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Novel technology to enhance movement of drones in tricky mountains

Published

9 years ago

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Beijing: A novel technology has been developed by a group of scientists to help drones movement in the tough plateau mountain regions.

The unmanned aerial vehicles (UAV) designed for plateau missions are usually installed with high span chord ratio wings, which provides more lifting force at a relatively low airspeed.

The UAVs employ high span chord ratio wings but tend to lose their maneuverability.

Hence, they usually need larger turning radius and unable to maintain the altitude during sharp slope turning as the lifting force produced by the wings decrease dramatically when the bank angle is large.

The discarding of the flight performances may risk the safety of the flight in plateau mountain regions.

“The new Variable thrust direction (VTD) technology is a type of thrust vectoring control (TVC) approach that allows to manipulate the directions of thrust to the fuselage of the aircraft,” the authors noted in a paper published in the journal SCIENCE CHINA Information Sciences.

By the introduction of the VTD capability to the conventional propeller UAV, the maneuverability of the UAV has been greatly enhanced, since the VTD engine enables direct force control of the aircraft.

Most of the existing works are designed for jet engines, which cannot be applied to the conventional propeller engine aircraft.

The VTD mechanism allows redirecting parts portion of the thrust from the propeller engine to other directions rather than normal axial direction.

A combination flight controller for the VTD enhanced UAV is then proposed to coordinate the VTD controlled forces and aerodynamic surfaces forces.

“The newly developed VTD UAV was applied to implement plateau missions, which demonstrates the usefulness of the proposed technique,” the team added.

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Apple is giving a huge discount on its gadgets: Details inside

Published

3 years ago

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May 5, 2022

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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