Tuesday 10 February 2015

This plane will be able to fly anywhere in the world within 4 hours



The engine will be able to fly in outer space too.
FIONA MACDONALD   13 DEC 2014
British aerospace firm Reaction Engines Limited is working on an engine system that will be able to take 300 passengers anywhere in the world in just four hours.
Even more impressively, the engine will also be used to fly a plane in outer space, as Business Insider reports.
The engine system is called SABRE, and it relies on a device called the precooler – technology that cools down the air entering the engineer system by more than 1,000 degrees Celsius in .01 seconds. That corresponds to an unheard-of cooling rate of 400 megawatts, and will allow the plane to “breathe” oxygen.
This means that the engine system will be able to run at a much higher power than is currently possible
According to Reaction Engines, SABRE will be used inside two upcoming plane models – LAPCAT A2, a commercial plane that will be able to transport passengers from Brussels to Sydney in “two to four hours”, and also the ambitious SKYLON, an un-piloted and re-usable space plane that aims to provide cheaper access to space.
As chief engineer Alan Bond explains in the video below, the LAPCAT A2 will be able to “pretty easily” fly around the world at an incredible Mach 5 – five times the speed of sound.
The precooler system weighs around a tonne, and, as Business Insider explains, is made up of a swirl of thin pipes that are filled with condensed helium. These pipes suck heat from the air, cooling it down to -150 degrees Celsius before it enters the engine.
The company is already testing the SABRE engine system, and is planning the first test flights for a tantalisingly close 2019.
SKYLON, the plane that will take us into outer space, will be 82 meters long and, although it’ll fly like a rocket in the air, it takes off and lands horizontally like a normal plane, which will make it more versatile. The model is estimated to cost around US$1.1 billion each.
Unfortunately, the plane won’t have any windows to look out of, but if new developments in aviation are anything to go by, that might not be such a bad thing – companies are now putting cameras on the outside of the planes and live streaming a 360 degree view on the inside walls or passengers.
Imagine being able to see this while flying through outer space.

Atmega16 IC

ATmega16 is an 8-bit high performance microcontroller of Atmel’s Mega AVR family with low power consumption. Atmega16 is based on enhanced RISC (Reduced Instruction Set Computing, Know more about RISC and CISC Architecture) architecture with 131 powerful instructions. Most of the instructions execute in one machine cycle. Atmega16 can work on a maximum frequency of 16MHz.

ATmega16 has 16 KB programmable flash memory, static RAM of 1 KB and EEPROM of 512 Bytes. The endurance cycle of flash memory and EEPROM is 10,000 and 100,000, respectively.

ATmega16 is a 40 pin microcontroller. There are 32 I/O (input/output) lines which are divided into four 8-bit ports designated as PORTA, PORTB, PORTC and PORTD.
 ATmega16 has various in-built peripherals like USART, ADC, Analog Comparator, SPI, JTAG etc. Each I/O pin has an alternative task related to in-built peripherals. The following table shows the pin description of ATmega16.

Monday 9 February 2015

How to use WhatsApp Web Version

WhatsApp, the most popular cross-platform mobile messaging app has over 600 million active users. The world's popular mobile messenger has now landed on laptops, desktops, and basically any computer capable of running Chrome browser. If you haven't managed to do it yet, here's an easy step-by-step guide to use WhatsApp on PC.

1. Make sure that your phone supports this feature. Currently, WhatsApp works with Android, iOS, Windows Phone, BlackBerry, Nokia S60 (Symbian), and Nokia Series 40 devices

2. Open Chrome browser on PC/Laptop and type in web.whatsapp.com
3. You'll see a QR code on the PC screen
4. Open WhatsApp on your smartphone. Click on Options, then select WhatsApp Web. If you don't see this option, update the app

5. A QR code scanner will pop-up on your phone. Point it at your browser windows
6. WhatsApp web interface will load in your browser. Depending on your Internet connectivity, it might take up to a minute

Enjoy WhatsApp on your PC now.