11 Jan, 2016
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Worksheets on Current Topics for Banking English Test Papers.
Nirdeshak is developing tailor made comprehension section from the recent news articles published in leading newpapers across the world. It is important to recognizing letters and words in the passage, as it is the first step in learning to read. For students it is vital that students comprehend, or understand, what they are reading. They must be able to get the meaning of the text: What is the author telling the reader?
Rocket Powered Car
Local speedsters are keen to prove it’s possible to become the best—and fastest—in the world with determination, skill, and a whole lot of science.
The Perth-based Aussie Invader team, headed by driver and Australian land speed record holder Rosco McGlashan, aim to set a new world land speed record in their rocket-powered car, hoping to reach speeds of 1610km per hour, or faster than the speed at which a bullet leaves a handgun.
“Most of what we are trying to achieve has never been done before,” Aussie Invader team member Mark Read says.
“Every part of the car is custom made, you just cannot buy these parts off the shelf.
For example, the wheels are machined from solid blocks of aerospace-grade aluminium, each wheel weighs 140kg, and at 1610km/h (1000 mph), they will spin at 10,000 repetitions per minute.
“This will mean there will be 50,000 g exerted on the rim… so if you placed a 1kg weight on the rim at those speeds, it would weigh 50 tonnes…the wheels just want to pull themselves apart,” he says
The team are putting their car together in a Mullaloo shed, relying on help from experts in aerodynamics, engineering, rocket propulsion and manufacture to construct the vehicle for around $4 million.
The local car’s price tag compares favourably with the hundred million dollars spent so far by their British opposition.
“Our car is simple in design, using just one pressure-fed rocket, with few moving parts,” Mr Read says
“A lot of our car’s parts are designed with the use of CAD [computer-aided design] and tested using CFD [computational fluid dynamics]…the beauty of this is that parts can be created by large milling machines, with very little human error.”
Reaching 1000mph is the one big barrier left in motor racing, Mr Read says.
“If we were to break the world land speed record, Australia would hold both the land and water world speed records, which would be a fantastic achievement for this country, and show us as a leading country in engineering and technology.
He is also inspired by the opportunity to excite the next generation of Aussie innovators.
“This world faces some massive problems, and to help overcome them we need very clever kids to study science, technology, engineering and maths,” he says.
Q1. Custom made
a) Made according to practices of the place
b) Made to individual order
c) Made for export
d) Made to clear customs
a) To put forth or into use, as power
b) To get tired
c) Hard work
a) Lying down
b) Standing up
c) To depend on
d) To get rid of
Q4. Compares favourably
a) Be better than
c) Get better off
Source of the article: http://phys.org/news/2015-12-rocket-powered-car-world.html
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