{{Infobox aircraft | name = S-3 | logo = | logo_size = | image = File:Sikorsky S-3 aircraft circa 19010.jpg | alt = | caption = Sikorsky S-3 near Kiev Russia Empire December 1910 | long_caption = | other_names = | aircraft_type = Experimental | aim = | outcome = | related = | national_origin = Russian Empire | manufacturer = | design_group = | designer = Igor Sikorsky | builder = | issuer = | status = | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 1 | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = December 1910 | initiated = | in_service = | last_flight = | expected = | developed_from = Sikorsky S-2 | variants = | developed_into = Sikorsky S-4 | preservation = | fate = | predecessors = | successors = | concluded = }}
The '''Sikorsky S-3''' was an early Russian single seat biplane design by Igor Sikorsky. Work on the machine started in July 1910 and was completed in late November.
==Design and development== The S-3 was a larger improved version of the S-2 with a more powerful {{convert|40|hp|kW|0|abbr=on}} Anzani three-cylinder engine. The main wings were manufactured in a more uniform manner with the ribs held to a closer tolerance and the fabric covering was of better quality. Other refinements included larger ailerons and faster-responding flight control surfaces.<ref name=winged>{{cite book |last=Sikorsky |first=Igor|title=The Story of the Winged-S|year=1944|publisher=Dodd, Mead & Company|location=New York|isbn=9781258163556|page=42}}</ref>
==Operational history== The S-3 exhibited performance superior to the S-2, and Sikorsky made a dozen successful flights starting early in December. The S-3 made its last flight on December 13, 1910 when at an altitude of 90 feet the engines distributor shifted to a retarded position and lost power. The aircraft landed hard on a frozen pond, broke through the ice and sank causing serious damage. The S-3 was salvaged and some parts including the engine were used in the construction of the S-4.<ref name=wingeds>{{cite book |last=Sikorsky |first=Igor|title=The Story of the Winged-S|year=1944|publisher=Dodd, Mead & Company|location=New York|isbn=9781258163556|page=43}}</ref>
==Specifications== {{Aircraft specs |ref=''Russian Aviation Museum''<ref name=ram>{{cite web|url=http://ram-home.com/ram-old/index.html|title=S-3|date=4 September 1997|website=ram-home.com|access-date=2 April 2017}}</ref> |prime units?=imp<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, met(ric) first for all others. You MUST choose a format, or no specifications will show --> <!-- General characteristics --> |genhide=
|crew=One |capacity= |length m=8 |length ft= |length in= |upper span m=8 |upper span ft= |upper span in= |upper span note= |lower span m= |lower span ft= |lower span in= |lower span note= |height m= |height ft= |height in= |wing area sqm=24 |wing area sqft= |wing area note= |aspect ratio= |airfoil= |empty weight kg=220 |empty weight lb= |empty weight note= |gross weight kg=310 |gross weight lb= |gross weight note= |fuel capacity= |more general= <!-- Powerplant --> |eng1 number=1 |eng1 name=Anzani 3 |eng1 type=-cyl. air-cooled fan piston engine |eng1 kw= |eng1 hp=40
|prop blade number= |prop name= |prop dia m= |prop dia ft= |prop dia in= |prop note= <!-- Performance --> |perfhide=
|max speed kmh= |max speed mph= |max speed kts= |cruise speed kmh= |cruise speed mph= |cruise speed kts= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |range km= |range miles= |range nmi= |endurance= |ceiling m=30 |ceiling ft= |g limits= |roll rate= |climb rate ms= |climb rate ftmin= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note=max load |more performance= |avionics= }}
==References== {{reflist}}
{{Sikorsky Aircraft}}
S-3 Category:Biplanes Category:Single-engined tractor aircraft Category:Aircraft first flown in 1910