I would blow Dane Cook posted:

will it?

I would blow Dane Cook posted:

I would blow Dane Cook posted:

will it?

NightGyr posted:

Everything in the firing mechanism is mechanical based on the barrel's position in the cycle. All the motor does is spin the whole assembly. So manually turning the barrels does the exact same thing.

Lord Stimperor posted:

jerk off a helicopter

babyeatingpsychopath posted:

If you're allowed to say, does the firing pin have a trip cam or something so it actually drops on the primer under spring pressure, or is it just cammed so that at firing speed the pin is going fast enough?

MrYenko posted:

https://youtu.be/rIlwHT4IdRc

quote:

The Dillon Gun Bolt set is comprised of six Dillon DA1000 Gun Bolts. Dillon Gun Bolts offer several important advances over the General Electric gun bolts. Firing pins found in GE bolts have blunt tips. Blunt tips can puncture the primer of a cartridge during the firing sequence. When this happens a portion of the hot gas is vented passed the firing pin and through the bolt. This has two effects. The first is to cause the firing pin to compress the firing pin spring rearward against the firing pin retention pin. If this happens enough times the firing pin spring will lose temper, which leads to light firing pin strikes on primers. These ‘light strikes’ may contain insufficient energy to fire the cartridge.

The second effect of gas venting is to ‘etch’ the tip of the firing pin. The more the firing pin tip is damaged the more likely it is to puncture larger holes in the primer. At a certain point enough gas is vented into the bolt body that the bolt head retention pin may actually be sheared into three pieces, leading to catastrophic bolt failure.

To solve these and other problems, Dillon patented and entirely redesigned the gun bolt for use in the Dillon M134D. The DA1000 bolt is completely compatible with the General Electric GAU-2B/M134.

Dillon Aero’s bolts are amazingly strong and reliable. The firing pin tip is rounded, not blunt, to avoid primer puncture. In firing tests totaling well over one million rounds, Dillon bolts did not puncture a single primer. Because of this, Dillon springs last fifteen times as long as GE springs.

Other improvements include dual, opposed guidance tangs that drive the bolt head into and out of the locked position. This is compared to the single tang GE bolt head which was susceptible to cracking.

Also, bolt searing is simpler and more reliable. GE bolts have a boss on the rear end of the firing pin that engages a track in the gun rotor. With Dillon bolts the sear is contained within the bolt head and is triggered by bolt compression. This feature makes rotor design less complex and less expensive.

simplefish posted:

Apologies if this has been posted recently:

You can watch where the out-of-control PRC rocket is above our heads (with altitude and speed) at https://orbit.ing-now.com/satellite/48275/2021-035b/cz-5b/

It's losing altitude at an alarming rate

hobbesmaster posted:

I see it at about 200km and that it’s in a 165 km x 326 km orbit so it should be losing altitude as it approaches periapsis?

simplefish posted:

Oh I've had it as losing 80km since I opened the page

But that doesn't track with the table at the bottom, I guess. Last measured 21 hrs ago so probably just a janky projection for whatever reason

Ola posted:

The orbit is an ellipse, so it moves between 300-something and 100-something on every orbit, which is around 90 minutes. You can tell the datapoints are about 90 minutes (or 2x 90 minutes) apart so it's measured at almost the same spot. The altitude at that point keeps going down, so it's definitely heading our way.

Nebakenezzer posted:

So what is this satellite?

RoastBeef posted:

One of the stages from the rocket that launched their new space station's core module.

RoastBeef posted:

One of the stages from the rocket that launched their new space station's core module.

I would blow Dane Cook posted:

https://twitter.com/AP_Oddities/status/1388895045940662273

Murgos posted:

If China actually wants to be taken seriously in space then they need to start playing like an adult and cleaning up their messes when they are done with their toys.

Leaving massive cores full of toxic crap to land who knows where is just nasty. I get that they don't give a poo poo about their own populace but what if that thing comes down in New York City, London, Paris, Moscow or even Beijing? Sure, it's not likely but the world is full of all kinds of historical examples of unlikely things happening.

Safety Dance posted:

So it's just a stage, and not the space station module itself?

`Nemesis posted:

If it's just a rocket stage then it has zero chance of making it to the ground.... anyone putting heavy things in orbit does the exact same thing, the only exception was the space shuttle.

quote:

“It is always difficult to assess the amount of surviving mass and number of fragments without knowing the design of the object, but a reasonable “rule-of-thumb” is about 20-40% of the original dry mass.”

Components made of heat resistant materials, such as tanks and thrusters made stainless steel or titanium, can reach the ground. Surviving objects will fall vertically after deceleration and travel at terminal velocity.

quote:

McDowell said he hoped China would have enhanced the core stage to perform a controlled deorbit after separating from Tianhe. “I think by current standards it’s unacceptable to let it reenter uncontrolled,” McDowell said.

“Since 1990 nothing over 10 tons has been deliberately left in orbit to reenter uncontrolled.” The Long March 5B core stage, without its four side boosters, is thought to have a “dry mass”, or when it is empty of propellent, of about 21 metric tons in mass.

`Nemesis posted:

If it's just a rocket stage then it has zero chance of making it to the ground.... anyone putting heavy things in orbit does the exact same thing, the only exception was the space shuttle.

Phanatic posted:

Yes.

Standard practice is that if the stage is gonna reach orbit to put a kick motor on it to deorbit it when it’s done its job. China seems to have removed this feature from its newest Long Marches, possibly on the basis of thinking “dropping big chunks on metal on random countries is something superpowers do”; the same thing happened several months ago.

OddObserver posted:

TBF both US and USSR did drop entire space stations on random countries (Skylab and Salyut 7, respectively).

slidebite posted:

Judging by the twitter replies I assume this is in bad taste? Because I have zero clue.

Zero One posted:

I don't know military regs for call signs... Maybe they prohibit pop culture names? Otherwise it's no worse than if your callsign was 'Chewbacca' or something else nerdy.

Zero One posted:

I don't know military regs for call signs... Maybe they prohibit pop culture names? Otherwise it's no worse than if your callsign was 'Chewbacca' or something else nerdy.

Ola posted:

The orbit is an ellipse, so it moves between 300-something and 100-something on every orbit, which is around 90 minutes. You can tell the datapoints are about 90 minutes (or 2x 90 minutes) apart so it's measured at almost the same spot. The altitude at that point keeps going down, so it's definitely heading our way.

wzm posted:

There are military call signs like "Cujo", "Cylon", and "Colt", so I don't think it's pop culture limits. The national guard A-10s in Baltimore use "Colt", so you'll hear them use "Colt 45" sometimes. "Bud" and "Coors" are also in use for the ANG, so I don't think the beer references in airplanes are a problem either.