The NASA Dryden AAR Project: A Flight Test Approach to an Aerial Refueling System

Hansen, Jennifer L.; Murray, James E.; Campos, Norma

doi:10.2514/6.2004-4939

Cited by 62 publications

(47 citation statements)

References 5 publications

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“…Work is ongoing to assess the accuracy of DGPS-derived relative position using optical techniques. 23 Additionally, CFD numeric dissipation can be responsible for shock location offsets. In Fig.…”

Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Airborne Shaped Sonic Boom Demonstration Pressure Measurements with Computational Fluid Dynamics Comparisons

Haering

Murray

Purifoy

et al. 2005

43rd AIAA Aerospace Sciences Meeting and Exhibit

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The Shaped Sonic Boom Demonstration project showed for the first time that by careful design of aircraft contour the resultant sonic boom can maintain a tailored shape, propagating through a real atmosphere down to ground level. In order to assess the propagation characteristics of the shaped sonic boom and to validate computational fluid dynamics codes, airborne measurements were taken of the pressure signatures in the near field by probing with an instrumented F-15B aircraft, and in the far field by overflying an instrumented L-23 sailplane. This paper describes each aircraft and their instrumentation systems, the airdata calibration, analysis of the near-and far-field airborne data, and shows the good to excellent agreement between computational fluid dynamics solutions and flight data. The flights of the Shaped Sonic Boom Demonstration aircraft occurred in two phases. Instrumentation problems were encountered during the first phase, and corrections and improvements were made to the instrumentation system for the second phase, which are documented in the paper. Piloting technique and observations are also given. These airborne measurements of the Shaped Sonic Boom Demonstration aircraft are a unique and important database that will be used to validate design tools for a new generation of quiet supersonic aircraft.* Note that the use of trade names or names of manufacturers in this document does not constitute an official endorsement of such products or manufacturers, either express or implied, by the National Aeronautics and Space Administration.† This material is declared a work of the U.S. Government and is not subject to copyright protection in

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Section: Computational Fluid Dynamicsmentioning

confidence: 99%

Airborne Shaped Sonic Boom Demonstration Pressure Measurements with Computational Fluid Dynamics Comparisons

Haering

Murray

Purifoy

et al. 2005

43rd AIAA Aerospace Sciences Meeting and Exhibit

Self Cite

View full text Add to dashboard Cite

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“…In the case of aerial refueling, fuel transferred to the receiver aircraft brings in momentum and changes its inertia properties. Previous works [45,7,46,47,48,49,50,51,1,52] in aerial refueling either ignore the effect of mass transfer or treat it as disturbance causing parametric uncertainty [7]. In this work, the equations of motion for the receiver are derived considering the system of the receiver aircraft and the fuel before and after being transferred into the receiver.…”

Section: Introductionmentioning

confidence: 99%

Derivation of the Dynamics Equations of Receiver Aircraft in Aerial Refueling

Waishek

Dogan

Blake

2009

Journal of Guidance, Control, and Dynamics

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“…Aerial refueling, defined as the operation of in-flight fuel transmission from the tanker aircraft to the receiver aircraft, provides an effective solution to expand the limited flying distance of the aircraft, and is widely used in military area [1][2][3]. For unmanned aerial vehicles (UAV), autonomous aerial refueling (AAR) can greatly improve the UAV's performance through extending the UAV's flight duration [4].…”

Section: Introductionmentioning

confidence: 99%

Monocular Vision Navigation Sensor for Autonomous Aerial Refueling

Huang¹,

Sun²,

Ling³

et al. 2017

Preprint

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Autonomous aerial refueling technology is an effective solution to extend flight duration of unmanned aerial vehicles, and also a great challenge due to its high risk. For autonomous probeand-drogue refueling tasks, relative navigation to provide relative position between the receiver aircraft and the refueling drogue is the first and essential step, and vision-based method is the most frequently used. A new monocular vision navigation sensor with image processing strategy consisting of the drogue detection method and the tracking method is developed for autonomous aerial refueling in this paper. In the drogue detection method, thresholding and mathematical morphology method are adopted to eliminate image interference, and contours extraction method is applied to obtain all contours, which are then subsequently checked to achieve target contour of drogue. In the tracking method, a rectangle of interest (ROI) of current frame image is determined by positioning results of last frame, and then processed by the previous drogue detection method. Finally, the proposed image processing strategy in monocular vision navigation sensor is validated using real flight images, which are captured from an autonomous aerial refueling testbed using a micro six-rotor aircraft as receiver aircraft.

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The NASA Dryden AAR Project: A Flight Test Approach to an Aerial Refueling System

Cited by 62 publications

References 5 publications

Airborne Shaped Sonic Boom Demonstration Pressure Measurements with Computational Fluid Dynamics Comparisons

Airborne Shaped Sonic Boom Demonstration Pressure Measurements with Computational Fluid Dynamics Comparisons

Derivation of the Dynamics Equations of Receiver Aircraft in Aerial Refueling

Monocular Vision Navigation Sensor for Autonomous Aerial Refueling

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