dingaling

8,570 カルマ登録 13 年前

A all b bb. Ds sees

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17 時間前議論

Fan and turbine failures are supposed to be contained by the engine casing - it's part of certification. But as we see here, uncontained failures do occur. In general "airplane builders" do the absolute minimum to meet certification so they're not going to add reinforcement to protect against such an event until they're forced Into doing so by the authorities.

Turboprops can't, of course, contain a propellor failure which is why they have a big slab of armour in line with the prop disk. So in that case, yes, safety wins over cost and weight.

昨日議論

Dropped curbs also make progress more difficult for users using the pavement / sidewalk in a normal manner, since it introduces constrictions and trip hazards - which is a aspect of "curb cut effect" that is glossed over.

Try going for a run along a pavement with frequent curb cuts, it's not pleasant. UK dropped curbs are somewhat less of a trip hazard but are so frequent in towns that you end up running with an ankle at an angle.

3 日前議論

More likely omitted for cost associated with regulatory reasons, so they don't have to submit it for emitter approval.

4 日前議論

> far too many people avoid strength training.

Yes, because it hurts.

Lifting weights is sore and exhausting. You're never going to persuade rhe plurality of people to improve their physical condition by enduring pain, it needs to be engaging and appealing.

4 日前議論

> you found a way to move your body that you genuinely enjoy?

All physical exertion causes pain and discomfort, otherwise it isn't exertion. That's not ever going to be enjoyable. Tolerable, perhaps, given focus on the goal, but few people would be willing to tolerate it.

Maybe it's a surprise to you but most people's reaction to doing exercise is "when will this end?" rather than "yayy pain and breathlessness!"

4 日前議論

> In others, it's less important and speed of iteration has more value.

Maybe in some sort of topsy-turvy techbro world.

I've never, in three decades of developing, had a user say "what I want are new features updated frequently and I'm happy to accept sluggish, buggy code".

What they do say is "I want more features, sooner, without bugs".

4 日前議論

There are no studies to suggest that "Gell-Mann" is a real phenomenon. It was invented by an author, Michael Crichton, on a whim.

Any rational reader will adjust their faith in a publication based on the identified errors it makes. Too many and they'll reject it as a source for anything beyond "a thing may have happened".

4 日前議論

> search for a book

They don't have it, because they've limited shelf space and only stock popular books that are on best-seller lists. The History of Scruggs Biplanes 1907-1919 isn't one of them.

4 日前議論

At which point I might as well order from the publisher's website instead of having to explain to a shop owner what I want.

4 日前議論

Seems odd that, if he has to type parentheses so much, he didn't just map them to their own key instead of keeping them as a shift key code.

5 日前議論

By the time FB bought WhatsApp it had nearly a billion users. No need for technology conspiracy nonsense.

6 日前議論

Finding fun moments to make a job tolerable is very, very far away from doing a job because they enjoy it.

7 日前議論

E-mail, software encryption, HTTP and chat protocols have utterly transformed daily life.

9 日前議論

They could register as a corporate developer, but they decline to do so because _"that would effectively seize exclusive distribution rights to those applications."_ But it wouldn't - the course code is still available for anyone who wants to build and distribute the apps themselves.

9 日前議論

The ballpoint pen was invented in 1938. It doesn't rely on any arcane manufacturing technology.

10 日前議論

The 'new stuff' is split into two categories:

1. Better, real-time atmospheric data that allows use of boom-refraction flight profiles to prevent the boom reaching the ground. This is a trick that Concorde sometimes used when conditions were right, but only works up to about Mach 1.2. This is what Boom used for quieter flights.

2. Crazy 1950s-style airframe shaping with the X-59 that reduces boom but is impractical for an actual commercial transport. This is intended to establish a baseline for tolerable routine boom intensity, but we don't yet know how to make a commercial airframe with the same quietness.

Nothing is really new.

12 日前議論

DVD perhaps yes, until the disc degrades.

BluRay no, because your player's keys can be revoked when you pop in a new disc.

13 日前議論

> Meanwhile Airbus started with Concorde

Oh gracious no, Airbus started with the utilitarian A300 widebody twin[1].

Concorde was Sud Aviation and BAC joint venture, nothing to do with Airbus which didn't even exist at that time.

[1]The original A300A might have been interesting, having a fuselage as wide as the much later 777, but Airbus got cold feet and scaled it down to the dull and worthy A300B. Every Airbus widebody until the A380 was constrained by that decision.

13 日前議論

> And Iran no longer has any significant naval force, it's all been wiped out.

A naval force isn't required to control the Strait. Artillery, drones and missiles fired from inland can do that quite easily.

14 日前議論

In my experience DAB goes painfully 'squawky' and squeaky before finally cutting out, it's unbearable in headphones.

This video gives a good example of the signal breaking down from 00:38

https://www.youtube.com/watch?v=B-ihmXOy1h4