this post was submitted on 24 Feb 2024
54 points (100.0% liked)

Technology

1083 readers
50 users here now

This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.


Ask in DM before posting product reviews or ads. All such posts otherwise are subject to removal.


Rules:

1: All Lemmy rules apply

2: Do not post low effort posts

3: NEVER post naziped*gore stuff

4: Always post article URLs or their archived version URLs as sources, NOT screenshots. Help the blind users.

5: personal rants of Big Tech CEOs like Elon Musk are unwelcome (does not include posts about their companies affecting wide range of people)

6: no advertisement posts unless verified as legitimate and non-exploitative/non-consumerist

7: crypto related posts, unless essential, are disallowed

founded 5 years ago
MODERATORS
 

The “revolutionary” air-breathing engine could, in theory, lift an aircraft from a runway to more than 30km (18.6 miles) into the stratosphere and continuously accelerate it to 16 times the speed of sound.

At this velocity, even the longest intercontinental flights could take just one or two hours while consuming less fuel compared with conventional jet engines.

(Read full article using https://www.removepaywall.com)

top 22 comments
sorted by: hot top controversial new old
[–] Norgur@kbin.social 30 points 8 months ago (1 children)

Yeah, no. Just no. Absolutely no. Faster than everything else.and higher than everything else and all of that by burning less energy? Come on people, stop falling for this kind of crap.

[–] huginn@feddit.it 27 points 8 months ago

This article is bullshit: they're reporting that a blueprint was made. No demonstration, no proof of it working.

Rotary detonation isn't a new concept and GE has demonstrated a rotary detonation scramjet for 0 - Mach 5.

https://www.geaerospace.com/press-release/other-news-information/ge-aerospace-demonstrates-hypersonic-dual-mode-ramjet-rotating

If you really think that 0 to Mach 16 is within reach with current technology RDEs I have a bridge to sell you.

Darpa has all the money of God and they've been throwing billions at the exact problem of rotary detonation. Everybody knows that detonation is more fuel efficient than deflagration and that turbine engines are holding jet aircraft back from hypersonic flight.

When they make a Mach 16 demonstrator I'll believe them. Until then I'm still very excited for the demonstrated and actual capabilities of RDE Scramjets.

[–] Tristaniopsis@aussie.zone 13 points 8 months ago (1 children)

Fuck the CCP with a bucket of rusty nails.

[–] viking@infosec.pub 13 points 8 months ago (2 children)

You need to draw the line between a country's government and some of its brightest minds. This is a scientific breakthrough, and should be celebrated as such. Period.

[–] Tristaniopsis@aussie.zone 12 points 8 months ago (2 children)

No. Sorry, but if the government is horrific then any scientific advancements will be used in unethical ways. It’s unfortunate but true.

The CCP is brutally evil and that’s that.

[–] viking@infosec.pub 12 points 8 months ago (1 children)

The research has been published. Everybody in the world is free to replicate it. The CCP is no more or less capable of doing so, just because it happened on their turf.

[–] Kbin_space_program@kbin.social 7 points 8 months ago (1 children)

It has been published, but a staggering number of scientific "papers" coming out of China are turning out to be complete fabrications.

[–] viking@infosec.pub 6 points 8 months ago (2 children)

Correct, so it should be independently reviewed and recreated to validate the claims. Crying wolf just because there were issues before wouldn't be fair.

[–] Kbin_space_program@kbin.social 3 points 8 months ago

The trick is that they're literally spamming papers at this point.

[–] NoIWontPickaName@kbin.social 2 points 8 months ago* (last edited 8 months ago) (1 children)

So you don’t base any of your decisions on past experiences?

[–] viking@infosec.pub 1 points 8 months ago

Not when it comes to scientific research.

If the same person or someone acting under the same supervisor in the same faculty published some more amazing sounding research after previous ones had been debunked, I'd be sceptical.

But in a country with 1.4bn people and more than 3.000 universities? There's gotta be some bad eggs, but you can't discredit every single one due to the actions of a few.

I've met brilliant scientists in and from China.

[–] Zerush@lemmy.ml 9 points 8 months ago (1 children)

Most of these inventions will be used by military first, in China as also in the USA, which isn't an atom better in this and other aspect. It's precisely the USA which use more investment in weapons and defense as any other country and not precisely for humanity reasons.

[–] Tristaniopsis@aussie.zone 3 points 8 months ago (2 children)

The US is committed to free speech, the CCP is not.

[–] NoIWontPickaName@kbin.social 3 points 8 months ago

Are we? The current wave of book bans would say different.

It must be those two gay penguins’ fault

[–] zout@kbin.social 2 points 8 months ago
[–] faintwhenfree@lemmus.org 6 points 8 months ago (1 children)

I trust no articles from SCMP.

[–] viking@infosec.pub 1 points 8 months ago

That's a different story, but you can simply look up the research paper.

[–] cmnybo@discuss.tchncs.de 13 points 8 months ago

If that engine actually works, it would be cool to see it on a space plane. Mach 16 is nearly 2/3rds of orbital velocity. If you could go that fast on an air breathing engine, you wouldn't need to carry nearly as much oxygen to get into LEO.

[–] master5o1@lemmy.nz 5 points 8 months ago (4 children)

I imagine that theoretical speed could only be used for drone planes.

[–] heluecht@pirati.ca 14 points 8 months ago

@Zerush @master5o1 Speed is not a problem. Acceleration is.

load more comments (3 replies)