Military Wiki
Edit Page

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

Latest revision Your text
Line 3: Line 3:
 
|image= File:Seversky SEV-3XAR at Wright Field in 1934.jpg{{!}}border
 
|image= File:Seversky SEV-3XAR at Wright Field in 1934.jpg{{!}}border
 
|caption=
 
|caption=
 
}}{{Infobox aircraft type
}}
 
{{Infobox aircraft type
 
 
|type=Three-seat amphibian
 
|type=Three-seat amphibian
 
|national origin=United States
 
|national origin=United States
Line 24: Line 23:
   
 
==Design and development==
 
==Design and development==
The SEV-3 was an all-metal cantilever low-wing monoplane powered by a nose-mounted 420&nbsp;hp (313&nbsp;kW) [[Wright J-6]] Whirlwind radial engine. It had two cockpits in tandem, a forward cockpit for the pilot and a rear cockpit for two passengers, both with sliding canopies. It could either be fitted with twin amphibious floats which had main wheels fitted in the floats to allow it to operate from land, or with a fixed tailwheel undercarriage with the mainwheels enclosed in large fairings.<ref name="AE10 p9-0">Green and Swanborough ''Air Enthusiast'' Ten, pp. 9–10.</ref>
+
The SEV-3 was an all-metal cantilever low-wing monoplane powered by a nose-mounted 420&nbsp;hp (313&nbsp;kW) [[Wright J-6]] Whirlwind radial engine. It had two cockpits in tandem, a forward cockpit for the pilot and a rear cockpit for two passengers, both with sliding canopies. It could either be fitted with twin amphibious floats which had main wheels fitted in the floats to allow it to operate from land, or with a fixed [[conventional landing gear|tailwheel undercarriage]] with the mainwheels enclosed in large fairings.<ref name="AE10 p9-0">Green and Swanborough ''Air Enthusiast'' Ten, pp. 9–10.</ref>
   
 
The SEV-3 first flew as a floatplane in June 1933, demonstrating excellent performance as both an amphibian and a landplane.<ref name="AE10 p9">Green and Swanborough ''Air Enthusiast'' Ten, p. 9.</ref> It was built in small numbers mainly for export.
 
The SEV-3 first flew as a floatplane in June 1933, demonstrating excellent performance as both an amphibian and a landplane.<ref name="AE10 p9">Green and Swanborough ''Air Enthusiast'' Ten, p. 9.</ref> It was built in small numbers mainly for export.
Line 32: Line 31:
 
An SEV-3 established a world speed record for piston-engined amphibians in 1933, and on 15 September 1935, a Wright Cyclone-powered SEV-3 set a record of 230&nbsp;mph (370.8&nbsp;km/h) which stood for 49 years. A landplane version was also developed with conventional landing gear.<ref>[https://books.google.com/books?id=x98DAAAAMBAJ&pg=PA870&dq=Popular+Science+1933+plane+%22Popular+Mechanics%22&hl=en&ei=T4wiTpSVB4bnsQLQ5ujWAw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CEkQ6AEwCDgK#v=onepage&q&f=true "Amphibian Flies Nearly Four Miles a Minute" ''Popular Mechanics'', December 1935]</ref>
 
An SEV-3 established a world speed record for piston-engined amphibians in 1933, and on 15 September 1935, a Wright Cyclone-powered SEV-3 set a record of 230&nbsp;mph (370.8&nbsp;km/h) which stood for 49 years. A landplane version was also developed with conventional landing gear.<ref>[https://books.google.com/books?id=x98DAAAAMBAJ&pg=PA870&dq=Popular+Science+1933+plane+%22Popular+Mechanics%22&hl=en&ei=T4wiTpSVB4bnsQLQ5ujWAw&sa=X&oi=book_result&ct=result&resnum=9&ved=0CEkQ6AEwCDgK#v=onepage&q&f=true "Amphibian Flies Nearly Four Miles a Minute" ''Popular Mechanics'', December 1935]</ref>
   
