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The Pentagon Is Using the SR-71's Legendary Engine for ... Something

3년 전 제출됨

Pratt & Whitney started working on the Metacomet two years ago, according to Aviation Week & Space Technology. The company’s Gatorworks division is dusting off its work on the J58, which allowed the SR-71 to reach a record-breaking Mach 3.2, with the hopes of using it to help create a new engine capable of propelling a new vehicle even faster. (www.popularmechanics.com) 기타...

sparkie624

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travistx 3년 전 21

I used to really enjoy Popular Mechanics. More recently, though, it seems to be nothing more than low information clickbait.

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Ric Wernicke 3년 전 7

Like many magazines that were a great read monthly, it is now run by a crew of New York metro's who don't own a house or car, slurp latte's with a pinky extended, and look down their nose at the "carbon footprint" of anyone who dares to fly anywhere. It is a shame. I have not found any properly curated source of similar information online.

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bentwing60 3년 전 2

Hagerty drivers club newsletter is good for some old, muscle car, any kind of old car reading and it's free.

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Tim Dyck 3년 전 2

I used to wait patiently for Pop Mechanics and Pop Science to hit the shelves. Now I could care less. My interest in science and engineering’s hasn’t become less just those magazines are not what they used to be.

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mbazell 3년 전 14

I think we should re-activate the SR-71 just to annoy China, USSR and Iran.

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Dean Billing 3년 전 10

I invite the author(s) of this article to read the SR-71 Pilot's Manual or Wikipedia. Everything they wrote about the J58 operating in an SR-71 is wrong. No turbojet engine can operate on supersonic airflow. Every supersonic aircraft has a conversion inlet that translates supersonic airflow to subsonic airflow before it enters the compressor section of the engine.

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Kevin Wild 3년 전 2

Pop Mech is a BLOCKED link to a paid service. Please don't use links to paid articles. Thanks!

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Tim Dyck 3년 전 3

The link worked fine for me.

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lynx318 3년 전 0

Link from this page works fine, link in article to more on J58 goes to a subscribe page instead of an article. This might be what he means.

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Tim Dyck 3년 전 1

I just clicked it and it worked.

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Perry Rotzell 3년 전 1

It's a good job those engines will be employed in some fashion. Coincidentally, I'm reading Paul Crickmore's 4th edition treatise on the Blackbird series of aircraft. He notes, that by 1991, P&W and the USAF had stockpiled enough J-58s to facilitate flying the aircraft "well into the 21st Century". Of course, with the SR-71's grotesquely early retirement just 2 years later, those valuable and expensive engines have been sitting in storage collecting dust! Bravo to P&W for using these taxpayer purchased assets!

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lynx318 3년 전 1

Maybe developing a horizontal, reusable carry vehicle for suborbital rocket launches.

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Kevin Wild 3년 전 1

Link to SR71 article goes to BLOCKED article on Pop Mech. Please don't link to paid articles. Thanks.

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Fred Ogden 3년 전 1

The ability to go faster equates to higher cruising altitude. At Mach 5, the engine could ingest enough O2 from atmosphere to stay lit at a higher altitude, where the air density is even lower. That helps to reduce drag. Rather than the SR-71's 80,000 ft cruise, a Mach 5 vehicle might cruise at something like 90,000 - 95,000 ft.

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Jim Ward 3년 전 1

Oh ,The engines are being installed for stealth speed boats.
A friend of mine works for Pratt Skunk Works and gave me the scoop. Don’t tell anyone. Thanks.

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lynx318 3년 전 1

(>ლ)

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Gary Stemen 3년 전 -1

Mach 3/4 is scarey considering the heat generated by friction at mach 2+ on the SR71....

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bentwing60 3년 전 9

Ummm, Concorde regularly operated at mach 2, the SR71 at mach 3.2 tops, as stated in the header.Operating limitations are not meant to be "scarey", they are meant to be adhered to as design limitations.

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David Kay 3년 전 -1

Bad mouthing Popular Mechanics instead of discussing the J58? You guys need to get a life.

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Kevin Wild 3년 전 5

It's called feedback, enjoy your paid articles!

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Jim Ward 3년 전 -1

Oh ,The engines are being installed for stealth speed boats.
A friend of mine works for Pratt Skunk Works and gave me the scoop. Don’t tell anyone. Thanks.

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The Pentagon Is Using the SR-71's Legendary Engine for ... Something

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