India shelves plan to expand French Scorpene submarine order after data breach

DCNS had offered to build three more submarines to help India replace its ageing Soviet-era fleet, and had held talks over the past year, two Indian sources said.

That offer will not now be taken up, according to the officials.

“We had an agreement for six, and six it will remain,” a defence ministry official briefed on the navy’s plans told Reuters, speaking on condition of anonymity.

I think this will definitely (?) answer the question raised regarding how many Scorpene India will have in final.

As a side note…

DCNS spokesman Emmanuel Gaudez said the company was “stunned” by the information. “The talks are ongoing with the government and our Indian partners. We have not been informed in anyway of such a decision,” he said.

Source:
Time of India Via Reuters

did I anwser your question?

Range = radius
Ferry range = maximum one way distance without having to fly back to base

Airplane range are in Nautical Miles (nm). 1 nm =~1.8 km

That picture is the irrefutable proof that the J20 is a pale copy of a SNACSO fighter: the Vautour.
…

So, now, if that’s not too much to ask, can we go back to the already sensational news that is the induction of the first non-US stealth fighter by China, a country known not so long ago for its Airforce of 5000 derelict airplanes!

Nice vid. and a sympathetic plane
🙂

Austrlia to pursue with the search.

search that has so far cost[ed] $180 million and that was expected to end this summer could now be extended into next year. This will be encouraging news for the families of the passengers and crew on the flight who feared that the search was being prematurely curtailed.

Seems some sonar contact need more attention

Source:
The Daily Beast.com

Vortice.
Horizontal surfaces tend to be inverted airfoils (pushing downward). Trailing stream hence is bent upward and vortices might induce a disturbed airflow around the rudder tip (and flutter). By positioning frwd the vertical surface you cancel the problem.

However, frwd positioning means a bigger surface (less moment arm and less rudder (hence bigger tail)), hence more drag and less moment to counter a spin. Those two points are balanced by :
– in a spin the frwd postionned vertical surface is less masked by the horizontal tail surface
– Mach rise drag is reduced thanks to more balanced reduction of wet surface at the end of the aircraft (if the plane has to fly fast obviously).

As you can see, there is not one single awnser in aircraft design without specifying clearly the problem. However, in a trainer, the need to impart a solid resistance to spin departure and exit direct our awnser toward the unshielded rudder ;).

Many general purpose aircraft see their vertical moving frwd b/w early design and final test.