en.wikipedia.org/wiki/Yokosuka_MXY-7_Ohka
3 corrections found
only approximately 20 of the experimental Tsu-11 engines are known to have been produced.
The Smithsonian records say only three Tsu-11 engines were built, not about 20.
Full reasoning
The article's production figure for the Tsu-11 is contradicted by Smithsonian records.
The National Air and Space Museum's page for the Tsu-11 engine says "Three engines were built". Its separate page for the Ohka Model 22 repeats the same point, explaining that only three Tsu-11 engines were built, which is why most Model 22 airframes remained incomplete.
Those two museum records directly contradict the claim that approximately 20 experimental Tsu-11 engines were produced.
2 sources
- Air Technical Arsenal Tsu-11 Campini-type engine | National Air and Space Museum
Three engines were built, and one flight was made in July 1945, when an Ohka 22 was launched from a Yokosuka P1Y Ginga (Allied Code Name Frances).
- Kugisho MXY7 Ohka (Cherry Blossom) 22 | National Air and Space Museum
Kugisho finished 50 Model 22s while production shifted to underground factories. Only three Tsu-11 engines were built, so most of the airframes remained incomplete and the war ended before any Ohka 22s saw combat.
Model 22 in storage at the Steven F. Udvar-Hazy Center of the National Air and Space Museum in Chantilly, Virginia, the only surviving Model 22.
The Smithsonian currently lists the surviving Ohka Model 22 as on display in Washington, D.C., not in storage at the Udvar-Hazy Center.
Full reasoning
This location/status is contradicted by the Smithsonian's current collection record for the surviving Ohka Model 22.
The National Air and Space Museum page for Kugisho MXY7 Ohka (Cherry Blossom) 22 says the object's Display Status is "on display in Jay I. Kislak World War II in the Air at the National Air and Space Museum in Washington, DC." That means it is not currently "in storage" at the Steven F. Udvar-Hazy Center in Chantilly.
The page also identifies this object as the surviving Ohka 22, so the article's storage/location statement is outdated or incorrect.
1 source
- Kugisho MXY7 Ohka (Cherry Blossom) 22 | National Air and Space Museum
Display Status This object is on display in Jay I. Kislak World War II in the Air at the National Air and Space Museum in Washington, DC.
21 March 1944 (unpowered)
Official museum sources place the Ohka's unpowered prototype testing in October 1944, not March 21, 1944.
Full reasoning
The unpowered first-flight date in the infobox is inconsistent with authoritative museum records.
The Royal Air Force Museum's collection entry for the Yokosuka MXY7 Ohka states that "Unpowered prototypes were tested in October 1944." That matches the article's own body text, which says glide testing began in October 1944, and contradicts the infobox entry giving 21 March 1944 for the unpowered first flight.
Because the official RAF Museum record dates unpowered testing to October 1944, the infobox's 21 March 1944 date is incorrect.
1 source
- Yokosuka MXY7 Ohka - RAF Museum
Unpowered prototypes were tested in October 1944. 755 were built by March 1945.