Type 97 90mm (mortar) History

In an effort to reduce production costs and speed up delivery, the Type 97 mortar of 1937 was developed from the existing Type 94 design of 1935. The original Type 94 series was developed for Imperial Japanese Army forces prior to World War 2. It was of a smoothbore design and of quite conventional appearance with a base plate, bipod and smoothbore tube. Traverse and elevation controls were found at the hinge and support near the muzzle end of the weapon in the typical fashion. A recoil cylinder was affixed to the side of the tube to help absorb the violent forces inherent in mortar weapons of any kind. The type was first introduced in 1935 and was ranged out to 4,000 meters. Being of the 90mm caliber, the Type 94 was a large instrument requiring multiple crew and weighing in at 350lbs. It was ultimately fielded across all of the major Japanese fronts of World War 2 including China.

The major difference between the two designs was the Type 97's lack of the recoil mechanism found on the Type 94. It retained the same 90mm caliber, fired the same shell stocks and was ranged out to 3,800-4,000 meters as in the original. About 600 examples of the simplified Type 97 were reportedly produced and went on to see combat service with the Japanese Army in World War 2.

Type 97 90mm (mortar) Specification

ROLES

- In-Direct Fire / Siege / Area Effect

STRUCTURAL

Overall Length:

1,217 mm (47. 91 in)

Barrel Length:

1,217 mm (47. 91 in)

Weight (Unloaded):

381. 40 lb (173. 00 kg)

Sights:

Adjustable Elevation Mechanism

PERFORMANCE

Action:

Manual; Firing Pin at Base

Muzzle Velocity:

744 feet-per-second (227 meters-per-second)

Effective Range:

12,464 ft (3,799 m; 4,155 yd)

VARIANTS

Type 97 - Base Series Designation

Related stuff

1400 1514 1587 1765 1774 1775 1776 1782 1785 1786 1791 1797 1811 1813 1819 1840 1841 1842 1852 1853 1855 1856 1857 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1873 1874 1875 1877 1878 1885 1886 1888 1889 1895 1896 1897 1898 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
Contact