#NEOM aka “#TheLine”, #SaudiArabia will take 10 years to build, 105-mile-long linear city for 9 million people. No cars. Super-high-speed train to connect end-to-end in 20 minutes. Mirrored exterior. 500 meters tall. My thoughts follow... #Future
2/ #CitiesSkylines #STEM Don't get me wrong. I love technology and was fascinated by giant space stations in the sky as a kid. But... The first problem I see is there's no existing anchor town or organic reason for #NEOM to exist where it is to be built.
3/ #Ghosts People don't like moving 1,000 miles to an empty city where there is no one and especially no one they already know. The city is actually a series of modules / mini-cities. I'd build one of these around a metro stop in Riyadh and see if anyone moves in.
4/ #Maps #Cities #Technology - The mirror is a great idea for LEED, sensitivity to nature. But a 105 mile / 170 km city in the shape of a giant, mirrored, wall would prevent animals, many birds (?), Bedouins, the wind, etc., from their natural migrations and movements.
5/ I don't know how many people outside New York, Tokyo, Shanghai, like riding an elevator to go outside. #NEOM's marketing says you're then at one with nature, but a mountainous desert nature would get old. You'd still have to fly to visit family, etc.

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More from @USAS_WW1

Oct 28
#avgeek #planespotting #USNavy #USAF #USMC: Douglas SBD Dauntless / A-24 Banshee carrier-borne and land-based dive-bomber saw extensive action in the Pacific. At Midway, SBDs damaged the IJN carriers Akagi, Kaga, Soryu and Hiryu, leading to loss of all four. 1/ TY @Sylvia70485099 ImageImageImageImage
2/ The SBD ("Scout Bomber Douglas") first flew in 1940. Recognition: circular perforated dive brakes; wings: compact, sturdy, non-folding. Crew: 2. 5,936 built, 1940–1944. Used by USA, France and New Zealand. Let’s visit the different versions and check out details… #Models ImageImageImageImage
3/ SBD-1: 1,000 hp Wright R-1820-32 Cyclone; 6-volt electrical system. 2 x .50 cal guns on upper cowling + 1 x .30 cal rear-facing on semi-circular mount. 57 built, all in 1940. USMC only. Images: aviation-history.com/douglas/sbd.ht…⬅️. ImageImageImage
Read 12 tweets
Oct 26
#USNavy #shipspotting #WW2 #OTD CV-8 USS Hornet sunk. Oct. 20, 1941: commissioned. Apr. 18, 1942: Doolittle Raid. Jun. 4-6, 1942: Battle of Midway. Aug.–Oct. 1942: Solomon Islands. Oct. 26, 1942: Battle of the Santa Cruz Islands. Mortally wounded. Oct. 27, 1942: 01:35: sinks. 1/ ImageImageImageImage
@HornetMuseum @Rich_Ships @slottsstaden @DramaWarship @WorldofWarships @WarshipPorn @militaryhistori @BattleshipNJ @GavicWayne @USNavyCNO 2/ CV-8 Hornet was a Yorktown-class aircraft carrier. The class was CV-5 Yorktown↖️, CV-6 Enterprise↗️, and CV-8 Hornet↙️. CV-7 USS Wasp↘️was an 85' shorter version of the Yorktown-class. Sadly, all but Enterprise (which survived WW2) were sunk June to October 1942! ImageImageImageImage
@HornetMuseum @Rich_Ships @slottsstaden @DramaWarship @WorldofWarships @WarshipPorn @militaryhistori @BattleshipNJ @GavicWayne @USNavyCNO 3/ Surprisingly, Hornet displaced only 20,000 tons standard, 25,500 full load. Specs: 824’ 9” l x 114’ b x 28’ d; 120,000 shp; 32.5 knots; crew: 2,919; 72 aircraft; 3 elevators; 3 catapults; armor: 4” deck; 2.5”-4” belt. Most carriers had little armor; Hornet was no exception. ImageImageImageImage
Read 4 tweets
Oct 22
So, in your opinion, which is the most iconic WW2 fighter plane and by which criteria? Here are four for starters. You can suggest others too... #avgeek #aviation #airplanes #WW2 ImageImageImageImage
2/ Here are a few others to join the Mitsubishi Zero, Me-262, Spitfire and P-51 I showed above. Thus voila the Dewoitine 520, FW-190, Yakovlev Yak-3, Hawker Hurricane. ImageImageImageImage
3/ So many great choices... ImageImageImageImage
Read 4 tweets
Oct 22
#avgeek #aviation #RAF #USAF #P51 - The P-51 Mustang was built to a British spec for a new RAF fighter and later served in the USAAF. Let's tour the fighter, from its prototype NA-73X to P-51D, etc., its development and different versions... @kadonkey @Sylvia70485099 1/
2/ The British Purchasing Commission asked North American to license-build Curtiss P-40 Warhawks for the #RAF. Instead, North American designed a more modern NA-73X prototype fighter with the same 1,090 hp Allison V-1710 engine. It first flew September 9, 1940.
@AlexanderZPain @MartinKoenigsb2 @kingdomman66 @majestic_air @curlyboy1975 @deecanadian 3/ It was 25 mph faster than the P-40. Britain bought 320 NA-73 + 300 NA-83 (fishtail engine exhausts) and christened them Mustang I. This new RAF type was used for recon and fighter-bombing. It had a 12' wide landing track, simple production, etc. 4 x .50 cal; 4 x .30 cal.
Read 7 tweets
Oct 22
#HurricaneRoslyn #PuertoVallarta #HurricaneSeason #Hurricane - Hurricane Roslyn is a powerful Category 3 hurricane. NATIONAL HURRICANE CENTER has a Hurricane Warning for El Roblito - Puerto Vallarta - Playa Pérula. Mazatlán to Manzanillo under Hurricane Watch. Please be careful!
#HurricaneRoslyn #PuertoVallarta #HurricaneSeason #Hurricane - Astonishingly, this track shows Puerto Vallarta just dodging Roslyn though how much difference being outside the blue line will make, I don't know. It looks like Yelapa is just inside the "hit" zone. Photos from 2020.
Read 5 tweets
Oct 20
#ships #navy #WWII #USNavy - Let's tour IJN Yamato, WWII's most impressive battleship.↖️Yamato on trials, 1941. ↗️Yamato's original config from history.navy.mil/our-collection….↙️Yamato after 1944-1945 refit from Tamiya. ↘️ Yamato's death, April 7, 1945. 1/ ImageImageImageImage
2/ Yamato, her sisters Musashi and Shinano (completed* as an aircraft carrier) were WWII's three mightiest vessels. Yamato's main armament was 9 x 18.1"/45 guns. 45 calibers = 67' 10" long! Here is a stern view focused on Yamato's #3 turret on Sept. 20, 1941 during construction. Image
3/ Yamato's secondary armament was 4 x triple 15.5 cm (6.1")/60 guns arranged in a diamond formation: front, back and one per side. They were removed from Japan's Mogami-class↘ naval-encyclopedia.com/ww2/japan/moga… light cruisers when the Mogamis were upgraded to new twin 8" gun turrets. ImageImageImageImage
Read 20 tweets

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