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Re: Military Tech / Science

Post by Kasey Chang » Mon Sep 18, 2017 6:07 pm

Holman wrote: Wasn't the F-117 basically just a tech demo for stealth technology anyway?

IIRC there was debate about whether it really had a role it could fill, and then the Serbs (the Serbs!) managed to shoot one down.
It's designed in the 1970's before massive computing simulation was available. First flight was 1981.

Serbs shot it down due to a couple factors:

1) constant ingress / egress corridors

2) NATO at the time did not use encrypted radio for air tasking orders and other military radio traffic, so the Serbs knew exactly when they're coming, and spotters are on scene waiting for them.

3) SA-3 is believed to have manual guidance backup with thermal and optical help.

4) Serb commander claimed he can detect Stealth aircraft with his SA-3 radar set to the longest wavelength possible and possibly proprietary tweaks.

https://www.defenceaviation.com/2007/02 ... art-1.html
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Re: Military Tech / Science

Post by xwraith » Tue Sep 19, 2017 11:04 am

I forgot to call it "a box of pure malevolent evil, a purveyor of
insidious insanity, an eldritch manifestation that would make Bill
Gates let out a low whistle of admiration," but it's all those, too.
-- David Gerard, Re: [Mediawiki-l] Wikitext grammar, 2010.08.06

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Re: Military Tech / Science

Post by xwraith » Tue Sep 19, 2017 4:04 pm

I forgot to call it "a box of pure malevolent evil, a purveyor of
insidious insanity, an eldritch manifestation that would make Bill
Gates let out a low whistle of admiration," but it's all those, too.
-- David Gerard, Re: [Mediawiki-l] Wikitext grammar, 2010.08.06

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Re: Military Tech / Science

Post by Max Peck » Tue Sep 19, 2017 4:07 pm

That's fairly salty for a BBC reporter. :)
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Re: Military Tech / Science

Post by Kasey Chang » Wed Sep 20, 2017 1:26 am

Dang, that's really high-flying... for a pickup.
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Re: Military Tech / Science

Post by Grifman » Wed Sep 20, 2017 9:24 am

Holman wrote:Wasn't the F-117 basically just a tech demo for stealth technology anyway?

IIRC there was debate about whether it really had a role it could fill, and then the Serbs (the Serbs!) managed to shoot one down.
No, those debates were before it was actually deployed in combat. It was very effective in Iraq and led the first coalition strikes:

http://foxtrotalpha.jalopnik.com/how-st ... 1753796745

It was no tech demo.
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Re: Military Tech / Science

Post by Daehawk » Wed Sep 20, 2017 10:06 am

Wasn't the test bed for stealth called Have Blue or Aurora?
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Re: Military Tech / Science

Post by Isgrimnur » Wed Sep 20, 2017 10:10 am

Have Blue

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The Aurora has never been confirmed.

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Re: Military Tech / Science

Post by Daehawk » Wed Sep 20, 2017 10:17 am

In my eye Have Blue is a artistic beauty. Makes the steal even more ugly.
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Re: Military Tech / Science

Post by Isgrimnur » Mon Nov 06, 2017 11:11 am

M-1A2SEPV3
On Oct. 4, 2017, the Army’s program office for ground vehicles announced that the service had accepted the first M-1A2SEPV3 “on schedule and on budget.” General Dynamics Land Systems builds the tank in Lima, Ohio, using existing M-1 hulls as a starting point.

The Army asked to buy 56 M-1A2SEPV3 tanks in 2018, against a total requirement for around a thousand of the new vehicles — enough to equip all of the branch’s active-duty tank brigades. At present, a V3 costs around $20 million. The price should drop as the production rate increases.

While officially a variant of the nearly four-decade-old M-1 tank, the SEPV3 is, in all the ways that matter, essentially brand new. The preceding variant, the M-1A2SEPV2, entered service in 2007.
...
The M-1A2SEPV3 boasts improved inertial navigation to achieve what Kotchman described as “better round dispersement” — in other words, improved main-gun accuracy. There’s also a data-link for programmable munitions, making the SEPV3 compatible with new, “smart” cannon rounds that are beginning to enter the Army’s arsenal.

The V3 tank also has tougher front and rear armor than the V2 does — plus a built-in jammer for defeating radio-triggered improvised explosive devices.

