D4Y Suisei Comet Judy | |
|---|---|
| 国 | 日本 |
| 役割 | ダイブ爆撃機 |
| 初飛行 | 1940年12月 |
| 構築 | 2038 |
D4Y水生彗星ジュディのフォトギャラリー、横須賀(横須賀?)●D4Y水生~「彗星」の海軍2型艦上車潜水爆撃機が日本海軍が運用しました。その連合国の報告名は「ジュディ」でした。D4Yは戦争の最速の潜水爆撃機の一つであり、その開発の遅れだけがそのサービスを妨げ、その前身である遅い固定ギアの愛知D3Aは意図したよりもはるかに長くサービスを維持しました。使用数が限られているにもかかわらず、D4Yの速度と範囲は貴重であり、タイプは偵察機としてだけでなく、神風ミッションのために成功して使用されました。
ソース： D4Y水生彗星ジュディウィキペディア
| D4Y Suisei Comet Judy | |
|---|---|
| カメラマン | 知りません |
| ローカライズ | 知りません |
| 写真 | 76 |
| Yokosuka D4Y Suisei ‘Judy’ Walk Around | |
|---|---|
| カメラマン | セス・ヘンドリックス |
| ローカライズ | 知りません |
| 写真 | 86 |
関連項目:
The Fastest Dive Bomber of the Pacific
ザ 横須賀D4Y水星 was a radical departure for Japanese naval aviation. While previous designs like the D3A “Val” relied on fixed gear and maneuverability, the Suisei was built for raw speed and streamlined efficiency. Inspired by the German Heinkel He 118, it featured an internal bomb bay and a liquid-cooled engine—a rarity for Japan. It was so fast that early models were used exclusively for high-speed reconnaissance, as they could outrun almost any Allied fighter they encountered in 1942. However, its lack of armor and self-sealing fuel tanks earned it a darker reputation among pilots as a “flying torch.”
| Attribute | Technical Specification (D4Y2 Model 12) |
|---|---|
| 役割 | Dive Bomber / Reconnaissance / Night Fighter |
| 乗組員 | 2 (Pilot and Navigator/Radio Operator) |
| エンジン | 1 × Aichi Atsuta AE1P (1,400 hp) — Licensed DB 601 |
| 最高速度 | 550 km/h (342 mph) at 5,250 m |
| Service Ceiling | 10,700 m (35,100 ft) |
| 武装 | 2 × 7.7mm Type 97 (Nose) & 1 × 7.92mm Type 1 (Rear) |
| Internal Bomb Bay | 1 × 500 kg (1,100 lb) bomb |
| External Stores | 2 × 30 kg or 60 kg bombs under the wings |
Design Engineering: The German Heart & Japanese Spirit
- Liquid-Cooled Gamble: The D4Y1 and D4Y2 used the Aichi Atsuta engine, a licensed version of the German Daimler-Benz DB 601. This allowed for a very narrow, aerodynamic nose but proved to be a maintenance nightmare in the humid, salt-air environments of carrier decks.
- Internal Bomb Bay: Unlike the SBD Dauntless or the “Val,” the Suisei kept its primary 500 kg bomb inside the fuselage. This reduced drag significantly, allowing it to maintain fighter-like speeds even when fully loaded.
- The Radial Pivot (D4Y3): Reliability issues with the liquid-cooled engine eventually led to the D4Y3 variant, which swapped the sleek nose for a bulky Mitsubishi Kinsei 62 radial engine. While it lost some of its aerodynamic elegance, the reliability and ease of maintenance skyrocketed.
- The Glasshouse Canopy: The crew sat under a long, multi-paneled greenhouse. The navigator/observer had a specialized downward-facing window to spot targets and assist in high-altitude reconnaissance missions.
Operational History: From Midway to the Divine Wind
- The Silent Scout: Two pre-production Suiseis were present at the Battle of Midway aboard the Soryu. They were used to scout for the American fleet, and their speed meant they could penetrate enemy airspace and return with Intel before interceptors could close the distance.
- The “Flying Torch”: Because weight was prioritized over protection, the Judy lacked self-sealing fuel tanks. A single burst of incendiary fire from a Hellcat or Corsair often resulted in the plane erupting into a massive fireball—the “Comet” living up to its name in a tragic way.
- Night Fighter Variant (D4Y2-S): Some Suiseis were converted into night fighters. They removed the bomb equipment and installed a 20mm Type 99 cannon behind the pilot, firing upward at an angle (similar to the German Schräge Musik) to hunt B-29 bombers.
- The Final Variant (D4Y4): Near the end of the war, the D4Y4 was produced as a dedicated “Special Attack” (Kamikaze) aircraft. It was stripped of its rear seat and carried a massive 800 kg bomb semi-recessed into the fuselage, often equipped with rocket boosters to accelerate its final dive.
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