Astronauts say look forward to space launch after Soyuz accident

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The launch of the Soyuz MS-11 spacecraft is scheduled on December 3, 2018 from the Russian-leased Kazakh Baikonur cosmodrome.
BAIKONUR(KAZAKHSTAN): Astronauts set to board the first manned space mission since an unprecedented accident aboard Russia’s Soyuz, on Sunday brushed aside safety concerns, saying they were ready to take risks.

Oleg Kononenko of Roscosmos, Anne McClain of NASA and David Saint-Jacques of the Canadian Space Agency will launch to the International Space Station (ISS) from Baikonur in Kazakhstan on Monday.

They will head to the ISS after a Soyuz rocket carrying Russia’s Aleksey Ovchinin and US astronaut Nick Hague failed on October 11 just minutes after blast-off.

The pair escaped unharmed, but the failed launch was the first such incident in Russia’s post-Soviet history and a new setback for the country’s once proud space industry.

The crew heading to the ISS dismissed any possible concerns about their safety.

“Risk is part of our profession,” crew commander Oleg Kononenko told a news conference at Baikonur, adding they “absolutely” trusted teams preparing them for the flight.

“We are psychologically and technically prepared for blast-off and any situation which, God forbid, may occur on board,” the 54-year-old said.

Anne McClain, a 39-year-old former military pilot, struck a similar note.

“We feel very ready for it,” she said.

Canada’s Saint-Jacques added that Soyuz spacecraft was “incredibly safe,” noting it was “actually reassuring” to witness the October aborted launch from Baikonur.

The accident highlighted the “smart design of the Soyuz and the incredible work that the search and rescue people here on the ground are ready to do every launch,” the 48-year-old said.

Russia said last month the launch of the Soyuz rocket failed because of a sensor that was damaged during assembly at the Baikonur cosmodrome. But officials insisted the spacecraft remains reliable.

Saint-Jacques will be the first Canadian astronaut to visit the space station since Chris Hadfield, who recorded a version of David Bowie’s Space Oddity classic aboard the ISS in 2013.

Canada’s governor general and former astronaut Julie Payette is expected to be among dignitaries to watch Monday’s launch.

Of the trio set to reach the ISS six hours after blastoff, both Saint-Jacques and McClain will fly for the first time. Kononenko is beginning his fourth mission to add to an impressive 533 days in space.

NASA’s McClain was deployed to Iraq and represented the United States women’s national rugby union team in the past.

She has said that training to spacewalk was similar to rugby since it demands “grit, toughness, mental focus, and more”

[“source=forbes]

A new look for gear milling – Iscar

Technology and its products are often causative: A technology might be applied to develop more effective and intelligent products, which in turn can play an important role in advancing that technology.

This interrelationship may be observed in metalworking. Over the last few years, leading-edge technology has resulted in multitasking machine tools and machining centers with impressive working possibilities. At the same time, this progress in machine tool engineering is significantly changing metal cutting technology.

The advanced multifunctional machine tools increasingly widen the range of machining operations that can be performed. Technological processes developed for these machines are oriented to maximise machining operation for one-setup manufacturing, creating a new source for more accurate and productive manufacturing. Milling gears and splines is one of the operations suitable for performing on the new machines.

ModuGear

Traditionally, gear (and spline) making is a complicated process that involves milling, chamfering, grinding and other operations. With batch manufacturing, the majority is made on specific machines like gear hobbing, gear shaving, gear grinding and so on. Developments in technology have changed the limits of hardness for cutting and considerably increased operational accuracy. This in turn has reduced abrasive machining in gear making while decreasing rough cutting. The modern multifunctional machines, which meet the requirements of one-set-up manufacturing, have proved to be perfect for various gear making operations.

These new machines require appropriate tooling and cutting tools manufacturers should prepare their response accordingly, which is why producers of general purpose rotating cutting tools are reconsidering the role of gear-milling cutters in their programme for standard product lines.

