06-13-2019, 02:44 PM | #61 | |
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Join Date: Aug 2004
Location: Sumter, SC
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Re: Approaching TL9?
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Similarly the first plastic appeared in 1856 and was used a replacement for billiard balls in the late 19th century. Because of the type of plastic they were made of the billiards balls on occasion could explode. Plastic in GURPS is said to be TL7. Yeh... |
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06-13-2019, 02:55 PM | #62 | |
Join Date: Dec 2007
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Re: Approaching TL9?
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06-13-2019, 02:58 PM | #63 |
Join Date: Jul 2008
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Re: Approaching TL9?
I don't think I'd agree that combustible-case is 'essentially caseless'. It gives up some of the benefits associated with cased rounds, but also retains some (particularly, protection of the propellant and some breach sealing) at the expense of giving up some of the benefits of entirely caseless ammo (notably, eliminating ejected casings entirely).
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06-13-2019, 03:06 PM | #64 | |
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Join Date: Sep 2004
Location: Southeast NC
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Re: Approaching TL9?
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06-13-2019, 03:46 PM | #65 | |
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Join Date: Sep 2004
Location: Southeast NC
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Re: Approaching TL9?
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The aircraft first saw use in the RAF as the North American Mustang Mk I, then it was adopted by the USAAC as the P-51 Apache primarily but not entirely as a paperwork mechanism to allow them to be transferred to Britain under Lend-Lease (Britain was buying directly from NAA as a private purchase, Lend-Lease required the US military to serve as middleman). When the Lend-Lease contract for the Mustang ran out of funds, the USAAF took over all remaining aircraft and wanted the aircraft to stay in production for future US adoption, but couldn't get a fighter contract worked up under current appropriations. NAA proposed adding dive brakes and redesignating it to take advantage of an unused dive bomber contract. The A-36 was the resulting aircraft. In the meantime, the British had successfully experimented with putting the Merlin in the aircraft they had received, which went into production as the P-51B (the first production model, other than the A-36, not built primarily for British use). The original US name (Apache) was quickly dropped in favor of the RAF name (Mustang). The first first US use of the Mustang (aside from testing) was the F-6A tactical reconnaissance aircraft.
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RyanW - Actually one normal sized guy in three tiny trenchcoats. |
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06-13-2019, 05:05 PM | #66 | |
On Notice
Join Date: Aug 2004
Location: Sumter, SC
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Re: Approaching TL9?
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Early Rail (TL5). Normal operational speed is 30-40 mph; averages 200-800 miles per day. A standard railcar carries 20 tons or 2,800 cubic feet. Price per passenger or per ton of cargo is about $1 per mile. Mature Rail (TL6-7). Normal operational speed is 50-75 mph; averages 300-1,200 miles per day. A standard railcar carries 100 tons or 5,200 cubic feet. Price per passenger or per ton of cargo is $0.10 per mile. High-Speed Passenger Rail (TL8). Normal operational speed is approximately 150 mph; routes are seldom longer than a few hundred miles. Price per passenger is $0.33 per mile. Transcontinental railway is likely being used as a shorthand for "Mature Rail" Last edited by maximara; 06-13-2019 at 05:13 PM. |
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06-13-2019, 06:51 PM | #67 |
Join Date: Aug 2004
Location: Wellington, NZ
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Re: Approaching TL9?
But that was rapidly replaced by the Merlin, or a licensed-built version thereof. Also, the rest of the aircraft was very modern - modern materials, modern wing cross-section.
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Rupert Boleyn "A pessimist is an optimist with a sense of history." |
06-13-2019, 06:56 PM | #68 | ||
Join Date: Aug 2004
Location: Wellington, NZ
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Re: Approaching TL9?
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So, yes, caseless rounds do work perfectly well. Yes, they have drawbacks, but so do cased rounds. Caseless rounds look 'bad' in comparison because we're used to cased rounds. Quote:
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06-13-2019, 06:57 PM | #69 |
Join Date: Aug 2004
Location: Wellington, NZ
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Re: Approaching TL9?
Many big naval guns were caseless, despite the risks from fairly exposed powder charges.
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Rupert Boleyn "A pessimist is an optimist with a sense of history." |
06-13-2019, 07:00 PM | #70 | |
Join Date: Dec 2007
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Re: Approaching TL9?
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Tags |
earth, humanity, real world, tech level, tl9 |
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