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Showing posts from February, 2018

Bicycle Aerodynamic Balance of Wright Brothers: A student project worth doing!

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Innovations and inventions need creativity more than other resources like money etc.

Wright Brothers had made a very innovative yet a simple and cheap device to collect aerodynamic data for different shapes of Wings/Aerofoils.

The Bicycle Aerodynamic Balance of Wright Brothers is shown below:-


The 1901 Wright glider developed only one-third of the lift predicted by the aerodynamic data of lift coefficients given by the legendary German aviator Otto Lilienthal.
During the fall of 1901, the brothers began to question the aerodynamic data on which they were basing their designs.
They decided to measure the lift and drag coefficients themselves  and for this purpose they made two devices. The first was the bicycle aerodynamic balance and the second was the wind tunnel. 
More information on the bicycle aerodynamic balance is available on the link given below:-
https://www.grc.nasa.gov/www/k-12/airplane/wrights/biketest.html

Amol to start Rs 35000 crore factory to build aircraft in India: Heartiest Congratulations

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Maharashtra government inks Rs 35,000 crore pact with a pilot to build aircraft PTI | Updated: Feb 20, 2018, 15:00 IST

BOUNDARY LAYER FLOWS + EXTERNAL* INCOMPRESSIBLE VISCOUS FLOWS *(unbounded) - ppt download

Please click on the link below to see the slideshow.

CHAPTER 9: EXTERNAL* INCOMPRESSIBLE VISCOUS FLOWS *(unbounded) - ppt download

Vertical Climb

(Click on the heading 'Vertical Climb'. The post text along with the video will appear. To see the video, click on it.)

(Video Courtesy, Shri Amit Jangir)

In this video, a model aircraft can be seen climbing vertically.

What about the Thrust to Weight Ratio of such an aircraft!

Can an aircraft climb vertically upwards with a Thrust to Weight Ratio of less than 1?