Presents a simplified method of designing ducted fans for light aircraft propulsion.
Author: F. Marc de Piolenc
Publisher: Marc de Piolenc
Presents a simplified method of designing ducted fans for light aircraft propulsion. Includes a survey of ducted-fan-powered aircraft, ranging from amateur-built airplanes to military models and prototypes. Detailed discussion of engines and list of suitable powerplants drawn from automobiles, ATVs and personal watercraft. Extensive technical bibliography and list of sources.
 P.F. de Marc, G.E. Wright Jr., Ducted Fan Design: Volume 1 - Propulsion Physics and Design of Fans and Long-Chord Ducts, CreateSpace Independent Publishing, 2015 October 30.  W. Krueger, On Wind Tunnel Tests and Computations ...
Author: Snorri Gudmundsson
Category: Business & Economics
General Aviation Aircraft Design, Second Edition, continues to be the engineer’s best source for answers to realistic aircraft design questions. The book has been expanded to provide design guidance for additional classes of aircraft, including seaplanes, biplanes, UAS, high-speed business jets, and electric airplanes. In addition to conventional powerplants, design guidance for battery systems, electric motors, and complete electric powertrains is offered. The second edition contains new chapters: Thrust Modeling for Gas Turbines Longitudinal Stability and Control Lateral and Directional Stability and Control These new chapters offer multiple practical methods to simplify the estimation of stability derivatives and introduce hinge moments and basic control system design. Furthermore, all chapters have been reorganized and feature updated material with additional analysis methods. This edition also provides an introduction to design optimization using a wing optimization as an example for the beginner. Written by an engineer with more than 25 years of design experience, professional engineers, aircraft designers, aerodynamicists, structural analysts, performance analysts, researchers, and aerospace engineering students will value the book as the classic go-to for aircraft design. The printed book is now in color, with 1011 figures and illustrations! Presents the most common methods for conceptual aircraft design Clear presentation splits text into shaded regions, separating engineering topics from mathematical derivations and examples Design topics range from the "new" 14 CFR Part 23 to analysis of ducted fans. All chapters feature updated material with additional analysis methods. Many chapters have been reorganized for further help. Introduction to design optimization is provided using a wing optimization as an example for the beginner Three new chapters are offered, two of which focus on stability and control. These offer multiple practical methods to simplify the estimation of stability derivatives. The chapters introduce hinge moments and basic control system design Real-world examples using aircraft such as the Cirrus SR-22 and Learjet 45
In addition, air duct or pipe system design should be considered. Designers should pay attention to: ! space availability, ! space air diffusion, ! noise levels, ! air distribution system (duct and equipment), ! duct heat gains and ...
Author: Howard D. Goodfellow
Publisher: Academic Press
Category: Technology & Engineering
The fully revised and restructured two-volume 2nd edition of the Industrial Ventilation Design Guidebook develops a systematic approach to the engineering design of industrial ventilation systems and provides engineers guidance on how to implement this state-of-the-art ventilation technology on a global basis. Volume 1: Fundamentals features the latest research technology in the broad field of ventilation for contaminant control including extensive updates of the foundational chapters from the previous edition. With major contributions by experts from Asia, Europe and North America in the global industrial ventilation field, this new edition is a valuable reference for consulting engineers working in the design of air pollution and sustainability for their industrial clients (processing and manufacturing), as well as mechanical, process and plant engineers looking for design methodologies and advice on sensors and control algorithms for specific industrial operations so they can meet challenging targets in the low carbon economy. Presents practical designs for different types of industrial systems including descriptions and new designs for ducted systems Discusses the basic processes of air and containment movements such as jets, plumes, and boundary flows inside ventilated spaces Introduces the new concept of target levels in the systematic design methodology such as assessing target levels for key parameters of industrial air technology and the hierarchy of different target levels Provides future directions and opportunities in the industrial design field
<Thermod> bypass engine Zweikreistriebwerk n 1. <Lufttrans> ducted-fan engine; 2. <Thermod> turbofan engine Zweikreisverstärker m <Elektronik> double-tuned amplifier Zweikreiszündanlage f <Kfztech> two-circuit ignition system ...
Author: Robert Dimand
Category: Foreign Language Study
Since its publication in 1995, the German Technical Dictionary has established itself as the definitive resource for anyone who needs to translate technical documents between German and English. This new edition has been substantially revised to reflect the technological environment of the twenty-first century. The revised edition contains over 75,000 entries, of which over 5,000 are new, with many new entries in the areas of: * the Internet and telecommunications * bio-technology and the new genetics * new developments in health technology. Throughout, this dictionary continues to benefit from the features that made the first edition so valuable, including accurate translations in British and American English and an attractive, durable and easy to use layout.
SE EXPOSURE PORECASTS / LAND USE PLANNING PAN DUCT WALLS / ACOUSTIC IMPEDANCE 1 ) 16983 PREHENSIVE PLANNING AND ... OF AIR TRANS PORTATION AND THE RONMENTAL IMPACT PROBLEM FAN ENGINE DESIGN 11 018701 SOME THOUGHTS ON ENGINE DEVELOPMENT ...
