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Air/smoke flow past rotating cylinder

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Dear students, you must have studied flow past stationary and rotating cylinder during your Aeronautical Engineering. However every student doesn't get a chance to actually do this experiment. I did not get such a chance when I did M.Tech at the IIT Madras and my AEC at the AFTC, Bangalore. I firmly believe that students can learn a lot about Aerodynamics by doing flow-visualization experiments along with studying the theory. Hence I requested my brilliant student Er. Ajit to make this experimental set-up and conduct this experiment for the benefit of the students. Here are the two experiments showing the streamline pattern past the stationary and rotating cylinder.

Smoke Tunnel Experiment on Aeroplane Wing

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How can we see the airflow over the wings of an aeroplane? We can make a small model or replica of the aeroplane wing and see the airflow past it inside the smoke tunnel. As the angle of attack changes, we can see interesting changes occurring to the flow streamlines. Few of the streamlines which were going below the wing at low angle of attack, change their direction and start going above the wing at higher angle of attack.

Flight Without Formulae Questions

Q1 What is Engineering? Q2 What is Aerospace Engineering? Q3 What is the difference between Aeronautical & Aerospace Engineering? Q4 Why is airship much bigger than an aeroplane(both carrying same number of passengers)? Q5 Why is airship much bigger than a boat (both carrying same number of passengers)? Q6 How is the lift of airship different from that of an aeroplane? Q7 Define Aeroplane? Q8 What are the differences between an aircraft and an aeroplane? Q9 How is sailplane different from a glider? Q10 Is lift more than the weight during steady climb of an aeroplane? State your answer with reason? Q11 Is lift less than the weight during steady glide of an aeroplane? State your answer with reason? Q12 Name & explain the principle on which the airship flies. Q13 What do you understand by Aerostatic Lift? Q14 What do you understand by Aerodynamic Lift? Q15 What is a difference between a land plane and a sea plane? Q16 What is a difference between helicopter and gyr

भारतीय छात्रों ने किस तरह से 6 दिन में दुनिया का सबसे पतला उपग्रह बना डाला: SPACE DYNAMICS

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छह साल पहले, कुछ भारतीय छात्रों ने मिल कर एक सपने को साकार करने का कार्य आरंभ किया - भारत के लिए उपग्रह बनाए जाएं और अंतरिक्ष मिशन डिज़ाइन किए जाएं। जनवरी 2019 में, इन्होंने मात्र छह दिनों में दुनिया का सबसे पतला, सबसे हल्का उपग्रह सफलतापूर्वक बनाकर और प्रक्षेपित करके इतिहास में अपना नाम दर्ज करवा लिया। फोटो: स्पेस किड्ज इंडिया के श्रीमति केसन जनवरी 2019 में लॉन्च से पहले कलामसैट वी 2 को थामे हुए।  फोटोग्राफस: स्पेस किड्ज़ इन्डिया के सौजन्य से। 2017 में, अमेरिकी अंतरिक्ष अभिकरण्, नेशनल एयरोनॉटिक्स एन्ड स्पेस एडमिनिस्ट्रेशन ने चेन्नई स्थित स्पेस किड्ज़ इन्डिया द्वारा बनाए गए 64 ग्राम वज़न वाले सब-ऑर्बिटल उपग्रह का प्रक्षेपण किया, जिससे भारत में अंतरिक्ष शि‍क्षा के क्षेत्र का सूत्रपात हुआ। भारतीय छात्रों द्वारा बनाया गया 'गुलाब जामुन' नामक दुनिया का सबसे पतला उपग्रह बन पाता, कमी बस इतनी सी रह गई कि यह सब-ऑर्बिटल था और इसे ऑर्बिट यानी कक्षा में परिक्रमा किए जाने के लिए नहीं बनाया गया था। For full reading of the article, please click the link given below:- https://w

Can Aeroplanes Fly Without Wings?

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To view the images, please click on the title 'Can Aeroplanes Fly Without Wings?' of this post. https://www.quora.com/Can-an-airplane-fly-without-wings

Kerala will always salute these IAF pilots for their courage

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via http://www.rediff.com/news/special/kerala-will-always-salute-these-iaf-pilots-for-their-courage/20180824.htm Men and women of the Indian Air Force who conducted rescue missions in Kerala's worst deluge speak to  Rediff.com 's Archana Masih. The crew of a rescue team led by Wing Commander B K Sahu (in red), Co-pilot Squadron Leader J P Mothsra (on his right), Flight Gunner Sergeant Sudhir (far right) and Garud Commando Vikas (left)  Photograph: Kind courtesy Wing Commander B K Sahu. Two years after she was commissioned as an Indian Air Force pilot, Flight Lieutenant Swati Rathore was on her first rescue mission. Among the youngest and the only lady pilot from her unit deployed in the Kerala flood rescue effort, the Ajmer native flew four sorties on day one with her commanding officer Wing Commander Shivang Kumar. "It was raining and there was water everywhere. People were holding out cloth pieces as a signal and waving out. The first house we approached

Few Questions of Fluid Mechanics

1.  What are the SI & CGS units of viscosity & kinematic viscosity? What is the relation between the SI & CGS      unit of viscosity? What is the value of viscosity of air & water at 288 K temperature? 2.  (a)     Define bulk modulus of elasticity without using any formula?     (b) Bulk modulus of elasticity of water is 2000000 kN/m 2 .  A pressure of 10 bar is applied on water having        volume of 2m 3 . Find the  change in volume of water in m 3 . 3.  Find the flux of velocity having the components as 9x, -3y and 0 along the x, y and z axes respectively over      the closed surface of the sphere given by x 2 + y 2 + z 2 = 9. 4.   A flow field is given by u = ay, v = bz & w =cx . Determine whether the flow is rotational or irrorational. 5.  The clearance space between a shaft and a concentric sleeve has been filled with a Newtonian fluid. The     sleeve attains a speed of 600 mm/s when a force of 600N is applied to it parallel to the