Some of the most important improvements are seemingly the most boring. The V3 comes with a new auxiliary power unit installed underneath the armor. This APU allows a tank crew to power their vehicle’s electronics without turning on the main engine. That way, a tank can quietly and efficiently monitor the battlefield for hours at a time without guzzling a full tank of gas.
...
Fifty years ago, the Army might have given a vehicle with so many new features a new designation — at the very least, referring to it as the M-1A3. But in recent decades, the military has preferred to downplay many of its technological advancements.

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Re: Military Tech / Science

Post by Bakhtosh » Mon Nov 06, 2017 11:22 am

Daehawk wrote:
Wed Sep 20, 2017 10:17 am
In my eye Have Blue is a artistic beauty. Makes the steal even more ugly.
F-117 is ugly. But mission requirements forced some design decisions to modify the shape.

At least the B-2 is a jaw dropping machine.

Image

Found this while I was pulling up an image of the B-2. Too interesting to not include:
Image
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Re: Military Tech / Science

Post by Paingod » Mon Nov 06, 2017 11:48 am

A lot of our best feats of engineering seem to revolve around mimicking things evolution worked out over millions of years.
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Re: Military Tech / Science

Post by Kasey Chang » Mon Nov 06, 2017 1:47 pm

There's an actual term for that "bio-mimicry"
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Re: Military Tech / Science

Post by Daehawk » Mon Dec 11, 2017 9:21 pm

Enlarge Image
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Re: Military Tech / Science

Post by Holman » Mon Dec 11, 2017 10:04 pm

...Forgive my ignorance, but are the yardage markers and field lines heated or what?

(No, I have not watched a football game in decades.)
Much prefer my Nazis Nuremberged.

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Re: Military Tech / Science

Post by Daehawk » Mon Dec 11, 2017 10:21 pm

Holman wrote:
Mon Dec 11, 2017 10:04 pm
...Forgive my ignorance, but are the yardage markers and field lines heated or what?

(No, I have not watched a football game in decades.)
Football fields are heated with buried tubing. Not sure on the numbers normally but on the Army Navy game the numbers were digitally added.

http://www.grounds-mag.com/mag/grounds_ ... ning_heat/
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Re: Military Tech / Science

Post by Isgrimnur » Tue Dec 19, 2017 9:56 pm

MQ-25

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Boeing on Tuesday unveiled its entrant into the U.S. Navy’s MQ-25 tanker drone competition, a prototype wing-body-tail aircraft ready to begin tests this month.

So far, Boeing has released one photo of the aircraft facing head-on to the camera, proving that the company has fabricated a prototype and that — as expected — it has moved away from the flying wing design it considered putting forward to the precursor of the MQ-25 program, when the Navy prioritized strike and ISR capabilities for its first carrier-based drone.

“It’s an aircraft with the mission in mind, and we felt confident that the wing-body-tail design was the best for the refueling mission,” said Boeing spokeswoman Didi VanNierop, who added that the company incorporated lessons from its Phantom Ray unmanned demonstrator and other Boeing unmanned aerial systems.

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Re: Military Tech / Science

Post by xwraith » Wed Dec 20, 2017 10:28 am

So cute!
I forgot to call it "a box of pure malevolent evil, a purveyor of
insidious insanity, an eldritch manifestation that would make Bill
Gates let out a low whistle of admiration," but it's all those, too.
-- David Gerard, Re: [Mediawiki-l] Wikitext grammar, 2010.08.06

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Re: Military Tech / Science

Post by Udar4450 » Tue Dec 26, 2017 8:34 am

Ouch, nuke. Means that the guy has spent at least 6 months under the sea... one of my high school penpals joined the Navy in a nuke sub, it's hard for his wife, but I heard that (in the French navy at least) you can have a faster career growth and get back to a normal life as an officer later on.

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Re: Military Tech / Science

Post by em2nought » Tue Dec 26, 2017 7:44 pm

Udar4450 wrote:
Tue Dec 26, 2017 8:34 am
Ouch, nuke. Means that the guy has spent at least 6 months under the sea...
Um, no. He's an Electronics Technician. :wink:

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Re: Military Tech / Science

Post by xwraith » Fri Jan 26, 2018 1:47 pm

I forgot to call it "a box of pure malevolent evil, a purveyor of
insidious insanity, an eldritch manifestation that would make Bill
Gates let out a low whistle of admiration," but it's all those, too.
-- David Gerard, Re: [Mediawiki-l] Wikitext grammar, 2010.08.06

