aerosapien

Synthetic Jet Actuator CFD simulation

2014-08-19T20:32:00.002-07:00

A synthetic jet actuator is zero net mass flux device.

A synthetic jet is produced by the interactions of a train of vortices that are typically formed by alternating momentary ejection and suction of fluid across an orifice such that the net mass flux is zero. A unique feature of these jets is that they are formed entirely from the working fluid of the flow system in which they are deployed and thus can transfer linear momentum to the flow system without net mass injection across the flow boundary.

Insect flight - Caltech Dickinson lab

2012-09-16T22:45:00.000-07:00

Insect flight - Caltech Dickinson lab

This video shows the flapping wing motion of a housefly captured by a three high speed cameras along x, y and d co-ordinates. This research is carried out by Dickinson lab at Caltech. To understand the insect flight and henceforth develop a more efficient Micro Air Vehicle (MAV).

DPW4 configuration Mesh

2012-07-31T01:07:00.000-07:00

Thrust Vectoring Kite

2012-07-25T22:16:00.000-07:00

This thrust vectoring kite uses "Gimbal" mechanism for varying the thrust.

Ball in head wave using VOf

2012-06-19T22:16:00.003-07:00

alula glider

2012-04-26T04:21:00.003-07:00

Alula glider

CFD study of PAK - FA

2012-04-25T04:31:00.000-07:00

CFD study of PAK - FA

Numerical simulation of flapping

2012-03-01T02:57:00.000-08:00

Numerical simulation of flapping

regards
SANJAY.K

MAV

2012-02-02T03:27:00.000-08:00

This one is an inverse-zimmerman MAV

regards

Sanjay.K

Tunnel hull CFD simulation

2012-02-01T02:40:00.000-08:00

Numerical simulation of Tunnel Hull Speed Boat. The image at the top shows the simulation when the boat is hit sideways. The images below shows when it is hit by arrow wave. Please do post your reviews and suggestion. If you have any questions about CFD boggling in your mind do share.

Numerical Simulations by

Sanjay.K

Our Kite Aerial Photography Team Mugila Kannu - at Panambur Beach

2012-01-22T22:50:00.000-08:00

An ‘eye’ on sky

Sandhya C D’Souza, Mangalore, January 21 2012, DHNS:

(Right to Left) Me (Sanjay), Umesh, Pruthviraj, Jnaradhan Rao, Mohan

The International Kite Festival which kicked off at Panambur beach was a visual treat and many were seen glaring into the sky with their sunglasses. However, a person who was busy staring into a weird equipment in his hand caught everyone’s attention.

Many started peeping into the equipment and were filled with awe to see a bird’s eye view of the entire Panambur beach.

Prithivraj U, Associate Professor of Applied Mechanics and Hydrolics at NITK has created ‘Mugila Kannu,’ The Eye in the sky, an aerial camera mounted on a kite. This is the first time in India, that such equipment is being mounted on the kite to get an aerial view, he claims.

Explaining his equipment, Prithviraj said that he has mounted a Canon 450 series camera on a kite with a transmitter and the equipment in his hand is a receiver. “The camera records the images, and I can also click pictures. The video is transmitted through a radio frequency of 900 MHz. We can also pan and tilt the camera to get a 360 degree view with a joystick. This is controlled by another radio frequency of 2.4 GHz. I get the display captured by the camera in a small TFT Monitor,” he explains.

Manufacture cost

Prithviraj accompanied by his project staff Sanjay and Mohan have been working on Mugila Kannu for more than six months and the equipment costs Rs 75,000.

The 12 megapixel camera can record the view of 1.25 kilometers.

“We had visited Mangalore Kite Festival two years back. A person from France had brought a similar equipment and we were fascinated with it. We decided to build a similar equipment by the next Kite Festival. We have got a lot of support from Team Mangalore, especially from its member Janardhan ,” says Prithiviraj.

Most of the equipment was fabricated at NITK.

However, some parts had to be imported. “This device can be quiet handy in terms of security. One can simply hoist the camera, if the wind is good and keep watch for hours,” he concludes.

