Login | Signup now       

Guest

 Click to see how  

HOME | VIDEOS | DOCUMENTS | COLLECTIONS | UPLOAD | BROADCAST | MY ACCOUNT | FEEDBACK | ABOUT

Share  Title: Aerodynamics

 
iConnect (Beta)   |  Like   |    Sponsor  |   Comment   |    Report  

Related Profiles

If you are an author or an inventor or an individual related to the work displayed in this video, you can click on the 'add me as' button to link your researchusa profile to this entry. Doing so automatically puts you on the iConnect network bringing great visibility to all your related work.

    
 
Article

View Cross Ref (Beta)

Your Edit is Valuable. Editor's names show on Edit pannel.Edit this article  

 

Aerodynamics (shaping of objects that affect the flow of air or gas) is a branch of fluid dynamics concerned with the study of forces generated on a body in a flow. The solution of an aerodynamic problem normally involves calculating for various properties of the flow, such as velocity, pressure, density, and temperature, as a function of space and time. Understanding the flow pattern makes it possible to calculate or approximate the forces and moments acting on bodies in the flow. The use of mathematical analysis, empirical approximation and wind tunnel experimentation form the scientific basis for heavier-than-air flight.


Airflow across an aircraft wing. A greater angle deflects air downwards at a geater angle to increase LiftAerodynamic problems can be classified in a number of ways. The flow environment defines the first classification criterion. External aerodynamics is the study of flow around solid objects of various shapes. Evaluating the lift and drag on an airplane, the shock waves that form in front of the nose of a rocket or the flow of air over a hard drive head are examples of external aerodynamics. Internal aerodynamics is the study of flow through passages in solid objects. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe.

The ratio of the problem's characteristic flow speed to the speed of sound comprises a second classification of aerodynamic problems. A problem is called subsonic if all the speeds in the problem are less than the speed of sound, transonic if speeds both below and above the speed of sound are present (normally when the characteristic speed is approximately the speed of sound), supersonic when the characteristic flow speed is greater than the speed of sound, and hypersonic when the flow speed is much greater than the speed of sound. Aerodynamicists disagree over the precise definition of hypersonic flow; minimum Mach numbers for hypersonic flow range from 3 to 12. Most aerodynamicists use numbers between 5 and 8.

The influence of viscosity in the flow dictates a third classification. Some problems involve only negligible viscous effects on the solution, in which case viscosity can be considered to be nonexistent. The approximations to these problems are called inviscid flows. Flows for which viscosity cannot be neglected are called viscous flows.

 

 
Related Documents
Hints for understanding low speed wind tunnels
Hummingbird Flight
Laminar Separation Bubble
Plasma Wind Tunnels
Supersonic Nozzle design by Method of Characteristics
Physics of flow about lifting bodies
A Technical Essay on the Gyroplane
 
Member Documents
 

Keywords
aerodynamics    wind  tunnel    smoke    airfoil    prandtl  
 
 About This Video
 
 Subject Aeronautics and Astronautics
 Category Experiments
 Duration 00:00:02
 Views 4015
 Added 19-10-07
 Contributor    123456
 Add to Favourites
 Report Abuse
 
 Related Videos
 See More

Smoke

 RunTime  00:00:30
 Uploaded  28-12-07
 Views  5373
   
 Smoke flow visualization ...

Smoke

 RunTime  00:00:20
 Uploaded  28-12-07
 Views  5017
   
 Smoke flow visualization ...

Smoke

 RunTime  00:00:20
 Uploaded  28-12-07
 Views  4985
   
 Smoke flow visualization ...

Flow

 RunTime  00:04:45
 Uploaded  27-12-07
 Views  4647
   
 Flow Visualization: Aerod...

How

 RunTime  00:18:29
 Uploaded  25-06-10
 Views  4476
   
 How Airplanes Fly

Massive

 RunTime  00:03:33
 Uploaded  27-12-07
 Views  3445
   
 Massive NASA Rocket Explo...

Fish

 RunTime  moderate
 Uploaded  31-10-12
 Views  1920
   
 Fish Inspired Wind Turbin...

Wind

 RunTime  00:02:00
 Uploaded  19-11-07
 Views  3676
   
 Wind Shear

SR

 RunTime  00:01:19
 Uploaded  25-06-10
 Views  3978
   
 SR 71 Blackbird

Theory

 RunTime  00:00:02
 Uploaded  28-10-07
 Views  5307
   
 Theory of Lift Generation...

Crosswind

 RunTime  00:01:07
 Uploaded  15-12-07
 Views  3797
   
 Crosswind Landing of Airb...

GPU

 RunTime  00:00:37
 Uploaded  10-12-07
 Views  4294
   
 GPU fluid simulation - ad...

Damped

 RunTime  00:08:41
 Uploaded  24-08-09
 Views  4057
   
 Damped and Driven Oscilla...

Structural

 RunTime  00:04:12
 Uploaded  28-12-07
 Views  4288
   
 Structural Collapse: the ...

Air

 RunTime  00:03:14
 Uploaded  19-11-07
 Views  3480
   
 Air Traffic Pattern

GPU

 RunTime  00:00:29
 Uploaded  10-12-07
 Views  4410
   
 GPU fluid simulation - bl...

GPU

 RunTime  00:00:21
 Uploaded  10-12-07
 Views  4851
   
 GPU fluid simulation - fi...

Boeing

 RunTime  00:00:35
 Uploaded  28-12-07
 Views  4420
   
 Boeing 747 Wing Tip Vorte...

 Member Videos
 See More

Nanotechnology

 RunTime  00:10:28
 Uploaded  27-11-07
 Views  8055
   
 Nanotechnology Takes Off ...

Blood:

 RunTime  00:00:02
 Uploaded  01-11-07
 Views  4927
   
 Blood: Path of a Red Bloo...

The

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4543
   
 The Civil War: Honorable ...

Matlab

 RunTime  00:00:02
 Uploaded  18-10-07
 Views  4536
   
 Matlab Tutorial for the b...

The

 RunTime  00:00:02
 Uploaded  06-11-07
 Views  4368
   
 The Hubble Deep Field: Th...

Manipulating

 RunTime  00:00:02
 Uploaded  18-10-07
 Views  4352
   
 Manipulating Animated Fun...

Sound

 RunTime  00:05:03
 Uploaded  24-11-07
 Views  4295
   
 Sound & Vision (Animation...

CEV

 RunTime  00:00:02
 Uploaded  22-10-07
 Views  4279
   
 CEV NASA space launch roc...

Oppenheimer

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4211
   
 Oppenheimer

The

 RunTime  00:00:02
 Uploaded  03-11-07
 Views  4202
   
 The Triumph and Tragedy o...

Aerodynamics

 RunTime  00:00:02
 Uploaded  19-10-07
 Views  4016
   
 Aerodynamics

Applications

 RunTime  00:14:04
 Uploaded  13-11-07
 Views  3933
   
 Applications of Supply an...

 

 

Comments | Queries | Clarifications