|Role||Flying boat fighter|
|Designer||Mario Castoldi (1888-1968)|
Design and development
In 1924, the Regia Marina (Italian Royal Navy) issued a requirement for a replacement for its Macchi M.7ter flying boat fighter. To compete with the SIAI S.58 for a production order as the replacement, Macchi company designer Mario Castoldi (1888-1968) developed the M.26. It was a wooden, single-seat, single-bay biplane armed with two fixed, forward-firing 7.7-millimeter (0.303-inch) Vickers machine guns. It had plywood and fabric skinning, and its wings were of equal span and unstaggered. The M.26's engine, a 221-kilowatt (296-brake horsepower) Hispano-Suiza HS 42 V8 driving a pusher propeller, was mounted on struts above the hull and below the upper wing. For an aircraft of its type, its aerodynamic design was very clean.
The M.26 was completed in 1924 and made its first flight that year, demonstrating good performance. Macchi built two prototypes, but the Regia Marina opted to save money by re-engining the Macchi M.7ter to extend its service life rather than purchase a new aircraft, and Macchi received no production orders for the M.26. However, a few years later Macchi based the design of its M.41 fighter on that of the M.26.
Data from Green, William, and Gordon Swanborough The Complete Book of Fighters: An Illustrated Encyclopedia of Every Fighter Aircraft Built and Flown, New York: SMITHMARK Publishers, 1994, ISBN 0-8317-3939-8
- Crew: one
- Length: 8.15 m (26 ft 8⅞ in)
- Wingspan: 9.20 m (30 ft 2¼ in)
- Height: 3.00 m (9 ft 10 in)
- Wing area: 26.00 m2 (279.87 ft2)
- Empty weight: 865 kg (1,907 lb)
- Gross weight: 1,195 kg (2,634 lb)
- Powerplant: 1 × Hispano-Suiza HS 42 V8 piston, 221 kW (296 hp)
- Maximum speed: 244 km/h (152 mph)
- Endurance: 2 hours 30 min
- Time to 4,000 m (13,123 ft): 12 min 18 sec
Aircraft of comparable role, configuration and era
- Green and Swanborough, pp. 357-358 and 527.
- Green and Swanborough, p. 358, attributes this decision to the Regia Aeronautica (Italian Royal Air Force), but on p. 527 attributes it to the Italian naval aviation branch.
- Green and Swanborough, p. 358.
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- Green, William, and Gordon Swanborough. The Complete Book of Fighters: An Illustrated Encyclopedia of Every Fighter Aircraft Built and Flown. New York: SMITHMARK Publishers, 1994. ISBN 0-8317-3939-8.