Liquid Water Content and Droplet Size Calibration of the NASA Lewis Icing Research Tunnel PDF Download
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Author:
Publisher: DIANE Publishing
ISBN: 1428916792
Category :
Languages : en
Pages : 30
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428916792
Category :
Languages : en
Pages : 30
Get Book Here
Book Description
Author: Robert F. Ide
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 26
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Book Description
Author: Robert F. Ide
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
The icing research tunnel at the NASA Glenn Research Center underwent a major rehabilitation in 1999, necessitating recalibration of the icing clouds. This report describes the methods used in the recalibration, including the procedure used to establish a uniform icing cloud and the use of a standard icing blade technique for measurement of liquid water content. The instruments and methods used to perform the droplet size calibration are also described. The liquid water content/droplet size operating envelopes of the icing tunnel are shown for a range of airspeeds and compared to the FAA icing certification criteria. The capabilities of the IRT to produce large droplet icing clouds is also detailed.
Author: Judith Foss VanZante
Publisher: BiblioGov
ISBN: 9781289044572
Category :
Languages : en
Pages : 56
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Book Description
In 2011, NASA Glenn s Icing Research Tunnel underwent a major modification to it s refrigeration plant and heat exchanger. This paper presents the results of the subsequent full cloud calibration. Details of the calibration procedure and results are presented herein. The steps include developing a nozzle transfer map, establishing a uniform cloud, conducting a drop sizing calibration and finally a liquid water content calibration. The goal of the calibration is to develop a uniform cloud, and to build a transfer map from the inputs of air speed, spray bar atomizing air pressure and water pressure to the output of median volumetric droplet diameter and liquid water content.
Author: Andrew L. Reehorst
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 14
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Book Description
Author: Robert F. Ide
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 12
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Book Description
In order to improve icing cloud uniformity, changes were made to the tunnel at the NASA Glenn Research Center in the vicinity of the spray bars. These changes necessitated a complete recalibration of the icing clouds. This report describes the methods used in the recalibration, including the procedure used to optimize the uniformity of the icing cloud and the use of a standard icing blade technique for measurement of liquid water content. The instruments and methods used to perform the droplet size calibration are also described. The liquid water content/droplet size operating envelopes of the icing tunnel are shown for a range of airspeeds and compared to the FAA icing certification criteria.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 996
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Book Description
This manual describes the Icing Research Tunnel (IRT) at the NASA Lewis Research Center and provides information for users who wish to conduct experiments in this facility. The capabilities of the tunnel test section, main drive system, speed control system, and spray bars are described. Tunnel performance maps of liquid water content as a function of median volume droplet size is presented for two types of spray nozzles at test-section velocities ranging from 86.8 to 303.9 kn (100 to 350 mph). The facility support systems, which include heated air systems, steam and service air systems, an altitude exhaust system, a force balance system, and the model electrical power system, are described. Also discussed are facility instrumentation capabilities for temperature and pressure measurements and model attitude simulation. In addition, photographic documentation and flow visualization techniques are explained, and pretest meeting formats and schedules are outlined. Tunnel-user responsibilities, personnel safety requirements, and types of test agreements are explained. The IRT is a closed-return atmospheric tunnel with a test section that is 6 ft high, 9 ft wide, and 20 ft long. It is equipped to support testing at airspeeds up to 303.9 kn (350 mph) with a 5.0-percent blockage model in the test section in a temperature and water-droplet environment that simulates natural icing conditions.
