Mitsubishi Ki-15 Karigane — Operating Instructions Manual & Photo Collection

三菱 九七式司令部偵察機 「雁」

The Mitsubishi Ki-15 (Allied codename "Babs", military designation Army Type 97 Command Reconnaissance Plane) was an all-metal, low-wing cantilever monoplane that, upon its introduction in 1937, was briefly the fastest production aircraft in the world. Engineered to outfly and outclimb contemporary interceptors, the Ki-15 represented a decisive leap in Japanese aeronautical engineering. This archival collection presents the original Operating Instructions Manual for the Ki-15-II Type 97 together with the Ki-15 Photographic Collection.

Aerodynamic Profile & Configuration

• Design Precedents: All-metal stressed-skin construction drawing on engineering principles similar to the Heinkel He 70 and Northrop Alpha.
• Wing Geometry: Rectangular centre section mated to two trapezoidal outer wing panels with a distinct positive dihedral for lateral stability.
• Drag Reduction: A highly streamlined fuselage narrowing linearly toward the tail, complemented by large aerodynamically clean wheel spats — balancing structural simplicity against drag constraints.

Engine Technical Notes & Variant Data

Handling & Stability Studies

• Longitudinal & Lateral Stability: The extended full-depth glass canopy smoothed airflow across the upper fuselage, providing exceptional lateral stability at low airspeeds.
• Flight Controls: Large-chord ailerons offered highly effective roll control down to near-stall velocities. High side-surface area facilitated advanced manoeuvres such as slow rolls with minimal top-rudder deflection.
• Handling Trade-offs: Initial flight testing noted an acute loss of airspeed during aggressive high-G turns. Forward field-of-view past the cowl was significantly obscured on the ground in the Ki-15-I configuration.

Performance Data Sheet

Document Manifest — Total Manuals: 2

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