Iscar, one of the leaders in the cutting tool industry, is embodying this trend with a three-point programme for form gear making tools:

• Milling cutters carrying indexable inserts
• Milling cutters with replaceable cutting heads based on the T-Slot concept
• Milling cutters with replaceable Multi-Master cutting heads

ModuGear, the family of indexable gear milling cutters reflects a conventional design approach, comprising disk-type tools with tangentially clamped LNET inserts. The tangential clamping principle provides an extremely rigid and durable cutter structure that results in stable and precise enough machining tooth or spline profiles. Its principal application is producing involute gears of relatively low accuracy and rough gear-milling operations that feature a 1mm to 1.75mm gear module range.

T-Gear

The cutters with replaceable heads have two significant advantages compared with gear milling tools carrying indexable inserts. They offer better precision and allow the design of gear-milling cutters that are small in diameter but feature quite a large number of teeth. The replaceable heads are mounted in bodies (shanks), which are standard-line products suitable not only for the gear-milling heads but also for other types of head (for milling slots and grooves, for example). This enables customers to increase operating efficiency of the versatile shanks and to reduce tool stock, providing added value.

The replaceable solid carbide heads of the T-Gear SD D32-M…-SP15 family are mounted in standard T-Slot SD-SP15 cylindrical shanks and transform the latter into 32mm diameter gear milling cutters. The precise profile of the cutters’ teeth and the accurate and reliable SP-connection between the shank and the head define its range of use: Milling involute gears featuring a 1mm to 2mm module.

Both types of milling cutters (those with indexable inserts and those with replaceable heads) meet the requirements of standard DIN 3972, basic profile II.

There are two types of Multi-Master spline and gear making solid carbide heads. The first type is represented by the MM SS heads that were specially designed for milling involute spline shafts, specified by DIN 5480 and ANSI B92.1 standards. These heads are intended for 1mm, 1.25mm, 1.5mm and 3mm module (DIN 5480) and 8mm, 10mm, 12mm and 24mm diametral pitch (ANSI B92.1).

The heads of the second type, MM SG, are used in milling spur gears in accordance with DIN 3972 (module 1mm to 1.75mm) and ANSI B6.1 (diametral pitch 15mm to 24mm) standards.

The main application field for Multi-Master heads is the efficient production of small to medium batches of spline and spur gears in various industrial branches.

The world of gears is very rich and multiform, embracing a wide variety of external and internal gears like spur, helical, bevel, hypoid, and more. Manufacturing these gears encompasses an entire, dynamic industrial sector with its own methods, equipment and tooling. The introduction of multitasking machines in gear milling as a serious alternative to a dedicated machine represents a new challenge to this sector and producers of commonly used cutting tools should be ready for this significant change. Iscar meets this challenge while maintaining the requisite high standards demanded by end users.

[“Source-“metalworkingnews]

Exclusive first look: Hennessey’s Venom F5

Image result for Exclusive first look: Hennessey Venom F5Internet, you may want to take a seat. As Top Gear can exclusively reveal the first official drawing and mission statement of John Hennessey’s Venom F5, Texas’ V8 twin-turbo hyper-thing that’s got its sights set firmly on Bugatti’s 1,479bhp Chiron.

Like the F5’s predecessor – the Venom GT – the Venom F5 has one overarching goal: going fast. Really bloody fast. How fast? Well, given it’s named after the fastest and most powerful wind on earth – the F5 tornado – a gust capable of anything between 261 mph and 318 mph, it looks like the new F5 is set to have some big numbers on its speedo.

“I think something in the 290mph range will be possible,” boss John Hennessey told TG in an exclusive interview. Normally a claim so big from a manufacturer so small should be taken with a pretty hefty helping of scepticism. But don’t forget Hennessey has form. Could this be the first 300mph production car?

