Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter.
Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.
OCR for page 47
47
VII. RELATED RESEARCH general aviation aircraft. This project would support
See ACRP 02-03 report. We are aware of some limited HAP emissions measurements of general aviation
work in progress through the FAA/Partner research aircraft such as those employing piston engines, turbo-
program. The product of that research we know of is jet engines, and low-bypass turbofan engines (such as
an assessment of the impact of reduced thrust take-off business jets). This information will be most impor-
on NOx emissions. We are unaware of an effort to tant at general aviation airports.
apply real-world thrust profiles to the hazardous air
pollutant emissions. IV. RESEARCH PROPOSED
This project would measure the emission rates of
VIII. PERSON(S) DEVELOPING THE PROBLEM various HAPs compounds from general aviation air-
ACRP Project 02-03, PI: David Nelson craft. The project should quantify HAP emissions
(ddn@aerodyne.com, 978-663-9500). from a wide variety of in-service general aviation air-
craft. It will be important to make measurements as
IX. PROCESS USED TO DEVELOP PROBLEM a function of engine type and operational mode (idle,
STATEMENT taxi, take-off). It is envisioned that this will require
ACRP Project 02-03 making measurements at more than one airport. It is
essential that the engine type and operational mode
X. DATE AND SUBMITTED BY be determined during these measurements to allow
ACRP Project 02-03, December 20, 2007, PI: David these measurement results to be incorporated in
Nelson (ddn@aerodyne.com, 978-663-9500). models that airport operators can use to estimate
their emissions.
9.3 HAP Emissions from General
Aviation Aircraft V. ESTIMATE OF THE PROBLEM FUNDING
AND RESEARCH PERIOD
AIRPORT COOPERATIVE RESEARCH Recommended Funding: $400,000 to $500,000
PROGRAM PROBLEM STATEMENT Research Period: 18 to 24 months
I. PROBLEM TITLE
VI. URGENCY AND PAYOFF POTENTIAL
HAP emissions from general aviation aircraft
This research will provide much needed measure-
ments of HAP emission from in-service general
II. RESEARCH PROBLEM STATEMENT
aviation aircraft.
Frequently, general aviation airport operators are
The results of this research will be used to produce
asked to estimate the magnitude of toxic emissions
more accurate emissions estimates for general avia-
from airport-related sources. These requests may come
tion aircraft. These estimates will be more defensible
from government officials, courts, or concerned com-
and better able to withstand litigation since they will
munity groups. One of the key categories of potentially
be based on the latest scientific findings regarding
toxic emissions is Hazardous Air Pollutant (HAP)
HAP emissions from general aviation aircraft.
emissions. HAP emission from general aviation air-
craft are currently difficult to estimate because they
VII. RELATED RESEARCH
have not been well studied and because there is no
See ACRP 02-03 report.
engine emission certification requirement for most
general aviation aircraft. This is due to the relatively
small size of their engines. Hence, HAP emissions (with VIII. PERSON(S) DEVELOPING THE PROBLEM
the exception of lead) from aircraft piston engines, ACRP Project 02-03, PI: David Nelson
turbojet engines, and low-bypass turbofan engines (ddn@aerodyne.com, 978-663-9500).
(such as business jets) are largely unknown and should
be quantified. In order to properly estimate airport IX. PROCESS USED TO DEVELOP PROBLEM
HAP emissions from general aviation aircraft it is nec- STATEMENT
essary to study these emissions with in-service aircraft. ACRP Project 02-03
III. OBJECTIVE X. DATE AND SUBMITTED BY
The goal of this project would be to improve our ACRP Project 02-03, December 20, 2007, PI: David
quantitative understanding of HAP emissions from Nelson (ddn@aerodyne.com, 978-663-9500).
