Training Flying Boat
H9A Training flying boat. The design was carried out from May to December 1939, the first copy took off and was tested in September 1940, however, according to the test results, it had many complaints. Landing and steering the boat itself turned out to be too difficult. In addition, the N9A behaved disgustingly on the water, buried its nose in the wave and was practically uncontrollable when maneuvering.
Structurally, the flying boat, which later received the name H9A, was a monoplane parasol with two Nakajima Kotobuki-41 Kai 2 air-cooled engines with a capacity of 710 hp each. The aircraft had a metal structure with plywood and fabric sheathing. The regular crew consisted of two pilots, an observer, a flight engineer and a radio operator. Also, space was provided for three more cadets. To train the shooters, it was planned to install 7.7-mm machine guns in the bow and middle of the boat. To practice anti-submarine missions, it was possible to suspend up to two 250 kg depth charges.
The aircraft had a tricycle retractable landing gear with a nose wheel, but strictly speaking, it could not be called an amphibian. The landing gear was too weak and not suitable for take-off and landing at airfields, but was used only to roll the aircraft out of the water onto a slip and lower it back into the water.
To solve the problems, the engines were lowered almost under the wing, the shape of the flaps was changed, and the wing area increased from 58.62 to 63.3 m . At the same time, the wing span increased from 21 to 24 meters. New Nakajima Kotobuki-42 engines of the same power, but more reliable, were also installed.
Aichi H9A were produced from 1942 to 1943, however, despite all the changes, the flight and operational data of the flying boat remained unsatisfactory and the "station wagon" did not work out of it. Therefore, it was decided to produce a new flying boat in a limited series only in a training version, especially since the production of heavy combat flying boats N6K and N8K, the crews of which were supposed to be trained on the N9A, was practically one-piece.
|Wing span, m
|Wing area, m²
|2 × PE Hakajima Kotobuki
||42 ore 43
||2 × 710
|Maximum speed, km/h
|Cruising speed, km/h
|Maximum rate of climb, m/min
|Service ceiling, m
|Service range, km
Armament. One 7.7 mm type 92 machine gun in the bow and middle of the boat; up to two 250 kg bombs.