Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control
The results of this research indicate that continuous, variable rotor speed control is a viable solution to increased helicopter maneuverability and agility. Of the rotor speed control laws investigated, the RCDR and T (RC) types seem the most promising. In particular, these control laws demons...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-418162020-09-11T05:30:17Z Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control Schaefer, Carl George Systems Engineering Lutse, Fred H. Jr. Blanchard, Benjamin S. Jr. Trani, Antonio A. Deisenroth, Michael P. Military helicopters. LD5655.V851 1990.S352 The results of this research indicate that continuous, variable rotor speed control is a viable solution to increased helicopter maneuverability and agility. Of the rotor speed control laws investigated, the RCDR and T (RC) types seem the most promising. In particular, these control laws demonstrated a 31% improvement in time-to-turn 180 degrees, a 38% improvement in turn penetration distance, a 42% improvement in turn cross track distance, and a pointing margin advantage of nearly 94 degrees. In addition, the rotor speed control law parameters could be optimized such that the helicopter exited a maximum performance decelerating turn at or above its power bucket speed, affording the helicopter a distinct maneuvering advantage. It was also shown that different rotor speed control laws would most likely be required for the air combat and ground attack mission scenarios. The author feels that successful variable rotor speed control can be achieved through an appropriate marriage of FADEC engine control and high performance flight control systems. But numerous questions remain relative to the successful integration of this technology to existing and/or future helicopter designs, (addressed in the Recommendations for Future Research section). Nevertheless, this technology shows considerable promise and it is hoped that this study will be a stepping stone to future investigations in this area. Master of Engineering 2014-03-14T21:32:29Z 2014-03-14T21:32:29Z 1990 2010-03-30 2010-03-30 2010-03-30 Master's project etd-03302010-020156 http://hdl.handle.net/10919/41816 http://scholar.lib.vt.edu/theses/available/etd-03302010-020156/ LD5655.V851_1990.S352.pdf BTD application/pdf Virginia Tech |
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Dissertation |
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Military helicopters. LD5655.V851 1990.S352 |
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Military helicopters. LD5655.V851 1990.S352 Schaefer, Carl George Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
description |
The results of this research indicate that continuous,
variable rotor speed control is a viable solution to
increased helicopter maneuverability and agility. Of the
rotor speed control laws investigated, the RCDR and T (RC)
types seem the most promising. In particular, these control
laws demonstrated a 31% improvement in time-to-turn 180
degrees, a 38% improvement in turn penetration distance, a
42% improvement in turn cross track distance, and a pointing
margin advantage of nearly 94 degrees. In addition, the
rotor speed control law parameters could be optimized such
that the helicopter exited a maximum performance decelerating
turn at or above its power bucket speed, affording the
helicopter a distinct maneuvering advantage. It was also
shown that different rotor speed control laws would most
likely be required for the air combat and ground attack
mission scenarios.
The author feels that successful variable rotor speed
control can be achieved through an appropriate marriage of
FADEC engine control and high performance flight control
systems. But numerous questions remain relative to the
successful integration of this technology to existing and/or
future helicopter designs, (addressed in the Recommendations
for Future Research section). Nevertheless, this technology
shows considerable promise and it is hoped that this study
will be a stepping stone to future investigations in this
area. === Master of Engineering |
author2 |
Systems Engineering |
author_facet |
Systems Engineering Schaefer, Carl George |
author |
Schaefer, Carl George |
author_sort |
Schaefer, Carl George |
title |
Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
title_short |
Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
title_full |
Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
title_fullStr |
Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
title_full_unstemmed |
Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
title_sort |
enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control |
publisher |
Virginia Tech |
publishDate |
2014 |
url |
http://hdl.handle.net/10919/41816 http://scholar.lib.vt.edu/theses/available/etd-03302010-020156/ |
work_keys_str_mv |
AT schaefercarlgeorge enhancedenergymaneuverabilityforattackhelicoptersusingcontinuousvariablerotorspeedcontrol |
_version_ |
1719339949454524416 |