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Vehicular Measurements of Effective Runway Friction

Vehicular Measurements of Effective Runway Friction
Author: Jack J. Shrager
Publisher:
Total Pages: 90
Release: 1962
Genre: Airplanes
ISBN:

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Tests were conducted to determine the relationship of friction measurements, as computed from full-scale jet aircraft braking tests, to measurements obtained with special ground vehicular equipment on an operational runway under simulated adverse weather conditions. Results indicated that it may be possible to employ special vehicular equipment to obtain operational runway surface friction which can be related to the maximum energy braking effectiveness for a full-scale jet aircraft. (Author).


Overview of the Joint Winter Runway Friction Measurement Program

Overview of the Joint Winter Runway Friction Measurement Program
Author: Joint Winter Runway Friction Measurement Program
Publisher: Centre de développement des transports
Total Pages: 32
Release: 2004
Genre: Airplanes
ISBN:

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The Joint Winter Runway Friction Measurement Program was created in 1996 to undertake a five-year initiative to study winter runway friction measurements. This report reviews the history of the Program and its activities in friction research, field tests of friction measurement methods & aircraft braking performance, and development of the Canadian & International Runway Friction Indexes. The last section outlines future goals and challenges to implementation of a world-wide standard runway friction index.


Tire-to-surface Friction-coefficient Measurements with a C-123B Airplane on Various Runway Surfaces

Tire-to-surface Friction-coefficient Measurements with a C-123B Airplane on Various Runway Surfaces
Author: Richard H. Sawyer
Publisher:
Total Pages: 40
Release: 1959
Genre: Airplanes
ISBN:

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An investigation was conducted to obtain information on the tire-to-surface friction coefficients available in aircraft braking during the landing run. The tests were made with a C-123B airplane on both wet and dry concrete and bituminous pavements and on snow-covered and ice surfaces at speeds from 12 to 115 knots. Measurements were made of the maximum (incipient skidding) friction coefficient, the full-skidding (locked wheel) friction coefficient, and the wheel slip ratio during braking.


Aircraft and Ground Vehicle Winter Runway Friction Assessment

Aircraft and Ground Vehicle Winter Runway Friction Assessment
Author: Thomas J. Yager
Publisher:
Total Pages: 18
Release: 1999
Genre: Airplanes
ISBN:

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Some background information is given together with the scope and objectives of a 5-year, Joint Winter Runway Friction Measurement Program between the National Aeronautics & Space Adminstration (NASA), Transport Canada (TC), and the Federal Aviation Administration (FAA). The primary objective of this effort is to perform instrumental aircraft and ground vehicle tests aimed at identifying a common number that all the different ground vehicle devices would report. This number, denoted the International Runway Friction Index (IRFI), will be related to all types of aircraft stopping performance. The range of test equipment, the test sites, test results and accomplishments, the extent of the substantial friction database compiled, and future test plans will be described. Several related studies have also been implemented including the effects of contaminant type on aircraft impingement drag, and the effectiveness of various runway and aircraft de-icing chemical types, and application rates.