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Naval Projects / Re: The FY53 & FY68 ASW Carriers
« Last post by TomS on Today at 12:44:56 pm »
Friedman also has some discussion of the FY53 CVE effort, but it's a lot more confusing, because there were several nearly concurrent alternative designs -- SCB 43, a Mariner derivative, and CVE 2/53.  The last came in at least five versions.  Some of the later could even handle jet fighters like the F4D.
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Naval Projects / Naval Group Smart OPS Room
« Last post by Triton on Today at 12:31:08 pm »
Naval Group unveiled the Smart OPS Room concept at Euronaval 2018.

https://youtu.be/kT9s6WtCAaU?t=3m47s
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Naval Projects / Re: The FY53 & FY68 ASW Carriers
« Last post by TomS on Today at 12:30:28 pm »
Late 1960s CVS options are discussed in more detail in Freidman's carrier book.  The FY68 ship is probably SCB 100.68, which was a roughly 53000 ton (full load) design with two C-13 catapults and about 50 aircraft (mostly S-2s and SH-3s).  She was a minimum Phantom carrier and could have accommodated 2 squadrons of light attack aircraft as a close support carrier instead of ASW (but magazines were small at only 500 tons so she could.not have done this for long without frequent UNREP). 

Self-defense was two Tartar launchers (probably Mk13).

Friedman has this as a 28-knot ship.  The 30-knot performance didn't come back until the last CVS design in 1967.
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Naval Projects / Re: Naval Group SMX-31 future submarine concept
« Last post by Triton on Today at 12:15:16 pm »
SMX-31 concept at 2:44

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Postwar Aircraft Projects / Re: VTOL On Demand Mobility
« Last post by Zootycoon on Today at 11:32:02 am »
Also no discussion on battery power density, C rating, L/D at 300kph cruise, weight of megawatt rated power electronics, weight of 300kph bird strike protection on airframe, weight of ice/rain/hail protection,  weight of crashworthness, crosswind limit, lightening strike protection, wing bending stiffness mismatch between wingborne & vertical flight.....to mention a few.

Fundamentally an e-vtol Jet has only a tiny fraction of the fan area of a helo or quad cop so has to compensate by giving the air much more acceleration, hence it needs very high rotational speed on the fans = megawatt power draw. And they claim this is really quiet;- Try overdriving the biggest electric garden leaf blower by a significant factor and then power up another eleven! yeah itís going to be real quiet.
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Naval Projects / The FY53 & FY68 ASW Carriers
« Last post by A Tentative Fleet Plan on Today at 11:30:41 am »
On page 367 of his book on US Destroyers (the 1982 Edition), Norman Friedman briefly mentions an ASW Carrier scheduled to be built in the FY68 budget. The only information provided was that it was expected to make 30 knots.

The proposed Carrier is also mentioned in The Small Aircraft Carrier: A reevaluation of the Sea Control Ship alongside the FY53 escort carrier, which was withdrawn to pay for the Saratoga.

Do any members have any information on these designs?
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Postwar Aircraft Projects / Re: VTOL On Demand Mobility
« Last post by elmayerle on Today at 10:55:16 am »
Indeed, many things that are "demonstrated" at the RC level do not scale up.
Even full scale vehicles can fly when carrying smaller amounts of batteries, and have very little range.
Ejector lift for vtol comes to mind.  Neither the XV-4A nor the XFV-12A ever managed to make the full-scale article work, despite successful sub-scale deomstrations.
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Naval Projects / Re: Naval Group SMX-31 future submarine concept
« Last post by GTX on Today at 09:45:46 am »
Very interesting.
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Yes, that seems to be an issue with the original drawings. The span and engine spacing match, top and front, but the fuselage width and canard span do not.  I've tweaked the drawing a bit more and it does come out as 67ft x 155ft so the basics are correct.
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Postwar Aircraft Projects / Re: VTOL On Demand Mobility
« Last post by TomcatViP on Today at 06:08:24 am »
Startup for dummies, rule One:
   - Take a problem
   - Simplify it
   - resolve the simplified case
   - Use marketing to claim you solved the problem
....
 
Rule 1bis:
 In case of failure:
   - restart
   - reload
   - repackage

....

Rules 1 (i_th iteration):
    - Insist!
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