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Roscosmos showed unique engines for heavy satellites Roscosmos showed unique engines for heavy satellites

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Roscosmos showed unique engines for heavy satellites

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The Keldysh Center, which is part of Roscosmos, at the Army-2022 International Military-Technical Forum presented correction systems for heavy geostationary spacecraft based on KM-75 Hall engines and ID-200KR ion engines.

Roscosmos showed unique engines for heavy satellites

As the press service of the state corporation notes, the correction system for heavy geostationary satellites based on the KM-75 engine is the first system in the world based on a Hall-type engine with an accelerating voltage of 810 V, which is almost three times higher than foreign analogues and provides savings of up to 40% of the working fluid (xenon). The KM-75 engine provides the highest specific impulse among Hall engines of this class. The engine went through a full cycle of ground experimental testing with full confirmation of the resource.

The correction system for heavy geostationary spacecraft based on the ID-200KR engine is the first domestic system of this type based on an ion engine. The ID-200KR engine provides a significant gain in specific impulse compared to Hall engines of this class. The use of carbon-carbon composite material can significantly increase the life of the engine.

These systems are designed to correct the spacecraft’s orbit in the “north-south” and “west-east” directions. To supply the working fluid xenon to the engines, a flow control unit is used, which has unique characteristics in terms of power consumption, weight and overall dimensions.

The Hall thruster is one of the most common types of electric rocket engines, characterized by the presence of an external magnetic field. When a potential difference is applied between the cathode and the anode, positive plasma ions are accelerated and reactive thrust is created.

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A strange gaming laptop without a discrete graphics card and not at all with Windows. Lenovo is preparing the release of the IdeaPad Gaming Chromebook

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A strange gaming laptop without a discrete graphics card and

Lenovo is preparing a gaming laptop of the IdeaPad Gaming line, which, firstly, does not work under Windows, and secondly, does not have a discrete graphics card.

A strange gaming laptop without a discrete graphics card and not at all with Windows.  Lenovo is preparing the release of the IdeaPad Gaming Chromebook

The full name of the novelty is the IdeaPad Gaming Chromebook, and here it is already clear that Chrome OS acts as the OS. But the operating system here is just one of the oddities of this gaming laptop. The second, as already mentioned, is the lack of a discrete graphics card. What’s more, it’s not just some Ryzen 7 6800U, whose iGPU is so powerful that such a laptop could hardly be called a gaming laptop. Instead, Intel processors serve as the heart here: Core i3-1215U or Core i5-1235U. Recall that their graphics cores are very modest in their capabilities, so you don’t even have to think about some modern demanding games. Moreover, the laptop also has a screen with a resolution of 2560 x 1600 pixels, which creates an additional load on the GPU.

As a result, it is completely unclear why the laptop is gaming, but here even the design is the same as in other Lenovo gaming models.

As for the rest of the parameters, the novelty is equipped with a 120-Hz IPS screen with a diagonal of 16 inches, a 512 GB SSD, 8 GB of RAM, a pair of USB-C ports, a pair of USB-A, microSD, Wi-Fi 6 and an aluminum cover.

Price data is not yet available.

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Geely becomes a co-owner of Aston Martin

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Geely becomes a co owner of Aston Martin

Chinese holding Geely has acquired a 7.6% stake in the British sports car manufacturer Aston Martin. The amount of the transaction is unknown, but judging by the current value of the shares, it could be about 66.3 million pounds (73.8 million dollars).

Geely becomes a co-owner of Aston Martin

It is noteworthy that Geely managed to complete this deal only the second time: the Chinese wanted to buy a stake in the British company back in 2020, but Aston Martin then refused their offer.

The purchase of Aston Martin shares has already been confirmed on the Geely official website. The Chinese holding said in a statement that “Geely can contribute to the future success of Aston Martin.” “We look forward to exploring opportunities to work with Aston Martin”, said Zhejiang Geely CEO Daniel Donghui Li.

The Chinese have not yet disclosed the purpose of participating in the capital of Aston Martin, but it is obvious that the purchase of shares will open up access to technologies and developments that could later be useful for the Lotus brand, another British company in the Geely portfolio.

Previously, Geely bought a 10% stake in Mercedes-Benz Group AG and a 34% stake in the Korean division of Renault SA. In addition, the Chinese holding owns the brands Geely Auto, Volvo, Lynk & Co, Geometry and Zeekr, London Electric Vehicle Company, a London electric taxi and van manufacturer, and Terrafugia, a flying car developer.

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By popular demand, a long-awaited feature has appeared on the Windows 11 taskbar

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By popular demand a long awaited feature has appeared on the

The latest test build of Windows 11 has a feature that users have been asking for a long time. Now, when you right-click on the taskbar, you can open the “Task Manager” from the context menu.

By popular demand, a long-awaited feature has appeared on the Windows 11 taskbar

“Based on your feedback, we’ve added a link to Task Manager when you right-click on the taskbar,” Microsoft’s Amanda Langowski and Brandon LeBlanc said in a statement.

In addition, Insiders have received access to the function of rearranging icons in the notification area, however, not all participants in the Early Access program will be able to use this feature yet.

In addition, on the Dev channel, Microsoft has begun rolling out new customizations for widgets. It is now possible to show the widget board when hovering over an icon in the taskbar.

And on the Beta channel, they reintroduced a special version of the taskbar for devices with touch screens. This panel will only appear when you disable or fold the keyboard on 2-in-1 devices, that is, when you need to use only the screen.

It is not yet clear when these features will appear in the release.

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