Fan blade design techniques can be coupled with this work , for optimized design of a ducted fan system . Acknowledgments This research has been ... 1 , URL : http://www89.pair.com/techinfo/MassFlow/ductbook.htm ( cited 4 April 2004 ) .
... 1968 p 1 - 396 ( AD - 695929 ; FTD - MT - 24-135-69 - Vol - 1 ) Avail : CFSTI CSCL 21 / 8.1 The book presents design ... computer program developed previously for predicting the performance of a ducted fan in a uniform axial flow .
Contracts were awarded to GE to design , build , and test two types of high - bypass fanjet engines : an over - the ... advanced composite construction for the inlet , fan frame , and fan exhaust duct ; and a new digital control system ...
... a joined aircraft configuration design contest . Volume 1 ( microform ] final report . ... Ducted fan acoustic radiation including the effects of nonuniform mean flow and acoustic treatment ( microform ) / Eversman , Walter ...
One result is pressure on engineers to replace standard heat sinks with optimized, higher performance designs. Optimized heat sinks offer more performance with less weight, in a smaller spatial volume, than an off the shelf designs.
AD - 649 999 51 U67 11 HCS 3.00 MFS 0.65 AIRFOIL NOTES ON DUCTED FAN DESIGN . ... VOLUME 1 . AD - 650 201 176 167 11 HCS 3.00 MFS 0.65 AIRPLANE NOISE , URBAN AREAS COMPATIBLE LAND USE PLANNING ON AND AROUND AIRPORTS .
Volume 1 : Structural Dynamics p aerodynamic tools for the analysis of rotors at transon379-392 . ... May 88 , 12p In NASA , Lewis Research Center , Lewis Structures Lewis supersonic through - flow fan design .
Author: Gerry E. Hendershot
Category: Birth control
The 1982 statistics on the use of family planning and infertility services presented in this report are preliminary results from Cycle III of the National Survey of Family Growth (NSFG), conducted by the National Center for Health Statistics. Data were collected through personal interviews with a multistage area probability sample of 7969 women aged 15-44. A detailed series of questions was asked to obtain relatively complete estimates of the extent and type of family planning services received. Statistics on family planning services are limited to women who were able to conceive 3 years before the interview date. Overall, 79% of currently mrried nonsterile women reported using some type of family planning service during the previous 3 years. There were no statistically significant differences between white (79%), black (75%) or Hispanic (77%) wives, or between the 2 income groups. The 1982 survey questions were more comprehensive than those of earlier cycles of the survey. The annual rate of visits for family planning services in 1982 was 1077 visits /1000 women. Teenagers had the highest annual visit rate (1581/1000) of any age group for all sources of family planning services combined. Visit rates declined sharply with age from 1447 at ages 15-24 to 479 at ages 35-44. Similar declines with age also were found in the visit rates for white and black women separately. Nevertheless, the annual visit rate for black women (1334/1000) was significantly higher than that for white women (1033). The highest overall visit rate was for black women 15-19 years of age (1867/1000). Nearly 2/3 of all family planning visits were to private medical sources. Teenagers of all races had higher family planning service visit rates to clinics than to private medical sources, as did black women age 15-24. White women age 20 and older had higher visit rates to private medical services than to clinics. Never married women had higher visit rates to clinics than currently or formerly married women. Data were also collected in 1982 on use of medical services for infertility by women who had difficulty in conceiving or carrying a pregnancy to term. About 1 million ever married women had 1 or more infertility visits in the 12 months before the interview. During the 3 years before interview, about 1.9 million women had infertility visits. For all ever married women, as well as for white and black women separately, infertility services were more likely to be secured from private medical sources than from clinics. The survey design, reliability of the estimates and the terms used are explained in the technical notes.
Release on 1961 | by United States. Federal Aviation Agency
The propulsion system is a non - concentric turbofan design , two J60's mounted above paired fans . The fan drive turbine ... edge of the duct . Figure 170 All available data is included in text , Book 1 , Section II , Parts 1 and 2 .
Elliot , D.M. and Dittmar , J.H. , " Some Acoustic Results from the Pratt and Whitney Advanced Ducted Propulsor Model ... Control of Fan Noise Feasibility Study , Volume 1 : Flyover System Noise Studies , " NASA / CR 195392 , 1994 . 28.
Release on 1965 | by United States. National Aeronautics and Space Administration
Automotive Engrs . , 2. Maestrello , L .: The Design and Evaluation of an Aerodynamic Inlet Noise Suppressor . Doc . No. 06-5980 , Boeing Airplane Co. , Dec. 12 , 1960 . 3. Prindle , J. H .: Whine Noise in Fan Ducts . Doc . No.
Author: United States. National Aeronautics and Space Administration