced Rotorcraft Transmission Program

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Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Advanced Rotorcraft Transmission Program by : Robert C. Bill

Download or read book Advanced Rotorcraft Transmission Program written by Robert C. Bill and published by . This book was released on 1990 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ART program is a joint Army/NASA program to develop and demonstrate lightweight, quiet, durable drivetrain systems for next generation rotorcraft. ART addresses the drivetrain requirements of two distinct next generation aircraft classes: (1) Future air attack vehicle, a 10,000 to 20,000 lb aircraft capable of undertaking tactical support and air-to-air missions; (2) Advanced cargo aircraft, a 60,000 to 80,000 lb aircraft capable of heavy lift field support operations. Both tiltrotor and more conventional helicopter configurations are included in the ART program. Specific objectives include: reduction of drivetrain weight by 25% compared to baseline state-of-the-art drive systems configured and sized for the next generation aircraft; reduction of noise level at the transmission source by 10dB relative to a suitably sized and configured baseline; and attainment of at least a 5000 hr mean-time-between- removal. The technical approach for achieving ART goals includes application of the latest available component, material, and lubrication technology to advanced concept drivetrains that use new ideas in gear configuration, transmission layout, and airframe/drivetrain integration. To date, candidate drivetrain systems have been carried to a conceptual design stage, and tradeoff studies have resulted in selection of an ART transmission configuration for each of the four contractors. The final section was based on comparative weight, noise, and reliability studies. A description of each of the selected ART designs is included in this paper.

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 772 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sikorsky Aircraft Advanced Rotorcraft Transmission (ART) Program - Final Report

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Publisher :
ISBN 13 :
Total Pages : 209 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Sikorsky Aircraft Advanced Rotorcraft Transmission (ART) Program - Final Report by : Jules G. Kish

Download or read book Sikorsky Aircraft Advanced Rotorcraft Transmission (ART) Program - Final Report written by Jules G. Kish and published by . This book was released on 1993 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of the Advanced Rotorcraft Transmission program were to achieve a 25% weight reduction, a 10 dB noise reduction, and a 5,000 hour mean time between removals (MTBR). A three engine Army Cargo Aircraft (ACA) of 85,000 pound gross weight was used as the baseline. Preliminary designs were conducted of split path and split torque transmissions to evaluate weight, reliability, and noise. A split path gearbox was determined to be 23% lighter, greater than 10 dB quieter, and almost four times more reliable than the baseline two stage planetary design. Detail design studies were conducted of the chosen split path configuration and drawings were produced of a 1/2 size gearbox consisting of a single engine path of the split path section. Fabrication and testing was then conducted on the 1/2 size gearbox. The 1/2 size gearbox testing proved that the concept of the split path gearbox with high reduction ratio double helical output gear was sound. The improvements were attributed to extensive use of composites, spring clutches, advanced high hot hardness gear steels, the split path configuration itself, high reduction ratio, double helical gearing on the output stage, elastomeric load sharing devices, and elimination of accessory drives ... Transmissions, Gears, Bearings, Helicopters.

Preliminary Design and Analysis of an Advanced Rotorcraft Transmission

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Preliminary Design and Analysis of an Advanced Rotorcraft Transmission by : Z. S. Henry

Download or read book Preliminary Design and Analysis of an Advanced Rotorcraft Transmission written by Z. S. Henry and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

92-3335 - 92-3364

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ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis 92-3335 - 92-3364 by :

Download or read book 92-3335 - 92-3364 written by and published by . This book was released on 1992 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Rotorcraft Transmission (ART)

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Advanced Rotorcraft Transmission (ART) by : Z. S. Henry

Download or read book Advanced Rotorcraft Transmission (ART) written by Z. S. Henry and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bell Helicopter Advanced Rotocraft Transmission (ART) Program

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ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Bell Helicopter Advanced Rotocraft Transmission (ART) Program by :

Download or read book Bell Helicopter Advanced Rotocraft Transmission (ART) Program written by and published by . This book was released on 1995 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: