Insect flight

This review considers factors affecting the flight capacity of carabid beetles and the implications of flight for carabids. Studies from the Dutch polders in particular show that young populations of carabids consist predominantly of macropterous species and macropterous individuals of wing-dimorphic species. Also populations of wing-dimorphic carabid species at the periphery of their geographical range contain high proportions of macropterous individuals. However, studies from Baltic archipelagos show that older populations of even highly isolated island habitats contain considerable proportions of brachypterous species and individuals. This suggests that macroptery is primarily an adaptation for dispersal and that there exists a mechanism for subsequently reducing the ratio of macropterous to brachypterous species under stable conditions, due to the competitive advantage
of brachyptery. Populations in isolated habitats, such as islands and mountains, have high proportions of brachypterous species. Many macropterous species do not possess functional flight muscles. Species of unstable habitats, such as tree canopies and wet habitats, are mostly macropterous. Brachypterous species tend to disappear from disturbed habitats. There is uncertainty regarding the extent to which carabid dispersal is directed and how much passive. Both Den Boer and Lindroth recognized that mostly macropterous individuals of macropterous and wing-dimorphic species disperse and found new populations, after which brachyptery tends to rapidly appear and proliferate in the newly founded population. It is most likely that the allele for brachyptery would
arrive via the dispersal of gravid females which had mated with brachypterous males prior to emigration. Whilst many studies consider wing morphology traits of carabid beetles to be species-specific and permanent, a number of studies have shown that the oogenesis flight syndrome, whereby females undertake migration and subsequently lose their flight muscles by histolysis before eventually regenerating them after reproducing, has been reported for a growing number of carabid species. Wing morphology of carabid beetles clearly offers strong potential for the study of population dynamics. This field of study flourished during the 1940’s to the late 1980’s. Whilst a considerable amount of valuable research has been performed and published, the topic clearly holds considerable potential for future study.

Bibliographies are lists which convey idenfication information of different publications like books,
papers and articles on specific subjects in a certain order. They are prepared with the intention to provide
those who conduct studies in a certain field with the related source material in its entirety. They make it
possible to quickly review previous work on the subject being studied. They also provide an opportunity to
make more realistic, effective and less time consuming plans in reaching the target.
The first comprehensive bibliography on entomology and agricultural zoology in Turkey was
prepared by Prof. Dr. Feyzi Önder, Prof. Dr. Yusuf Karsavuran, Dr. E. Pervin Önder, Dr. Aynur Önuçar and
Dr. Ertaç Tutkun within the study framework of Turkish Entomology Association. It was printed in 1982 by the
General Directorate of Plant Protection and Quarantine under the name of “Bibliography of Entomology
and Agricultural Zoology of Turkey (Fauna, Pest Control, Pests of Plants, Methods) (1595-1978)”. The
second bibliography in this field was prepared by Prof. Dr. Feyzi Önder, Prof. Dr. Yusuf Karsavuran, Dr. E.
Pervin Önder, Dr. Ertaç Tutkun and Prof. Dr. Serdar Tezcan and was published by TURDOK, Tübitak-
Turkish Scientific and Technical Documentation Center in 1986 under the name of “Bibliography of
Entomology and Agricultural Zoology of Turkey (1979-1983)”. Bibliographical information of 4416
publications are available in the first of these bibliographies and there are 1361 of them in the second
bibliography. Bibliographical information of a total of 5777 publications are classified by topics and can be
found in these two volumes.
In the 30 years since 1983 there are numerous new research institutes and universities opened in
Turkey. As a consequence, new researchers were bred and have conducted and finished projects in the
fields of entomology and agricultural zoology. Additionally, technical developments in printing techniques
resulted with many new journals and periodicals. And, also, the number and frequency of scientific meetings
increased. All these have played a role in the considerably increased number of publications. Advancements
in the areas of communication and information technologies had marked influence on, especially, the second
half of the last 30-year period. They effected the production speed of information as well as the speed of
reaching this information. While some of the produced information was instantaneously attainable, some was
harder to be reached due to the huge amount of information output.
In the preparation phase of the book called “650 Entomologists, Acarologists and Nematologists from
Turkey with Their Brief Life Histories” written by Prof. Dr. Serdar Tezcan and Dr. Füsun Tezcan which was
published by the Entomological Society of Turkey, scientists who conducted studies in these topics were
contacted. Along with their biographical information, information concerning their publications as of
December 31, 2011 was also tried to be gathered.
Within the scope of the studies which lasted approximately seven months, authors were requested to
send in their work from their publication lists which were in line with the concept of this publication. Those
which were present in previous bibliographies were sorted out and the remaining which belonged to the 28-
year period between 1984-2011 were compiled. They were standardized to the best that it could and have
been listed alphabetically by the author last names. Those publications which belonged to a period before
1984 but not found in previous bibliographies were also included in this compilation. It should be noted that
X
this study which features 10823 publications does not contain all literature published between 1984-2011.
Some works of our colleagues could not be included in this study because they did not tend to share their
publication lists despite they were accessed. Furthermore, the publications which belonged to foreign
researchers could only be included if they were co-produced with a local colleague. Unfortunately, their other
studies could not be included. It should also be noted that, differing from previous ones, the entries in this
book are not classified according to their topics.
The contents of this study is subject to become out of date quickly due to the rapid output rate of
information today. For this reason, this book has been printed in a limited number and has been distributed
to libraries and documentation centers. In order to facilitate and spread the utilization of the book, an e-book
format of it is posted in the electronic library in the website of the Entomological Society of Turkey
(http://www.entomoloji.org.tr/). This will make it available free of charge for those local and foreign
people who wish to make use of it. The e-book can be scanned or bibliographical information can be
extracted by writing either the author of the publication, title or name of the journal after clicking on the
related file.
The pdf files of the two volumes of Bibliography of Entomology and Agricultural Zoology of
Turkey, within the scope of a graduation thesis written in 2013 in the Department of Plant Protection of Ege
University, Faculty of Agriculture, has been posted in the abovementioned website with the intention to
facilitate the scanning of publications prior to 1984. We would like to point out that this will enable the user to
make use of the old publications by using the same method.
It is technologically easy to access information today; however, it may be harder to find it in a short
period of time due to the increased speed of output of information. We are wishing that this bibliographical
reference we have prepared will further contribute to the production of new knowledge today. We are
thinking that the target audience who would make use of this reference book is comprised of researchers in
the fields of biology, agriculture, forestry, veterinary, medicine, environmental sciences and standing on the
top of the list are our young colleagues who will study in the fields of entomology, acarology and nematology.
We would like to extend our gratitutes to the President of the Entomological Society of Turkey, Prof.
Dr. Enver Durmuşoğlu and to the members of the Board of Directors for their support by assuming the
printing of this study and posting its e-book form in their website which will make it possible to reach the
target audience. We would like to thank to all our colleagues, dear families and colleagues of our deceased
colleagues who have made this book possible by sending in information. We also would like to extend our
cordial thanks to Mr. Olcay Sütüven and his valued colleagues for their dedicated and meticulous work in
materializing the printing of this book.
March 2013, Bornova
Serdar TEZCAN-Füsun TEZCAN-Nilay GÜLPERÇİN

"The dissertation presents theoretical and numerical studies of unsteady flows relevant to insect flapping flight. Much emphasis is put on the development of a numerical method for modelling incompressible viscous flows past multiple moving solid obstacles. The Navier-Stokes equations are solved using a Fourier pseudo-spectral discretization. Solid obstacles are modelled with the volume penalization method. An original approach is proposed for interpolation of the time-dependent penalization mask function, which takes advantage of the spectral discretization. Two- and three dimensional solvers have been developed, which differ in some implementation aspects. Notably, the three-dimensional code is adapted for massively parallel computers.

The newly-developed numerical method is employed in a study of the Lighthill-Weis-Fogh mechanism, an unsteady aerodynamic mechanism used by some insects. That study begins, however, with the inviscid fluid model first considered by Lighthill. A transition from fling to sweep is analysed, when the connectivity of the domain changes. Then, modifications due to viscosity are explored. Important viscous effects are found near the trailing edges. The flow field near the hinge, observed in numerical simulations, is explained theoretically by local analysis of the Stokes equation.

The importance of the three-dimensional effects is assessed. Numerical simulations are performed at two different values of the Reynolds number, 128 and 1400, typical for insects of different size. The flow during fling is shown to be in reasonable agreement with the two-dimensional approximation. After the wings move apart, three-dimensional effects become essential."

