Heavy Metal

I don't know if it will replace the B-52, re-engine is planned and I believe they want to keep it service until 2052 or 2056. Will the B-21 last that long?
B-52 replacement will depend upon how long the B-21 will last, and how much it will cost to keep them flying. Stealth material maintenance costs are very high with the B-2.
 
Plans for Pentagon's Future Flying Bomb Truck Begin to Take Shape | Military.com

US Air Force eyes September for next phase of re-engining B-52 bombers

‘Deterrence the American way’: The new B-21 bomber debuts

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first sources say B-52 getting re-engined, (plus avionic upgrades) basically, perhaps, becoming a "bomb truck" into the 21st century.

second source says B-21 "may" replace B-52 mid 21st century.

I may have overstated/conflated the probability of B21 replacing B52 as the "upgraded" B52-J (a "B.U.F.F.") will apparently be a bada** for another 40 years.

which one accurate? both? neither?

:thumbsup:
 
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Lifted from Facebook:

On January 6, 1969, CN withdrew its revolutionary new Turbo Trains from operation less than a month after their debut.

They were returned to the manufacturer, United Aircraft, for design and mechanical modifications and would remain there until their return to service in January 1970.

A Turbo went on to establish the Canadian land speed record of 140.6 mph (226 km/h) in 1976. They provided fast, reliable transportation between Toronto and Montreal until 1982. Unfortunately, not one of the Turbo Trains was preserved in a museum—all of them were scrapped.

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Camelback locomotive - Wikipedia
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The Camelback design was rare in itself, used primarily by Northeastern anthracite roads to burn culm (anthracite coal waste). Even rarer was the Mallet Camelback, as seen here in Erie Railroad 0-8-8-0 #2601 at Port Jervis, New York in 1911 (note the massive Wootten firebox!). The Erie listed its three (#2600-2602), built by Baldwin in 1907, as Class L-1. Unofficially they were known as the Angus Type. In any event, the L-1's never produced the desired power expected and were rebuilt by Baldwin in 1921 as 2-8-8-2s featuring the cab in the conventional location. Unfortunately, they saw relatively short careers even after the conversion and were scrapped by late 1930.
 
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Indeed, it was, but the military results were certainly questionable and probably the main purpose of such a gun was just propaganda. Germany was prohibited to have guns greater than 150mm by the Treaty of Versailles and having such a formidable weapon was a matter of prestige.

It was a marvel of engineering - caliber of 800mm, weight of 1350 tons, effective range of more than 40 km.

But it also required 106 railroad cars to transport, crew of 500 to operate (and 4000 men to assemble) and the total cost of two guns was equivalent to 250 150mm 15cm sFH 18 guns.

In Sevastopol it supposedly fired 48 rounds, destroyed and damaged a few forts including an ammunition magazine (that was the most successful shot).
 

Zvezda M503​

The methanol version as seen in 'Dragon Fire" over 8000 hp
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Zvezda M503 (built at AO Zvezda at St Petersburg) is a maritime 7 bank, 42 cylinder diesel radial engine built in the 1970s by the Soviet Union. Its primary use was in Soviet missile boats that used three of these engines.
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Zvezda M503​

The methanol version as seen in 'Dragon Fire" over 8000 hp
View attachment 638755View attachment 638756 Zvezda M503 (built at AO Zvezda at St Petersburg) is a maritime 7 bank, 42 cylinder diesel radial engine built in the 1970s by the Soviet Union. Its primary use was in Soviet missile boats that used three of these engines.
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Zvezda M503 - Wikipedia

9 yrs. ago, but that's entertainment!

seems like he coulda dragged that sled to Russia (from wherever in Germany this thing was showin' off :))

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Heavy Metal

Last Friday Lockheed Martin rolls out the X-59.

NASA and Lockheed, working together, to develop an SST without the sonic boom. In theory, then you an fly an SST over land (which we couldnt do with the Concorde - noise pollution).

Clearly, a fair ways to go before a commercial aircraft (at least a decade away I read if successful) with these "x-plane" design ideas would be ready.

sources: Quesst, NASA, Lockheed Martin Reveal X-59 Quiet Supersonic Aircraft - NASA,

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"The X-59 is at the center of NASA’s Quest mission, which focuses on providing data to help regulators reconsider rules that prohibit commercial supersonic flight over land.

For 50 years, the U.S. and other nations have prohibited such flights because of the disturbance caused by loud, startling sonic booms on the communities below.

The X-59, an experimental airplane, not a prototype (here's the difference), is expected to fly at 1.4 times the speed of sound, or 925 mph.


At 99.7 feet long and 29.5 feet wide, the aircraft’s shape and the technological advancements it houses will make quiet supersonic flight possible.

This design and will break up the shock waves that would ordinarily result in a supersonic aircraft causing a sonic boom.

The aircraft is set to take off for the first time later this year."
 
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