Category: Technica Aquarius

Enlarge / The James Webb Space Telescope lifts off from French Guiana on an Ariane 5 rocket on December 25. (credit: ESA – S. Corvaja)

Welcome to Edition 4.27 of the Rocket Report! And after two weeks away, the Rocket Report is back. I’d like to say I’m tanned, rested, and ready, but hey, one out of three isn’t bad. Anyway, there’s a ton of news to report after the holiday hiatus, so let’s jump right into it.

As always, we welcome reader submissions, and if you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Ukrainian investor asked to divest from Firefly. The US government has requested that Max Polyakov, a wealthy Ukrainian tech entrepreneur, sell his stake in the rocket company Firefly Aerospace Inc., Bloomberg reports. The military cited national security concerns in making the request. Polyakov backed Firefly with $200 million in 2017 after it declared bankruptcy and is credited with turning the company around. Polyakov had already stepped back from Firefly’s board of directors a year ago.

Enlarge / Artist’s impression of the Ramjet propulsion system proposed in 1960 by physicist Robert W. Bussard (credit: NASA)

In Poul Anderson’s 1970 novel Tau Zero, a starship crew seeks to travel to the star Beta Virginis in hopes of colonizing a new planet. The ship’s mode of propulsion was a so-called “Bussard ramjet,” an actual (though hypothetical) means of propulsion which had been proposed by physicist Robert W. Bussard just a decade earlier. Now, physicists have revisited this unusual mechanism for interstellar travel in a new paper published in the journal Acta Astronautica, and alas, they have found the ramjet wanting. It’s feasible from a pure physics standpoint, but the associated engineering challenges are currently insurmountable, the authors concluded.

A ramjet is basically a jet engine that “breathes” air. The best analog for the fundamental mechanism is that it exploits the engine’s forward motion to compress incoming air without the need for compressors, making ramjet engines lighter and simpler than their turbojet counterparts. A French inventor named Rene Lorin received a patent in 1913 for his concept of ramjet (aka, a flying stovepipe), although he failed to build a viable prototype. Two years later, Albert Fonó proposed a ramjet propulsion unit to increase the range of gun-launched projectiles and eventually was granted a German patent in 1932.

A basic ramjet has three components: an air intake, a combustor, and a nozzle. Hot exhaust from fuel combustion flows through the nozzle. The pressure of the combustion must be higher than the pressure at the exit of the nozzle in order to maintain a steady flow, which a ramjet engine achieves by “ramming” external air into the combustor with the forward speed of whatever vehicle is being powered by the engine. There is no need to carry oxygen on board. The downside is that ramjets can only produce thrust if the vehicle is already moving, so they require an assisted takeoff using rockets. As such, ramjets are most useful as a means of acceleration, such as for ramjet-powered missiles or for increasing the range of artillery shells.

Enlarge / The Apple Park campus stands in this aerial photograph taken above Cupertino in October 2019. (credit: Sam Hall/Bloomberg via Getty Images)

Jeff Wilcox, Apple’s director of Mac system architecture who oversaw much of the Apple Silicon transition, has left Apple to join Intel. He will head up Intel’s efforts to develop its own system-on-a-chip.

Wilcox makes this move after eight years as a key player in Apple’s desktop and laptop product development. Before those eight years, he was actually at Intel, so the move to Intel is a return for him, not an entirely new frontier.

He announced the change on LinkedIn over the past few weeks. In his initial LinkedIn post, he wrote:

Enlarge / Lenovo ThinkBook Plus Gen 3. (credit: Lenovo)

While the majority of laptops still use the 16:9 aspect ratio, we’ve seen many companies increasingly embrace taller aspect ratios over the last couple years. Lenovo, while also playing around with the likes of 16:10 laptop screens in other upcoming machines, is taking a wider approach. At CES this week, it announced a laptop with an ultrawide display. Oh, and it has a second screen next to the keyboard, too.

Lenovo says the ThinkBook Plus Gen 3 is the first machine to use a 17.3-inch 21:10 screen. We’ve seen ultrawide laptops before, but laptops with a screen that’s wider than 16:9 are incredibly rare today.

Toshiba tried to make it a thing in 2012. The company’s 21:9 Toshiba U845W laptop promised a superior experience for watching movies (at least ones made in the same aspect ratio) and multitasking. More recently, Acer’s 2017 Predator 21 X used the 21:9 aspect ratio and a unique curve to claim supreme gaming immersion (again, with supported titles).

Enlarge / The Asus Zenbook 17 Fold OLED can take many forms. (credit: Asus/YouTube)

When Intel unveiled its 12th-gen mobile CPUs on Tuesday, the company pointed to the chips’ suitability for use in foldable PC designs by showing unidentified concept images. It didn’t take long to figure out what Intel was talking about. On Wednesday, Asus announced a foldable PC—think of it as a 17.3-inch OLED tablet that can fold in half.

In addition to a 12th-gen i7 CPU, the Asus Zenbook 17 Fold OLED comes with 16GB of RAM and a 1TB PCIe 4.0 SSD. The components live in a device measuring 14.9 x 11.32 x 0.34–0.46 inches when open and housing an OLED touchscreen with a 2560 x 1920 resolution and a 0.2 ms GTG response time.

Asus announced several OLED laptops at CES this week, but this is the only one with a bendable display. (credit: Asus)

The display has a 4:3 aspect ratio, making it tall when fully open. If you fold it down the middle, the screen will act as two 12.5-inch displays with 1920 x 1290 resolutions and 3:2 aspect ratios. When you’re done, you can fold the device shut so that it’s “smaller than a sheet of photocopier paper,” measuring 11.69 x 8.27 inches, according to Asus’ announcement. And if you’re worried about how many times you can fold the device, Asus claims the hinge lasts for at least 30,000 cycles.