The design influenced a long line of Seversky and later Republic aircraft, eventually leading to the development of the [[P-47 Thunderbolt]]. A landplane version was used by the United States Army Air Corps as a basic trainer with the designation '''BT-8''', 30 of which were ordered in 1935.<ref>Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". ''Air Enthusiast'', Ten, July–September 1979, pp. 8–9..</ref> This proved grossly underpowered and was quickly replaced by the [[North American BT-9]].<ref>Davis, Larry. ''P-35: Mini in Action'' (Mini Number 1). Carrollton, Texas: Squadron/Signal Publications, 1994. {{ISBN|0-89747-321-3}}, p. 4.</ref>
+
The design influenced a long line of Seversky and later Republic aircraft, eventually leading to the development of the [[P-47 Thunderbolt]]. A landplane version was used by the United States Army Air Corps as a basic trainer with the designation '''BT-8''', 30 of which were ordered in 1935.<ref>Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". ''Air Enthusiast'', Ten, July–September 1979, pp. 8–9..</ref> This proved grossly underpowered and was quickly replaced by the [[North American BT-9]].<ref>Davis, Larry. ''P-35: Mini in Action'' (Mini Number 1). Carrollton, Texas: Squadron/Signal Publications, 1994. {{ISBN|0-89747-321-3}}, p. 4.</ref>.
   
 
One BT-8 was delivered to [[Bolling Field]], on 11 June 1936, for use by Chief of the Air Corps Major General [[Oscar Westover]], and assigned to the [[14th Bombardment Squadron]], GHQ Air Force. It replaced an [[Douglas O-38|O-38F]], which was reassigned to the [[21st Observation Squadron]], GHQ Air Force, for general flying.<ref>Editors, "NEW PLANE FOR THE CHIEF OF THE AIR CORPS" ''Air Corps News Letter'', Information Division, Air Corps, Munitions Building, Washington, D.C., 1 July 1936, Volume XIX, Number 13, page 12.</ref><ref>https://www.scribd.com/document/76986615/Air-Force-News-Jul-Dec-1936</ref>
 
One BT-8 was delivered to [[Bolling Field]], on 11 June 1936, for use by Chief of the Air Corps Major General [[Oscar Westover]], and assigned to the [[14th Bombardment Squadron]], GHQ Air Force. It replaced an [[Douglas O-38|O-38F]], which was reassigned to the [[21st Observation Squadron]], GHQ Air Force, for general flying.<ref>Editors, "NEW PLANE FOR THE CHIEF OF THE AIR CORPS" ''Air Corps News Letter'', Information Division, Air Corps, Munitions Building, Washington, D.C., 1 July 1936, Volume XIX, Number 13, page 12.</ref><ref>https://www.scribd.com/document/76986615/Air-Force-News-Jul-Dec-1936</ref>
Line 51: Line 50:
 
;BT-8
 
;BT-8
 
:Landplane basic-trainer for the United States Army Air Corps, 30 built.
 
:Landplane basic-trainer for the United States Army Air Corps, 30 built.
;SEV-X-BT: multi-discipline trainer version of the BT-8 with retractable undercarriage. The sole SEV-X-BT lost in competition to the [[North American BT-9]] and was reportedly scrapped for spares to service the [[Seversky 2PA]].<ref name=JAWA1937>{{cite book |title=Jane's all the World's Aircraft 1937 |editor1-last=Grey |editor1-first=C.G. |year=1937 |publisher=Sampson Low, Marston & company, ltd |location=London |editor2-last=Bridgman|editor2-first=Leonard| page=324c}}</ref>
+
;SEV-X-BT: multi-discipline trainer version of the BT-8 with retractable undercarriage. The sole SEV-X-BT lost in competition to the [[North American BT-9]] and was reportedly scrapped for spares to service the [[Seversky 2PA]].<ref name=JAWA1937> {{cite book |title=Jane's all the World's Aircraft 1937 |editor1-last=Grey |editor1-first=C.G. |year=1937 |publisher=Sampson Low, Marston & company, ltd |location=London |editor2-last=Bridgman|editor2-first=Leonard| page=324c}}</ref>
   
 
==Specifications (BT-8)==
 
==Specifications (BT-8)==
Line 71: Line 70:
 
|wing area sqm=20.4
 
|wing area sqm=20.4
 
|wing area sqft=220
 
|wing area sqft=220
|swept area sqm=
+
|swept area sqm=<!-- swing-wings -->
|swept area sqft=
+
|swept area sqft=<!-- swing-wings -->
|rot area sqm=
+
|rot area sqm=<!-- helicopters -->
|rot area sqft=
+
|rot area sqft=<!-- helicopters -->
|volume m3=
+
|volume m3=<!-- lighter-than-air -->
|volume ft3=
+
|volume ft3=<!-- lighter-than-air -->
|aspect ratio=
+
|aspect ratio=<!-- sailplanes -->
 
