×
Home Intro People Events Equipment Places Maps Books Photos Videos Other Reference FAQ About
     

World War II Database

D4Y file photo [3160]

D4Y Suisei

CountryJapan
ManufacturerYokosuka Naval Air Technical Arsenal
Primary RoleDive Bomber
Maiden Flight1 December 1940

Contributor:

ww2dbaseThe D4Y Suisei ("Comet") dive bombers had their origins from the German He 118 dive bomber design. The maiden flight in Dec 1940 and the subsequent test flights were highly successful, but it was later discovered that the wings were not strong enough to withstand the stresses of a dive. As a result, initial models sent to the front lines in 1942 were mainly only used for reconnaissance. The structural problems were addressed by Mar 1943, and the design was given to Aichi Kokuki KK for production. Because the performance of D4Y aircraft was so impressive, despite the lack of armor and self-sealing fuel tanks some of them were converted to night fighters later in the war, aimed at intercepting the high flying American B-29 bombers. The conversion, however, did not fare well against American fighter escorts. The final version of this design, dated around Feb 1945, was the D4Y4 Special Strike Bomber Model 43; they were designed to each carry a single 800-kg bomb for special attack missions. By the end of the war, 2,038 D4Y aircraft were produced, mostly by Aichi Kokuki KK.

ww2dbaseAllied codename for this model was "Judy".

ww2dbaseSource: Wikipedia.

Last Major Revision: Mar 2007

SPECIFICATIONS

D4Y2 Model 12
MachineryOne Aichi AE1P Atsuta 32 V-12 liquid-cooled engine rated at 1,400hp
Armament2x7.7mm forward Type 97 machine guns, 1x7.92mm rear Type 1 machine gun, 560kg of bombs
Span11.50 m
Length10.22 m
Height3.74 m
Wing Area23.60 m
Weight, Empty2,635 kg
Weight, Loaded3,835 kg
Weight, Maximum4,623 kg
Speed, Maximum580 km/h
Speed, Cruising425 km/h
Service Ceiling10,700 m
Range, Normal1,463 km
Range, Maximum3,602 km

D4Y1 Model 11
MachineryOne Aichi AE1A Atsuta 12 V-12 liquid-cooled engine rated at 1,200hp
Armament2x7.7mm forward Type 97 machine guns, 1x7.92mm rear Type 1 machine gun, 560kg of bombs
Span11.50 m
Length10.22 m
Height3.68 m
Wing Area23.60 m
Weight, Empty2,440 kg
Weight, Loaded3,650 kg
Weight, Maximum4,250 kg
Speed, Maximum552 km/h
Speed, Cruising425 km/h
Service Ceiling9,900 m
Range, Normal1,574 km
Range, Maximum3,889 km

D4Y3 Model 33
MachineryOne Mitsubishi MK8P Kinsei 62 14-cylinder air-cooled radial engine rated at 1,560hp
Armament2x7.7mm forward Type 97 machine guns, 1x7.92mm rear Type 1 machine gun, 560kg of bombs
Span11.50 m
Length10.22 m
Height3.74 m
Wing Area23.60 m
Weight, Empty2,501 kg
Weight, Loaded3,754 kg
Weight, Maximum4,657 kg
Speed, Maximum574 km/h
Speed, Cruising333 km/h
Service Ceiling10,500 m
Range, Normal1,518 km
Range, Maximum2,889 km

D4Y4 Model 43
MachineryOne Mitsubishi MK8P Kinsei 62 14-cylinder air-cooled radial engine rated at 1,560hp
Armament2x7.7mm Type 97 machine guns, 800kg of bombs
Span11.50 m
Length10.22 m
Height3.74 m
Wing Area23.60 m
Weight, Empty2,635 kg
Weight, Loaded4,542 kg
Weight, Maximum4,746 kg
Speed, Maximum563 km/h
Speed, Cruising370 km/h
Service Ceiling8,450 m
Range, Normal1,648 km
Range, Maximum2,593 km

Photographs

D4Y1 Suisei dive bomber being serviced, 1942A D4Y3 Model 33 dive bomber in flight, circa 1944
See all 28 photographs of D4Y Suisei Dive Bomber



Did you enjoy this article? Please consider supporting us on Patreon. Even $1 per month will go a long way! Thank you.

Share this article with your friends:

 Facebook
 Reddit
 Twitter

Stay updated with WW2DB:

 RSS Feeds




Visitor Submitted Comments

1. Commenter identity confirmed Bill says:
19 Feb 2009 03:03:41 PM

Yokosuka D4Y Suisei (Comet) code word Judy by the Allies. The Judy was armed with two 7.7mm machine-guns in the upper fuselage decking and one flexable rear-firing 7.92mm Type 1 machine-gun manned by the radio operator. Able to carry for short missions a max. warload of 1,234 lbs. Powered by a liquid-cooled engine. Another version was powered by a air-cooled engine. Judy was also used as a night-fighter armed with a fuselage-mounted oblique-firing 20mm cannon Type 99 Model 2 cannon. Lacking radar and having a slow climbing speed, the judy was an ineffective night-fighter. Like most japanese aircraft the Judy was used in Kamikaze attacks. Total Production: 2,033. On 15 August,1945 The last sortie of the Suisei was made when Admiral Ugaki led eleven aircraft in a final, but inconclusive kamikaze attack off Okinawa.
2. Commenter identity confirmed Bill says:
19 Feb 2009 03:33:46 PM

Where are they now? A "Surviving Judy" that was recovered from Yap Island, in the Carolines was extensively restored at Kisarazu A.B. Japan in 1980. The restoration is a mix of D4Y2 parts on a basic D4Y1 airframe. The aircraft now resides at the Yasukuni Shrine, Tokyo. Tail number is of the 523rd. Kokutai.
3. Commenter identity confirmed Bill says:
19 Feb 2009 03:44:54 PM

Another "Surviving Judy" Model D4Y Some basic components or needing major restoration location: Museum of Flying, Santa Monica, California U.S.A.
4. Anonymous says:
2 Jul 2011 02:07:16 PM

In the latest issue of Air Classics, I was excited to read that a Judy is in the midst of restoration to flying status at Planes of Fame Air Museum at Chino Airport, in CA. There has been a lot of work done and they project that the completion date will be next year 2012. I can't wait to see it fly

All visitor submitted comments are opinions of those making the submissions and do not reflect views of WW2DB.

Posting Your Comments on this Topic

Your Name
Your Email
 Your email will not be published
Comment Type
Your Comments
Security Code
 

 

Note: We hope that visitor conversations at WW2DB will be constructive and thought-provoking. Please refrain from using strong language. HTML tags are not allowed. Your IP address will be tracked even if you remain anonymous. WW2DB site administrators reserve the right to moderate, censor, and/or remove any comment. All comment submissions will become the property of WW2DB.

Change View
Desktop View

Search WW2DB & Partner Sites
D4Y Suisei Dive Bomber Photo Gallery
D4Y1 Suisei dive bomber being serviced, 1942A D4Y3 Model 33 dive bomber in flight, circa 1944
See all 28 photographs of D4Y Suisei Dive Bomber


Famous WW2 Quote
"I have returned. By the grace of Almighty God, our forces stand again on Philippine soil."

General Douglas MacArthur at Leyte, 17 Oct 1944