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Signal Corps Dirigible No. 1 was the first powered aircraft ordered for the Signal Corps by the Aeronautical Division of the United States Army. The purchase of SC-1, a dirigible designed by Thomas Scott Baldwin, was the result of urgings by Chief Signal Officer Brigadier General James Allen. After seeing Baldwin demonstrate a dirigible at the St. Louis air meet in 1907, Allen had urged the U.S. Army to buy a dirigible, as many European armies had dirigibles by the turn of the century.[1]

Signal Corps Dirigible No. 1
Role	Dirigible Type of aircraft
National origin	United States
Designer	Thomas Scott Baldwin
Number built	1

On 5 August 1908, the Army tested SC-1 at Fort Myer, Virginia. The craft fell short of a 2-hour, 20 mph objective to meet a $8,000 per unit award. The Army formally accepted the craft as Signal Corps Dirigible No. 1 paying $5,737.50.[2] On 28 Aug. 1908 Lieutenants Frank Lahm, Michael "CC" Finney, Thomas Selfridge and Benjamin Foulois were taught to fly the craft.[1]

After Second Lieutenant John G Winter Jr of the 6th Cavalry was assigned to duty in the Aeronautical Division, the balloon detachment was transferred to Fort Omaha, Nebraska.[3]

On 26 May, pilot Lieutenant Lahm and Lieutenant Foulois made a flight in SC-1 at Fort Omaha, and manoeuvred the craft at will. SC-1 remained there until scrapped in 1912. The Army did not purchase another dirigible until after World War I.[1]

Specifications (Signal Corps Dirigible No. 1)

Data from Smithsonian

General characteristics

• Capacity: 1
• Length: 93 ft (28 m)
• Volume: 20,000 cu ft (570 m³)
• Useful lift: 1,360 lb (620 kg)
• Powerplant: 1 × Curtiss , 20 hp (15 kW)

Performance

• Maximum speed: 17.04 kn (19.61 mph, 31.56 km/h)
• Cruise speed: 11.95 kn (13.75 mph, 22.13 km/h)

References

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