Unlike the Venom GT that was panned by naysayers as a mutated, boosted Lotus Exige, the F5 will have its own unique chassis, design and aerodynamic package formed around a carbon fibre tub housing a big ol’ American V8 with two big ol’ turbos attached for lots and lots of power. We were told last year that this could be in excess of 1,400bhp – all going through a single-clutch paddle-shift transmission (a dual-clutch ‘box was rejected on grounds of weight and durability), or, if you’re brave, the same six-speed manual from the old Venom. Yee-haw.

The F5 will continue Hennessey’s raison d’être of maximum power and minimal weight (nearly 500kg less than a Chiron) in a mid-engine, rear-wheel-drive package. Something John cunningly calls ‘Minimal Maximus’. That’s Texan Latin, for you.

As you can see from the rough silhouette sketches, the F5 has a low, mean outline designed purely to pierce the air as efficiently as possible. That gaping air vent in the bonnet will aid cooling but also channel air up and over the car to a spoiler suspended from two hydraulic struts that has potential to double up as an air brake a la Chiron and Ford GT. Handy when travelling at potentially twice the speed of a commercial airliner at takeoff. Apparently, this new design also gifts a roomier and comfier cabin than the previous-gen Venom.

But before you spool up your thoughts and call poppycock on the claims, don’t forget Hennessey has been Bugatti’s dirty dancing partner for years. As you’ll likely be aware, Hennessey’s first hypercar, the 1,244bhp Venom, hit 270.49mph on NASA’s Kennedy Space Center runway: faster than the Veyron Super Sport’s 269.86mph recorded vmax (the Bugatti’s official 267.86mph figure, if you’re wondering, was the average of its upwind and downwind runs at Ehra-Lessien).

That run wasn’t enough to pinch the official Guinness top speed crown from Bugatti – the Venom’s run was only made in one direction, not both ways as required – but still emphatically proved the point. The Venom wasn’t slow. And is yet to be beaten by the as yet untested top speed of the Chiron.

To make the F5 happen, a new division has been set up – Hennessey Special Vehicles – that will design, build, develop and sell the F5 from Hennessey HQ in Sealy, Texas. However, we’ll see what the F5 looks like with the lights on later this year. Let the high-speed games begin!

[“Source-ndtv”]

AdSense Unveils a New Look for Mobile Text Ads

Google has given AdSense mobile text ads a sleek new look. In a recent article on the official Inside AdSense blog , the search engine giant has unveiled the new format that “allows for higher performance with a more beautiful and user-friendly appearance.”

The redesigned version has been rolled out on mobile devices, so you should be able to take a look at it right now.

Changes to Ad Appearance

Compared to the previous look, the headline and body copy appear bigger now. Google has also changed the font that makes the ads look more visually appealing than before.

Another key highlight is the text ads now feature elements such as a shaded background and a centered button, which according to Google “bring together the parts of the ad into a cohesive whole.” In the blog post, Clyde Li, AdSense Software Engineer explains that “the look and feel is inspired by material design, like richer text ads” that were launched earlier in 2015.

Looking at the comments left by users on the blog post, it would seem the response to the changes is largely positive.

Facebook Catching On

Google’s latest move to give a new look to text ads on mobile seems largely influenced by Facebook’s growing interest and popularity in this space.

Facebook has been eyeing mobile ads for some time and trying to catch up to Google. Last year, the social networking company reported mobile ads represent 59 percent of its overall ad revenues. For Google, on the other hand, the ride is turning out to be quite bumpy. Even though Google’s ad business grew 16.5 percent in the same quarter, it was less than what was expected.

To stay on top of its game, Google is taking some important steps. In October, the company announced its AMP project to accelerate mobile page loading times. The following month, Google revealed the fast loading mobile pages with ads will be coming in 2016.

The AMP initiative will reduce mobile data usage and curb ad-blockers that have impacted the company’s ad revenue.

The message is pretty clear: Google doesn’t want to lose its share of the mobile advertising pie. Updating the look of mobile ads is probably one of the many changes it has in store. It will be interesting to see what the next move is.

Image: Google

[“source-smallbiztrends”]