List of Forlanini airships
This is a complete list of Forlanini airships designed and built by the Italian pioneer Enrico Forlanini from 1900 to 1931 (posthumously).[1] These, like the German Groß-Basenach semi-rigid airships, were the first to have the gondola attached to the envelope, to reduce air resistance.
F.1 Leonardo da Vinci
    
- Designed: 1900-1901[2]
 - Maiden flight: 2 July 1909
 - Flights: 38, total distance 850 km.
 - Longest duration: 90 minutes
 - Length: 40 metres
 - Volume: 3,265 cubic metres
 - Propulsion: One Antoinette engine of 40 HP
 - Maximum speed: 52 km/h
 
Construction started in 1900 collaboration with Cesare del Fabbro. Its first flight in 1909 was one year after the first Italian semi-rigid flight by Gaetano Arturo Crocco. Like all the Forlanini airships, except the Omnia Dir, the empennage comprised groups of multiple planes at the poop and at the tail.[3]
F.2 Città di Milano
    
- Maiden flight: 17 August 1913[3][4]
 - Flights: 43[3]
 - Length: 72 metres[1]
 - Volume: 12,000 cubic metres[3]
 - Gas cells: 12[3]
 - Propulsion: Two Isotta Fraschini engines of 80 HP each[1]
 - Maximum speed: 70 km/h[1]
 - Flight ceiling: 2400 metres[3]
 - Useful payload: 5 tonne[3]
 - Owner: Royal Italian Army (Regio Esercito)
 - Fate: 9 April 1914 emergency landing during storm, then damaged by trees and terrain while moored. While attempting to deflate gas cells, caught fire and destroyed.[1]
 
F.2's gondola was divided in three compartments: the command cabin, passenger cabin, and machine room. For safety all the material was treated with a fire suppressant and the envelope was double-skinned.[3]
F.3 Città di Milano II
    
    
F.4
    
- Volume: 15,000 cubic metres[5]
 - Built: 1915[5][6]
 - Owner: Marina Italiana
 
F.5
    
- Built: 1917[2]
 - Volume: 17,783 cubic metres[5][7]
 - Length: 300 feet (91 m)[2]
 - Maximum width: 66 feet (20 m)[2]
 - Propulsion: Two FIAT S.76-A engines of 350 HP each[5]
 - Flight ceiling: 20,000 feet (6,100 m)[2]
 - Gas cells: 12[2]
 - Payload: 22,000 pounds (10,000 kg)[8]
 - Crew: 5: commander, two officers, two mechanics[2]
 - Owner: Royal Italian Army
 - Fate: military operations, decommissioned 6 February 1918
 
F.6
    
- Built: 1918
 - Volume: 15,000 cubic metres[5]
 - Propulsion: Four Isotta Fraschini IV-B engines of 180 HP each
 - Owner: Royal Italian Army (Regio Esercito)
 - Fate: one single military mission before the armistice
 
Omnia Dir
    
- Built: 1931
 - Volume: 4,000 cubic metres
 - Propulsion: One Isotta Fraschini of 150 HP
 - Note: Used two groups of five jets of compressed air for maneuvering, one at each end
 
See also
    
- Enrico Forlanini
 - Airships of Italy
 - Italian military aircraft 1910-1919
 
Notes
    
- Lapini, Gian Luca
 - New York Times
 - editors of Italian wikipedia
 - New York Times has 1912.#Tim
 - Ligugnana, Sandro
 - New York Times wrote F-4 appeared in 1916.#Tim
 - New York Times claimed 700,000 cubic feet (20,000 m3).#Tim
 - New York Times wrote payload reduces to 13,000 pounds (5,900 kg) at 7,000 feet (2,100 m) and 8,000 pounds (3,600 kg) at 13,000 feet (4,000 m).#Tim
 
References
    
- aerostati.it. Cronologia aerostatica (Italian) last accessed 2008-06-30
 - Lapini, Gian Luca. 2004. Storia di Milano ::: Enrico Forlanini (Italian) last accessed 2008-06-30
 - Sandro Ligugnana - Alessandro Ligugnana History - Officine Leonardo da Vinci. Last accessed 2009-09-09
 - The New York Times Magazine. 13 January 1918 Page SM3. New Italian Airship Better Than Zeppelin, last accessed 2008-06-30 (full article)
 - editors of Italian wikipedia article Forlanini (dirigibili) - Wikipedia