https://en.wikipedia.org/wiki/Lun-class_ekranoplan

Only one built, and it’s still on the shore of the Caspian sea:

General characteristics

  • Crew: 15 (6 officers, 9 enlisted)
  • Capacity: 137 t (302,000 lb)
  • Length: 73.8 m (242 ft 2 in)
  • Wingspan: 44 m (144 ft 4 in)
  • Height: 19.2 m (63 ft 0 in)
  • Wing area: 550 m2 (5,900 sq ft)
  • Empty weight: 286,000 kg (630,522 lb)
  • Max takeoff weight: 380,000 kg (837,757 lb)
  • Powerplant: 8 × Kuznetsov NK-87 turbofans, 127.4 kN (28,600 lbf) thrust each

Performance

  • Maximum speed: 550 km/h (340 mph, 300 kn)
  • Cruise speed: 450 km/h (280 mph, 240 kn) at 2.5 m (8 ft)
  • Range: 2,000 km (1,200 mi, 1,100 nmi)
  • Service ceiling: 5 m (16 ft) in ground effect

Armament

  • Guns: two 23mm Pl-23 cannon in a twin tail turret and two 23mm Pl-23 cannon in a twin turret under forward missile tubes
  • Missiles: six launchers for P-270 Moskit Sunburn antiship missiles
    • Zron@lemmy.worldEnglish
      41·
      3 months ago

      At 300 miles per hour top speed, I think you’ll just hear the jet engines and then either see a gray blur or die.

      Unless you happen to be behind a decent sized hill, then you’ll just go deaf and wonder what the fuck that noise was. A 5 meter service ceiling is impressively low for a craft that is 19 meters tall.

      • HappycamperNZ@lemmy.worldEnglish
        4·
        3 months ago

        I just found it funny they put service ceiling in the specs. Look at other aircraft

        42,000m

        38,000m

        …

        5

        • Zron@lemmy.worldEnglish
          2·
          3 months ago

          It is technically an aircraft.

          I just can’t think of any use for this thing that an actual airplane or conventional truck couldn’t accomplish. A truck can transport equipment and personnel over long distances. And an airplane can provide much better close air support by overflying the enemy.

          But giant hovercraft is really cool.

          • Everythingispenguins@lemmy.worldEnglish
            4·
            3 months ago

            It was preliminary conceived as a platform for anti ship missiles. Because it was so low, it could get within 10 to 20 miles before showing up on ship based radar. Basically think of it as a ship but with the speed of an aircraft. When the Americans first photographed it with a satellite they called it the Caspian sea monster. They had no idea what it could do and were genuinely worried at first.

            Ultimately it proved too hard to fly. It had to be hand flown with a vertical margin of error of just a meter or two.

            • Zron@lemmy.worldEnglish
              2·
              3 months ago

              I can’t imagine how sweaty my hands would be having to hand fly that monster over water.

              One good gust of wind and now you’re trying to swim at 300 miles an hour

              • Everythingispenguins@lemmy.worldEnglish
                2·
                3 months ago

                Yeah I was watching a video about these things a little bit ago. If I am remembering correctly in rough weather the pilots had to switch every 20-30 minutes due to exhaustion.

          • alcoholicorn@lemmy.mlEnglish
            1·
            3 months ago

            It gets better fuel efficiency than an airplane and goes 5x faster than a truck. Essentially you’re sacrificing the ability to go high for a more efficient way of staying off the ground.

            Iran uses modern tiny ones. Presumably they’re cheaper than helicoptors or planes that could carry a similar payload.