1. Design and development

2. Operational history

3. Specifications

4. References

The Sikorsky S-7 was a Russian single engine experimental prototype aircraft built by the Russian Baltic Railroad Car Works shortly after Igor Sikorsky became chief engineer of the aircraft manufacturing division.

Design and development

The S-7 was two-seater wire-braced monoplane powered by a {{convert|70|hp|kW|0|abbr=on}} Gnome air-cooled rotary engine. Construction began in early summer of 1912 and completed in July. The pilot sat in the rear cockpit with a passenger seated in a forward compartment in a tandem arrangement. The fuselage was enclosed in plywood and the aircraft used components taken from the S-6A including the main wing, tail and landing gear.^[1][2]

Operational history

The S-7 was entered in the international military competition at Saint Petersburg in August 1912. During a take-off attempt from a furrowed field the landing gear was severely damaged and the S-7 was unable to finish the completion. In 1913 the aircraft was repaired and served as a trainer. In 1914 Bulgaria purchased the S-7 and used it in operations during World War I.^[2][1]

Specifications

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|crew=One
|capacity=One passenger
|length m=8.2
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|upper span m=10
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|wing area sqm=20
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|empty weight kg=449
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|gross weight kg=776
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|eng1 number=1
|eng1 name=Gnome Lambda
|eng1 type=7-cylinder air-cooled rotary piston engine
|eng1 kw=
|eng1 hp=70
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|perfhide=
|max speed kmh=108
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}}{{aircontent
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}}

References

• Jože Melaher Zmagoslav
• Jože Međimurec
• Jože Možina
• Jože Primožič
• Jože Smole
• Jože Trontelj
• Jože Vrtačič
• JP21
• JP-4 (fuel)
• JPAA
• JPA Chicago
• J Paediatr Child Health
• J. Paediatr. Child Health
• J. Paediatr. Med. Surg.
• J Paediatr Med Surg
• J Pain.
• J Pain Manag Med
• J. Pain Manag. Med.
• J. Pain Manag. Ther.
• J Pain Manag Ther
• J. Pain Palliat. Care Pharmacother.
• J Pain Palliat Care Pharmacother
• J Pain Relief
• J. Pain Relief
• J. Pain Res.