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Re: Military Tech / Science

Post by xwraith » Fri Jan 26, 2018 1:47 pm

I forgot to call it "a box of pure malevolent evil, a purveyor of
insidious insanity, an eldritch manifestation that would make Bill
Gates let out a low whistle of admiration," but it's all those, too.
-- David Gerard, Re: [Mediawiki-l] Wikitext grammar, 2010.08.06

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Re: Military Tech / Science

Post by Isgrimnur » Fri Jan 26, 2018 2:01 pm

xwraith wrote:
Fri Jan 26, 2018 1:47 pm
He thinks it saved him from a court martial for sending a combat photo to be published by a civilian magazine (PDF, Pp 30-31, 65).

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Re: Military Tech / Science

Post by Isgrimnur » Wed Jan 31, 2018 11:19 am

Endgadget: NASA reinvents the wheel tire.
Based on the principles of chainmail armor, the "Superelastic" tires can withstand more deformation than any other non-pneumatic tire. At the same time, they could potentially withstand extraplanetary abuse and provide better traction for next-generation rovers.
...
It's not just the chainmail-style configuration that makes the tires work, though. They're also built from alloys like nickel-titanium (NiTi) that can deform up to 10 percent without losing their shape. "The use of a NiTi shape memory alloy yield a superelastic tire that is virtually impervious to plastic deformation," according to the team at NASA's Glenn Research center.


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Re: Military Tech / Science

Post by Daehawk » Wed Jan 31, 2018 12:13 pm

xwraith wrote:
Fri Jan 26, 2018 1:47 pm
RIP. ive stumbled across that photo while perusing soldiers and animals pics. Weeeeell that sounded wrong.
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Re: Military Tech / Science

Post by Grifman » Thu Feb 01, 2018 3:36 pm

From Chad, with love:

Image

https://warisboring.com/49425-2/
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Re: Military Tech / Science

Post by dbt1949 » Fri Feb 02, 2018 12:57 am

In Viet Nam I saw those Chinooks carrying Hueys all the time. A buddy of mine ( a copter crew chief) said those were the most powerful choppers in the world at the time. Even more the the giant Skycranes.
They've been around for over 50 years and looks like they're still the most powerful.
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Re: Military Tech / Science

Post by Isgrimnur » Mon Apr 02, 2018 2:46 pm

USS Little Rock
The Navy warship that was stuck on the St. Lawrence River for three months is now underway to its homeport at Naval Station Mayport, Fla., a Navy official told USNI News on Monday.

Littoral Combat Ship USS Little Rock (LCS-9) left on Saturday bound for the Atlantic Ocean after weathering the winter pier-side in Montreal, Lt. Cmdr. Courtney Hillson told USNI News.

“The ship was moored at the Port of Montreal until weather conditions improved and the St. Lawrence Seaway melted enough for the safe passage of the ship,” Hillson said.
...
The Littoral Combat Ship was stranded on the river in January. It was returning from its December commissioning ceremony in Buffalo, N.Y., where it entered the fleet next to its namesake, the decommissioned guided-missile cruiser USS Little Rock (CG-4).

Little Rock was late leaving Buffalo due to weather and had stopped in Montreal for a port visit and minor repairs.

“The ship was ready to depart Montreal, but the extreme cold, subsequent condition of the St. Lawrence Seaway and availability of icebreakers and support ships caused the delay,” Hillson told USNI News in January.

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Re: Military Tech / Science

Post by Daehawk » Mon Apr 02, 2018 3:40 pm

dbt1949 wrote:
Fri Feb 02, 2018 12:57 am
In Viet Nam I saw those Chinooks carrying Hueys all the time. A buddy of mine ( a copter crew chief) said those were the most powerful choppers in the world at the time. Even more the the giant Skycranes.
They've been around for over 50 years and looks like they're still the most powerful.
My nephew was a Blackhawk pilot and said those Chinooks were really fast too and that him and the Apaches could not keep pace with them and had to ask them to slow down. Online states the blackhawk and apache are a little faster so not sure where that comes from. Unless the Chinooks are not telling the true speed.

