Language selection

Government of Canada / Gouvernement du Canada

Search

An improved theoretical model for the ground distribution of water released from a fire-bomber

Download
  1. (PDF, 7.5 MiB)
DOIResolve DOI: https://doi.org/10.4224/40003945
AuthorSearch for: 1
Affiliation
  1. National Research Council Canada. National Aeronautical Establishment
FormatText, Technical Report
Physical description46 p.
Abstract
Equations based on aircraft speed and altitude, tank geometry, and certain parameters of the erosion process are given for the discharge from the tanks, the erosion into droplets, and the resulting distribution on the ground of water released from a fire-bomber. A development of a previous theoretical model that displayed some weaknesses, the present model includes more realistic door-opening and discharge times and incorporates an erosion process in which the volume rate of production of droplets is dependent, not only on the area of bulk water exposed to the airstream, but also on the distance below the aircraft. Predicted solutions are matched to experimental data from tests of three aircraft, to numerically define proportionality factors used in the model. Equations are developed to estimate the width of the wetted area and to produce idealized contour patterns. The theoretical model is applicable to aircraft making drops between 75 and 110 knots at heights from 50 to 100 feet above the ground.
Publication date
PublisherNational Research Council Canada
Series
  • Laboratory Report (National Research Council Canada. National Aeronautical Establishment), no. LR-498 (February 1968).
LanguageEnglish
Peer reviewedNo
NRC numberNRCC 10202
FRL-1968-0001
NPARC number8927260
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifier635047d0-e1b1-4570-b3a3-31d6f10b7f36
Record created2009-04-23
Record modified2026-02-20

Page details

From:

Date modified: