AERODYNAMICS OF THE FLIERS

Introduction: Information Technology can be defined as information integration and transfer using networked computers, is a cognitive tool that has expanded peoples notions of what is possible. It has perfused our society faster than any technology in history, and its influence on research has already been significant.

Insect information is a novel subject dealing with the generation, processing and dissemination of insect information through the use of modern information and communication technology

Information on the aerodynamic parameters of different fliers will play a vital role on under standing the flight adaptations. The data generated from the study throw light on the flight range, hovering capacity, Manaeuribiliy of the insect, kinetic energy in relation to wing beat frequency etc.

The aerodynamic parameters like static, dynamic, dynamic parameters of air induced by the flier and wing beat frequency will help in understanding the flight adaptation of the fliers. The studies on the Bioenergetics will help in estimating the induced power and inertial power, which are helpful in flight metabolism. .

It is user-friendly software, to estimate more than 30 aerodynamic parameters of a given flier. The program has provision to calculate wing beat frequency and other aerodynamic parameters by giving six important basic parameters as in put data.

Description of software: This program was developed to estimate the aerodynamic properties of fliers. For a given set of input data the program generates static, dynamic, dynamic parameters of air induced and aerodynamic properties. User can also opt for calculating the wing beat frequency. As such sets of males and females of fliers can be processed at a time, which will take few seconds to produce out put.

Technical description: The application has to be installed on a web server. This was developed using Active server pages on windows NT/2000 environment. Hence IIS (Internet Information Services) is required. Once this application is hosted on the web server all the clients connected to the web server can access the application and produce the result. In this application security is provided so that one cannot tamper other user’s data. Hence every user initially has to register his name and password and then can use the application. Where as any user either register or not can access the data and see the results, but they cannot modify the data.

Input Parameters: Mass of the flier (gms), Length of the wing (cms), Area of the wing (cm2), Length of the flier (cm), breadth of the flier (cm), Mass of the wing (gms) are the basic parameters from which static parameters, dynamic parameters, dynamic parameters of air induced and aerodynamic parameters are derived.

Execution of the program: The software is use friendly, operationally feasible, open ended and an excellent program to calculate aerodynamic properties. By giving six input parameters of N no. of sets (both male and female data) results of each individual will be generated in four tables with average values. Final results can be tabulated from the average values

Description of the out put form: After entering the input data, on clicking the results four tables will be generated. Static parameters includes along with 6 basic parameters Wing span, Effective wing breadth, Disc area, Wing swept area, Wing swept volume, Fine ness ratio, Arc length, Total wing area. Dynamic parameters includes Moment if inertia, Angular velocity, Angular acceleration, Angular momentum, and Kinetic energy.

Dynamic parameters of air induced includes Rate of mass flow, Mass of air induced, Acceleration, Velocity, Kinetic energy, and Momentum.Aerodynamic parameters includes Aspect ratio, Wing loading, Disc loading, MW/MF and Frequency of wing beat.

Potential Use of the Software
 

• Automated monitoring of pests and biocontrol agents in integrated pest management
• Automated monitoring of mosquitoes and other insects of importance to public health
• As research tool for studying insect movement and dispersal

Appendix

Mf           Mass of the flier (g)
l              length of the wing (cm)
L             Span of the Wing, = 2l + b f (cm)
Aw          Area of the Wing (Single) (cm2)
A             Total wing area = 2 Aw (cm2)
Beff         Effective breadth of the wing = Aw / l (cm)
lf             Length of the flier (cm)
bf            Breadth of the flier (cm)
C            Chord length (cm)
Mw         Mass of the wing (g)
f              Stroke angle (rad)
Sd          Area of the wing disc = (P L2/ 4), (cm2)
Sw          Wing swept area = (1/3) (P L2 Beff) (cm2)
Vw          Wing swept volume = (P L2 Sw Beff / 3) (cm 3)
I              Moment of inertia of the wing = (5/16) (Mw l2) (g.cm2)
n            Frequency of wing beat = 2x Mf / Sw Beff r (Hz)
w            Angular velocity of the wing = (1/3) (P 2n ), (rad sec-1) 
a            Angular acceleration of the wing = ( 2/3 ) (P 3 n 2) ( rad. sec-1) 
q             m Angular momentum of the wing = Iw , (g cm 2 rad. Sec-1)
z             Arch length = ( 1/3 ) (P l ) ( cm )
¡              Fineness rating = lf // bf
l              z/c
AR          Aspect ratio = l 2 / A
r              Density of air = 1.1x 10-3 (g cm-3)
dm /dt    Rate of mass flow of air = Sw Beff r n l2 ( g sec-1 )
ma         Mass of the induced air = Sw Beff r ( g )
viz           Velocity of induced air = ( Mf g ) ½ / ( 2 Sw r ½ ) ( cm )
aiz          Acceleration of the induced air = viz n, ( cm sec-2 )
Ka          Kinetic energy of induced air = (1/2 )(ma viz2 ) (erg )
Pa          Momentum of induced air = ma viz (g cm sec-1 )
WL         Wing loading = Mf (A) ( g cm 2 )
DL         Disc loading = Mf l ( Sd ) ( g cm2 )
KE         Kinetic energy = 1/2 Iw 2