Russian scientists find defect in new heavy lift space rocket engine

The new heavy lift rocket will replace Russia's Proton M, above, and can carry more than 20 tons. (AFP)
Updated 18 January 2019
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Russian scientists find defect in new heavy lift space rocket engine

  • The new heavy lift space rocket is capable of carrying more than 20 tons into the orbit
  • Russian President Vladimir Putin said the project is very important for the country's defense

MOSCOW: Scientists have discovered a defect in the engines of Russia’s new flagship heavy lift space rocket that could destroy it in flight, an apparent setback to a project President Vladimir Putin has said is vital for national security.
The Angara A5, which was test-launched in 2014, is being developed to replace the Proton M as Russia’s heavy lift rocket, capable of carrying payloads bigger than 20 tons into orbit. A launch pad for the new rocket is due to open in 2021.
In July, Putin said the Angara A5 had “huge significance” for the country’s defense and called on space agency Roscosmos to work more actively on it and to meet all its deadlines.
The issue with the Angara A5 was brought to attention by scientists at rocket engine manufacturer Energomash in a paper ahead of a space conference later this month.
The paper, reported by RIA news agency on Friday and published online, said the engines of the Angara A5 could produce low frequency oscillations that could ultimately destroy the rocket.
A special valve had been fitted to mitigate the issue, but in some cases the oscillations continued, it said. Energomash did not immediately reply to a request for comment.
Russia’s space program has been dogged by mishaps in recent years, including failed cargo delivery missions into space and the aborted launch in October of the manned Soyuz mission to the International Space Station. Russia’s current heavy lift rocket, the Proton M, has had a nearly 10 percent failure rate in more than 100 launches since it entered service in 2001, creating pressure to reorganize and improve the space program.


Saudi students invent robot to improve solar panel efficiency

The technology addresses the problem of decreased efficiency in the production of electricity by photovoltaic solar panels caused by harsh environmental conditions. (Photo/Social media)
Updated 20 April 2019
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Saudi students invent robot to improve solar panel efficiency

  • The device boosts productivity from 70% to 80%

TAIF: Two students at Taif University in Saudi Arabia have invented a robot that improves the efficiency of solar panels by more than 14 percent by keeping them clean and dust free.
The technology developed by Ahmed Fayez Ahmed Mohammed and Ahmed Ali Zayed Oudha, who are studying electrical engineering, addresses the problem of decreased efficiency in the production of electricity by photovoltaic solar panels caused by harsh environmental conditions, including the build up of dust, which can be particularly problematic in desert environments.
To counter this, they created a high-performance, cost-efficient smart robot that prevents the accumulation of dirt and dust on the panels.
It has sensors that allow it to move across the surface of the panels and accurately detect and remove any buildup. They also prevent the robot from wasting energy operating when the panels are not generating power — for example at night or on cloudy days. The cleaning mechanism uses cylindrical brushes and a high-performance fan.
The students worked on the project under the supervision of Dr. Mohammed Salahuddin Mohammed Suleiman and Dr. Musleh Al-Harthy, the dean of the engineering faculty.