Interaction of spray aircraft wake with convective surface winds in hilly terrain

136 Pages·1996·4.9 MB·English

by  Bilanin, Alan J

Historic, Archive Document
Do not assume content reflects current
scientific knowledge, policies, or practices.
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Pench INTERACTION OF SPRAY
United States
al AIRCRAFT WAKE WITH
pee eee CONVECTIVE SURFACE WINDS
Forest Health IN HILLY TERRAIN
Protection
Forest Health
Technology
Enterprise Team-
Davis
2121C Second Street
Davis, CA 95616
FHTET 96-26
October 1996
Pesticides used improperly can be injurious to human beings, animals,
and plants. Follow the directions and heed all precautions on labels. Store
pesticides in original containers under lock and key—out oft he reach ofch ildren
and-animals—and away from food and feed.
Apply pesticides so that they do not endanger humans, livestock, crops,
beneficial insects, fish, and wildlife. Do not apply pesticides where there is
danger of drift when honey bees or other pollinating insects are visiting plants,
or in ways that may contaminate water or leave illegal residues.
Avoid prolonged inhalation of pesticide sprays or dusts; wear protective
clothing and equipment, if specified on the label.
If your hands become contaminated with a pesticide, do not eat or drink
until you have washed. In case a pesticide is swallowed or gets in the eyes,
follow the first aid treatment given on the label, and get prompt medical
attention. If a pesticide is spilled on your skin or clothing, remove clothing
immediateiy and wash skin thoroughly.
i
NOTE: Some States have restrictions on the use of CAUTION:
certain pesticides. Check your State and local regula- PESTICIDES|
tions. Also, because registrations of pesticides are under
constant review by the U.S Environmental Protection
Agency, consult your local forest pathologist, county
agriculture agent, or State extension specialist to be sure
the intended use is still registered.
Cover Photo
Vertical towers for characterization of aircraft
wake during rlights. Balloon is a tethersonde for
wea-her measurements. Program WIND, Paynes Creek,
Gree. OS D2 _raotog-aph by Jnr Sarzy.
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FHTET 96-26
(C.D.I. Technical Note 86-05)
October ae
INTERACTION OF SPRAY
AIRCRAFT. WAKE WITH
CONVECTIVE SURFACE WINDS
IN HILLY TERRAIN
Prepared by:
A. J. Bilanin
M..E. Teske
R. G. Geyer
Continuum Dynamics, Inc.
P.O. Box 3073
Princeton, NJ 08543
Contract No. 53-0343-1-00153
Prepared for:
USDA Forest Service
Missoula Technology
Development Center
Ft. Missoula, MT 69801
Davis, CA 95616
Robert Ekblad
Project Officer
John W. Barry
Program Manager
Program Wind
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FOREWORD
Program WIND (Winds In Non-uniform Domains) was a joint meteorological research
effort by the U.S. Department of Agriculture Forest Service, the U.S. Army
Dugway Proving Ground and the U.S. Army Atmospheric Sciences [ober ateey. Field
studies .were conducted in northern California during 1985 and 1987 to collect
data for meteorological and spray dispersion model development and evaluation.
As part of Program WIND, cooperation between the Forest Service and Dugway
Proving Ground resulted in the advancement of the FSCBG (Forest Service,
Cramer, Barry, and Grim) aerial spray deposition, drift and dispersion model
from a research tool to an operational model. The work described in this
report was sponsored by the Forest Service as part of the Program WIND
cooperative effort.
Bob Ekblad, Project Officér, John Barry, Program Manager, and the authors, A.J.
Bilanin, M.E. Teske and R.G. Geyer gratefully acknowledge our debt to the many
who made the project possible and successful. The success of a large ongoing
cooperative field study such as Program WIND depends on teamwork. Deserving
special mention are: Dave Burham of the Transportation Systems Center of the
Department of transportation for sharing his past experience in wake-vortex
measurements and also providing the anemometers used in this project; Don.
Lassila for his assistance in our tower set-up and breakdown and manning the
vertical camera; Jim Keetch, Bob Thomas and the rest of the Lockheed Corp.
(Utah) crew for their assistance and loaning of the batteries and portable
generator; the Forest Service employees who delivered our equipment to the
Chico Tree Improvement Center; Jack Kennedy at the Mendocino National Forest
Chico (CA) Tree Improvement Center for use of his storage space for our
equipment; Jim Boyd of the Forest Service Missoula Technology Development
Center for operating the cameras and helping wherever needed; and Bob Ekblad
andewonn, Barry "ob thesForest Service for both their on-site assistance and
valuable guidance throughout the aircraft wake project.
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TABLE OF CONTENTS
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INTRODUCTION
1.1 Background
1.2 Program Description
1.3 Data Reduction Procedures
1.4 Conclusions and Recommendations
TEST EQUIPMENT AND FACILITIES
2-1 Test Aircraft
Zetmelestoice
TEST INSTRUMENTATION
3.1 Anemometer Towers
3.2 Anemometers
3.3 Data Acquisition System
3.4 Aircraft Altitude Measurement
CAs Aircraft Ground Speed and Measurement
3.6 Ambient Wind and Temperature Profiles
TEST PROCEDURE
TEST MATRIX
UVW DATA REDUCTION
TOWER GRID DATA REDUCTION
7.°1 Flow Field Model
7.2 Preliminary Results
REFERENCES
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