Mangalore: 'Mugila Kannu' - An 'Eye in the Sky' at International Kite Fest

Mangalore: 'Mugila Kannu' - An 'Eye in the Sky' at International Kite Fest
Prakash Samaga
Daijiworld Media Network - Mangalore
Mangalore, Jan 22: While everyone was enthusiastically flying their kites in the open sky at Panambur beach during the International Kite Festival on Saturday January 21, Prathviraj Umesh was standing with a TFT-monitored remote controller and was controlling a camera attached to a kite.
An assistant professor from the applied mechanics and hydraulics department in NITK, Surathkal, he prepared this unique device which he named ‘Mugila Kannu’ (meaning ‘eye in the sky’) which gives a bird's eye view of the beach on his monitor connected through a wireless signal.

Mohan, Janardhan rao, Pruthviraj, Umesh, Un-known and me Sanay at extreme right

Our ground control monitor unit

Our rokkaku kite and Camera unit in air

Aerial shot

aerial shot

Aerial Shot

Media Curious !!!

Ground Control unit

My Professor Rocking with the unit

Hats-off to you Sir

It is for the first time in the country that this sort of an aerial camera connected to a kite has been produced. Prathviraj was helped by project heads Sanjay and Mohan as well as Janardhan of ‘Team Mangalore’. There are two devices—one to receive the signals and another to transmit the signals—and the picture is displayed on the TFT screen in the ‘Mugila Kannu’.

The device has two different radio signals—one to transmit the image or video taken by the camera and another to pan and tilt the camera for a customized image. The camera fixed in the kite has a resolution of 12 mega pixels which is good enough to give a commanding view from the top. The frequency of the camera is 2.4 GHZ and for video recording it is 900 MHZ. It has a 360 degree view to capture the image.

Asked about what influenced him in making this unique device, he said that in the last international kite festival held here, a kite flyer named Nicolas from France had brought such a device and this made him create his own such apparatus to enjoy the kite flying from up in the sky.

Prathviraj and his team men took one year to make this device as they did it during their free time. The expenditure was about Rs 75,000 as some of the equipment used is imported. He also has plans to make it available for any security purposes if demanded by the defense department. Prathviraj, however, adds that the cost of each device will come down with mass production and he would make it for a reasonable price as it is not his business but only a hobby.

Flapping CFD link!!

2012-01-17T21:17:00.000-08:00

http://me.stanford.edu/research/centers/ahpcrc/TA1Images_contd.html

STAR CCM+ Simulations

2012-01-11T19:47:00.000-08:00

Natural fliers in slow motion

2012-01-01T21:45:00.000-08:00

UAV

2011-12-19T23:59:00.000-08:00

Global Hawk

2011-12-18T21:31:00.000-08:00

gear less flapping!!!!

2011-11-12T20:53:00.001-08:00

SMA

Piezo

The gear less flapping can be achieved by either piezo actuator or SMA (Shape Memory Alloy). The Piezo can be used to generate high frequency flapping but demands high voltage and also the displacement is low. This displacement can be amplified by means of some amplifying meshanism. In case of SMA the deflection is pretty good but the flapping frequency is low as the wire takes time to cool to retract back to its original position. Please find the attached images and videos on this page which might give you a better idea.

thanks regards
SANJAY.K

boeing X-45 Unmanned Combat Aerial Vehicle

2011-11-08T02:37:00.001-08:00

ozzy electric onithopter, Cui - Cui ornithopter & sanjay ornithopter plans

2011-11-08T00:26:00.000-08:00

useful supporting link >>> http://www.rcgroups.com/forums/showthread.php?t=455844
courtesy TERRY ADAMS

courtesy Cui-Cui

Lockheed Martin MPUAV Cormorant

2011-11-03T23:36:00.001-07:00

NASA Langley

2011-11-03T22:40:00.001-07:00

mineral oil experiment for flapping wing

2011-11-02T20:56:00.001-07:00

courtesy>> Xinyan Deng , Ph.D.

Assistant Professor ,
School of Mechanical Engineering,
Purdue University

Dragonfly type flapping wing

2011-11-02T20:55:00.000-07:00

Cortesy>>>Xinyan Deng , Ph.D.

Assistant Professor ,
School of Mechanical Engineering,
Purdue University

Mini sized ornithopter

2011-11-02T01:30:00.001-07:00

manned ornithopter

2011-11-02T01:28:00.000-07:00

courtesy >> VELKO VELKOV