EDIT: NM looked at a better site and the Chinooks are faster by 20-30 mph.
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Re: Military Tech / Science

Post by dbt1949 » Tue Apr 03, 2018 5:17 pm

That reminds of when I was in the air force and working on B-52s. They told us that at high altitude the B-52 was more maneuverable than the fighters because of the larger wing area.
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Re: Military Tech / Science

Post by Daehawk » Tue Apr 03, 2018 6:03 pm

Did you see where they have plans to up engine the B52s?
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Re: Military Tech / Science

Post by dbt1949 » Tue Apr 03, 2018 6:47 pm

All the B-52s in service now are the "H" models which had the biggest engines of the models. (I worked on the D,E,F,and G models)
I supposed they're always looking for ways to improve them. I think the H models were the last built in the 60s.
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Re: Military Tech / Science

Post by Daehawk » Tue Apr 03, 2018 7:29 pm

I cant recall the stats they wanted other than a stated 20% - 30% fuel savings.
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Re: Military Tech / Science

Post by Kasey Chang » Tue Apr 03, 2018 11:12 pm

dbt1949 wrote:
Tue Apr 03, 2018 6:47 pm
All the B-52s in service now are the "H" models which had the biggest engines of the models. (I worked on the D,E,F,and G models)
I supposed they're always looking for ways to improve them. I think the H models were the last built in the 60s.
Hypothetically, if they replace the twin engines with a single large engine (similar to those in commercial jets) and wings with carbon fiber / ceramic alloy wings so they don't sag, it'd be a LOT more fuel efficient. But then, Dale Brown had been saying that for over a decade with the fictional MegaFortress. :)
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Re: Military Tech / Science

Post by Daehawk » Wed Apr 04, 2018 12:31 am

They have already rejected 4 engines and will be sticking with an 8 engine config.
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Re: Military Tech / Science

Post by xwraith » Mon Apr 09, 2018 11:23 am

Flush with cash, the Navy bores in on aviation readiness amid a crisis

This is a bit disturbing. Its buried in the article but less then a third of the Navy's F-18 E/Fs are actually operational

They are also going to write off 140 of the earlier models from Navy squadrons to be cannibalized for parts to supply the Marine squadrons. Consulting wikipedia, the Marine Corp operated roughly 270 of these as of 2015.
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Re: Military Tech / Science

Post by Daehawk » Mon Apr 09, 2018 11:41 am

It always strange for me to see stuff like that as to me the Hornets are the latest tech before the Raptors and F35.
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Re: Military Tech / Science

Post by xwraith » Mon Apr 09, 2018 2:19 pm

Yeah the E/F/Gs are basically a brand new plane with very little in common with the A/B/C/D version.

Honestly I think it would have been better to have picked the ASF Tomcat, which would have been basically the same thing (new airplane with an old designation) but with the F-14 as the template.
I forgot to call it "a box of pure malevolent evil, a purveyor of
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Gates let out a low whistle of admiration," but it's all those, too.
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Re: Military Tech / Science

Post by em2nought » Mon Apr 09, 2018 2:33 pm

I probably should have been a Jar Head, I dig cannibalization it appeals to my cheap side. First they took the Brits leftover Harriers and now it's the Navy's Hornets. :wub:
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Re: Military Tech / Science

Post by Isgrimnur » Wed Apr 18, 2018 12:49 pm

AGM-158B
Lockheed Martin’s stealthy new AGM-158B Joint Air-to-Surface Standoff Missile-Extended Range — JASSM-ER — made its debut on the raid on Syria on April 13.

A pair of U.S. Air Force Rockwell International B-1B Lancer strategic bombers launched 19 of the new air-launched cruise missiles against the Barzeh Research and Development Center near Damascus.
...
Indeed, the addition of the JASSM-ER made the aerial portion of the raid on the Syrian research lab possible. While the B-1B was a capable bomber initially when its was fielded in the 1980s, the aircraft is not survivable against modern air defenses and has to rely on standoff weapons when faced with a conventional foe.

In this case, while Russian forces in Syria did not attempt engage allied forces, the very presence of advanced Russian surface-to-air missile defenses such as the S-300V4 and the S-400 — which have a range of 250 nautical miles if equipped with the appropriate missiles — necessitated the use of the JASSM-ER’s standoff capability.

Thus, the addition of the JASSM-ER allowed a non-stealthy aircraft that would normally be unable to strike inside a so-called anti-access/area denial bubble to hit targets well inside such a zone. As such, a weapon such as the JASSM-ER breathes new life into conventional non-stealthy aircraft such as the B-1B or fourth-generation fighters such as the F-16 Fighting Falcon or F-15E Strike Eagle, which are unable to penetrate into heavily defended airspace.

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