The old flight instruments made by right brothers have only limited flight instruments that to only mechanical devices such as airspeed indicators, oil pressure gauge, fuel tank and single engine. The trend towards modern aircrafts have advanced features such as mentioned in this article all electronic instruments displays radar such as altimeter, attitude indicator, multiple engines displays of all parameters of aircraft. Indexing terms: fight instruments; pfd airspeed indicator; attitude indicator etc; INTRODUCTION Primary Flight Display (PFD) A PFD presents information about primary flight instruments, navigation instruments, and the status of the flight in one integrated display. Some systems include power plant information and other systems information in the same display. A typical primary flight display is shown in Figure 2-1. Primary Flight Instruments Flight instrument presentations on a PFD differ from conventional instrumentation not only in format, but sometimes in location as well. For example, the attitude indicator on the PFD in Figure 2-1 is larger than conventional round-dial presentations of an artificial horizon. Airspeed and altitude indications are presented on vertical tape displays that appear on the left and right sides of the primary flight display. The vertical speed indicator is depicted using conventional analog presentation. Turn coordination is shown using a segmented triangle near the top of the attitude indicator. The rate-of-turn indicator appears as a curved line display at the top of the heading/navigation instrument in the lower half of the PFD. Cross-Checking the Primary Flight Instruments The PFD is not intended to change the fundamental way in which you scan your instruments during attitude instrument flying. The PFD supports the same familiar control and performance, or primary and supporting methods you use with conventional flight instruments. For example, when using the primary and supporting method to maintain level flight, the altimeter is still the primary instrument for pitch, while the attitude indicator is a direct indicator and the vertical speed indicator provides supporting information. However, you need to train your eyes to find and interpret these instruments in their new formats and locations. Common Errors: Altitude Excursions and Fixation Pilots experienced in the use of conventional flight instruments tend to deviate from assigned altitudes during their initial experience with the PFD, while they adjust to the tape display presentation of altitude information. Another common error is the tendency to fixate and correct deviations as small as one to two feet at the expense of significant deviations on other parameters.

This paper describes the analytical modelling of the snap-through behaviour of a clamp-clamp pre-compressed or buckled bistable composite beam. The analytical modelling considers only spatial behaviour. The beam is modelled by considering an Euler-Bernoulli beam with an initial imperfection and the small deflection theory. The modelling considers only the first two buckling modes of the beam. A simple algorithm is proposed to solve the snap-through sequence from two equations with three unknowns. The algorithm is validated by performing an experiment using a high-speed camera recording. The camera image is processed using a developed MATLAB code. The beam is actuated at the centre and off-axis, using a simple lever mechanism with a servomotor operated at 1 Hz. The behaviour of the beam during these two actuations, which is captured by the high-speed camera, are shown in this paper. The experiment results are curve fitted with the first two buckling modes and the results compared with the analytical ones. The influence of the two-actuation positions on the overall bistable composite beam snap-through behaviour is discussed.

SUMMARY 1. The mechanism of dipteran flight has been investigated in a comparative study involving thorax manipulation, analysis of high-speed films and direct observation of tethered flies under stroboscopic illumination. 2. The click action observed in CCl^-anaesthetized Calliphora was found to be due to an interaction between the radial stop and the pleural wing process at the top of the upstroke. The movements occurring during unanaesthetized tethered flight were quite different as these structures were vertically separated except towards the bottom of the downstroke (Miyan & Ewing, 1985a,b). 3. Results of observations on tethered insect flight and on morphology did not give full support to either the click mechanism (Boettiger & Furshpan, 1952) or the model of Miyan & Ewing. 4. A novel model for the wingbeat is proposed. Distortion of the thorax brought about by the flight muscles results in upward and outward movement of the lateral scutum during the downstroke and inward and ...

Numerical simulations of the Lighthill–Weis-Fogh mechanism are performed using a Fourier pseudo-spectral method with volume penalization. Single-winged and double-winged configurations are compared, and the vortex shedding patterns are related to the lift generated in both cases. The computations of the lift coefficient are validated against the results reported previously by Miller and Peskin (J Exp Biol 208:195–212, 2005).

Insect-like flapping flight offers a power-efficient and highly manoeuvrable basis for a micro air vehicle capable of indoor flight. The development of such a vehicle requires a careful wing aerodynamic design. This is particularly true since the flapping wings will be responsible for lift, propulsion and manoeuvres, all at the same time. It sets the requirement for an aerodynamic tool that will enable study of the parametric design space and converge on one (or more) preferred configurations. In this respect, aerodynamic modelling approaches are the most attractive, principally due to their ability to iterate rapidly through various design configurations. In this article, we review the main approaches found in the literature, categorising them into steady-state, quasi-steady, semi-empirical and fully unsteady methods. The unsteady aerodynamic model of Ansari et al. seems to be the most satisfactory to date and is considered in some detail. Finally, avenues for further research in this field are suggested.