| タイトル | Converting a C-130 Hercules into a Compound Helicopter: A Conceptual Design Study |
| 本文（外部サイト） | http://hdl.handle.net/2060/20130011015 |
| 著者（英） | Kottapalli, Anjaney P.; Harris, Franklin D. |
| 著者所属（英） | Massachusetts Inst. of Tech. |
| 発行日 | 2012-01-20 |
| 言語 | eng |
| 内容記述 | Currently, the US Military and NASA are investigating the feasibility of a Vertical/Short Take Off and Landing (VSTOL) aircraft that can provide invaluable aid in the combat theater and significantly improve the civil transportation system. The nominal military mission requirement calls for a 28-ton payload heavy lift capability while the civilian requirements calls for a 90-passenger, 1000-nm range, airliner, as noted in Reference 1. To aid in these aircraft requirements, the present study examined the conversion of a Lockheed Martin C-130 Hercules into a compound aircraft, which would demonstrate the technology required by a much larger version. The present study examined various configurations and rotor blade designs in order to fulfill the nominal mission described previously. It was shown that the initial design of a 180 ft diameter rotor to lift 155,000 lb was not feasible due to material constraints. A revised design, in which the rotor radius was reduced to 55 ft, met the given constraints but required too much power. The decision was made to move to a twin rotor compound to take advantage of the increased disc area and drop the need for anti torque devices. Following this design shift, a new design point was found where all five constraints were met and the power requirements were deemed reasonable. This twin-rotor design was used in NDARC to provide a complete sizing analysis of the chosen design point. |
| NASA分類 | Aircraft Design, Testing and Performance |
| レポートNO | ARC-E-DAA-TN728 |
| 権利 | Copyright, Distribution under U.S. Government purpose rights |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/238794 |
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