|empty weight kg=1,317
 
|empty weight kg=1,317
 
|empty weight lb=3,017
 
|empty weight lb=3,017
 
|gross weight kg=1,841
 
|gross weight kg=1,841
 
|gross weight lb=4,050
 
|gross weight lb=4,050
|lift kg=
+
|lift kg=<!-- lighter-than-air -->
|lift lb=
+
|lift lb=<!-- lighter-than-air -->
 
|eng1 number=1
 
|eng1 number=1
 
|eng1 type=[[Pratt & Whitney R-985]]-11 Wasp Junior
 
|eng1 type=[[Pratt & Whitney R-985]]-11 Wasp Junior
|eng1 kw=336
+
|eng1 kw=<!-- prop engines -->336
|eng1 hp=450
+
|eng1 hp=<!-- prop engines -->450
 
|perfhide=n
 
|perfhide=n
 
|max speed kmh=282
 
|max speed kmh=282
 
|max speed mph=175<ref>at sea level</ref>
 
|max speed mph=175<ref>at sea level</ref>
|max speed mach=
+
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=
+
|cruise speed kmh=<!-- if max speed unknown -->
|cruise speed mph=
+
|cruise speed mph=<!-- if max speed unknown -->
 
|range km=
 
|range km=
 
|range miles=
 
|range miles=
|endurance h=
+
|endurance h=<!-- if range unknown -->
|endurance min=
+
|endurance min=<!-- if range unknown -->
 
|ceiling m=
 
|ceiling m=
 
|ceiling ft=
 
|ceiling ft=
|glide ratio=
+
|glide ratio=<!-- sailplanes -->
 
|climb rate ms=
 
|climb rate ms=
 
|climb rate ftmin=
 
|climb rate ftmin=
|sink rate ms=
+
|sink rate ms=<!-- sailplanes -->
|sink rate ftmin=
+
|sink rate ftmin=<!-- sailplanes -->
 
|armament1=
 
|armament1=
 
|armament2=
 
|armament2=
Line 118: Line 117:
   
 
==References==
 
==References==
{{Commons|Category:Seversky SEV-3}}
+
{{commons category|Seversky SEV-3}}
 
{{reflist}}
 
{{reflist}}
   
Line 124: Line 123:
 
{{Refbegin}}
 
{{Refbegin}}
 
* Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". ''Air Enthusiast'', Ten, July–September 1979, pp.&nbsp;8–21.
 
* Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". ''Air Enthusiast'', Ten, July–September 1979, pp.&nbsp;8–21.
* Howson, Gerald. "A Seversky in the Spanish War". ''Air Enthusiast, Eighteen,'' April–July 1982, pp.&nbsp;32–36.
+
* Howson, Gerald. "A Seversky in the Spanish War". ''[[Air Enthusiast]], Eighteen,'' April–July 1982, pp.&nbsp;32–36.
* ''The Illustrated Encyclopedia of Aircraft'' (Part Work 1982–1985) London: Orbis Publishing, 1985.
+
* ''The [[Illustrated Encyclopedia of Aircraft]]'' (Part Work 1982–1985) London: Orbis Publishing, 1985.
 
* Swanborough, F.G. and [[Peter M. Bowers]]. ''United States Military Aircraft since 1909''. London: Putnam, 1963.
 
* Swanborough, F.G. and [[Peter M. Bowers]]. ''United States Military Aircraft since 1909''. London: Putnam, 1963.
 
* Taylor, Michael J.H. ''Jane's Encyclopedia of Aviation''. London: Studio Editions, 1989. {{ISBN|0-517-69186-8}}.
 
* Taylor, Michael J.H. ''Jane's Encyclopedia of Aviation''. London: Studio Editions, 1989. {{ISBN|0-517-69186-8}}.
* [https://www.flightglobal.com/pdfarchive/view/1933/1933%20-%201016.html "Fast American Amphibians"], '' Flight'', 16 November 1933
+
* [https://www.flightglobal.com/pdfarchive/view/1933/1933%20-%201016.html "Fast American Amphibians"], '' [[Flight International|Flight]]'', 16 November 1933
 
{{Refend}}
 
{{Refend}}
   

Please note that all contributions to the Military Wiki are considered to be released under the CC-BY-SA

Cancel Editing help (opens in new window)