Military Wiki
(Import article)
 
m (→‎See also: Remove some templates, interwiki links, delink non military terms and cleanup)
 
(2 intermediate revisions by one other user not shown)
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 23: Line 24:
   
 
==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 [[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 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 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 31: Line 32:
 
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 50: Line 51:
 
;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 70: Line 71:
 
|wing area sqm=20.4
 
|wing area sqm=20.4
 
|wing area sqft=220
 
|wing area sqft=220
|swept area sqm=<!-- swing-wings -->
+
|swept area sqm=
|swept area sqft=<!-- swing-wings -->
+
|swept area sqft=
|rot area sqm=<!-- helicopters -->
+
|rot area sqm=
|rot area sqft=<!-- helicopters -->
+
|rot area sqft=
|volume m3=<!-- lighter-than-air -->
+
|volume m3=
|volume ft3=<!-- lighter-than-air -->
+
|volume ft3=
|aspect ratio=<!-- sailplanes -->
+
|aspect ratio=
 
|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=<!-- lighter-than-air -->
+
|lift kg=
|lift lb=<!-- lighter-than-air -->
+
|lift lb=
 
|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=<!-- prop engines -->336
+
|eng1 kw=336
|eng1 hp=<!-- prop engines -->450
+
|eng1 hp=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=<!-- supersonic aircraft -->
+
|max speed mach=
|cruise speed kmh=<!-- if max speed unknown -->
+
|cruise speed kmh=
|cruise speed mph=<!-- if max speed unknown -->
+
|cruise speed mph=
 
|range km=
 
|range km=
 
|range miles=
 
|range miles=
|endurance h=<!-- if range unknown -->
+
|endurance h=
|endurance min=<!-- if range unknown -->
+
|endurance min=
 
|ceiling m=
 
|ceiling m=
 
|ceiling ft=
 
|ceiling ft=
|glide ratio=<!-- sailplanes -->
+
|glide ratio=
 
|climb rate ms=
 
|climb rate ms=
 
|climb rate ftmin=
 
|climb rate ftmin=
|sink rate ms=<!-- sailplanes -->
+
|sink rate ms=
|sink rate ftmin=<!-- sailplanes -->
+
|sink rate ftmin=
 
|armament1=
 
|armament1=
 
|armament2=
 
|armament2=
Line 113: Line 114:
   
 
==See also==
 
==See also==
{{aircontent
 
|see also=
 
|related=<!-- related developments -->
 
 
*[[Seversky P-35]]
 
*[[Seversky P-35]]
|similar aircraft=<!-- similar or comparable aircraft -->
 
|lists=<!-- related lists -->
 
 
*[[List of seaplanes and amphibious aircraft]]
 
*[[List of seaplanes and amphibious aircraft]]
}}
 
   
 
==References==
 
==References==
{{commons category|Seversky SEV-3}}
+
{{Commons|Category:Seversky SEV-3}}
 
{{reflist}}
 
{{reflist}}
   
Line 129: Line 124:
 
{{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 International|Flight]]'', 16 November 1933
+
* [https://www.flightglobal.com/pdfarchive/view/1933/1933%20-%201016.html "Fast American Amphibians"], '' Flight'', 16 November 1933
 
{{Refend}}
 
{{Refend}}
   
Line 140: Line 135:
 
{{Wikipedia|Seversky SEV-3}}
 
{{Wikipedia|Seversky SEV-3}}
   
[[Category:United States civil utility aircraft 1930–1939]]
+
[[Category:1930s United States civil utility aircraft]]
 
[[Category:Floatplanes]]
 
[[Category:Floatplanes]]
 
[[Category:Seversky aircraft|SEV-3]]
 
[[Category:Seversky aircraft|SEV-3]]

Latest revision as of 16:28, 14 June 2020

SEV-3
Role Three-seat amphibian
National origin United States
Manufacturer Seversky Aircraft
Designer Alexander Kartveli
First flight 1933

The Seversky SEV-3 was an American three-seat amphibian monoplane, the first aircraft designed and built by the Seversky Aircraft Corporation.

Design and development[]

The SEV-3 was an all-metal cantilever low-wing monoplane powered by a nose-mounted 420 hp (313 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.[1]

The SEV-3 first flew as a floatplane in June 1933, demonstrating excellent performance as both an amphibian and a landplane.[2] It was built in small numbers mainly for export.

Alexander de Seversky standing before the SEV-3XAR, autumn 1934

Operational history[]

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 mph (370.8 km/h) which stood for 49 years. A landplane version was also developed with conventional landing gear.[3]

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.[4] This proved grossly underpowered and was quickly replaced by the North American BT-9.[5]

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 O-38F, which was reassigned to the 21st Observation Squadron, GHQ Air Force, for general flying.[6][7]

Operators[]

 Spain
 Colombia

Variants[]

SEV-3XAR
Amphibian
SEV-3XLR
Landplane
SEV-3MWW
Amphibian for the Colombian Air Force, six built.
BT-8
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.[8]

Specifications (BT-8)[]

BT-8

Data from United States Military Aircraft since 1909[9]

General characteristics

  • Crew: 2
  • Length: 24 ft 4 in (7.42 m)
  • Wingspan: 36 ft 0 in (10.98 m)
  • Wing area: 220 ft2 (20.4 m2)
  • Empty weight: 3,017 lb (1,317 kg)
  • Gross weight: 4,050 lb (1,841 kg)
  • Powerplant: 1 × Pratt & Whitney R-985-11 Wasp Junior, 450 hp (336 kW) each

Performance

  • Maximum speed: 175[10] mph (282 km/h)

See also[]

References[]

  1. Green and Swanborough Air Enthusiast Ten, pp. 9–10.
  2. Green and Swanborough Air Enthusiast Ten, p. 9.
  3. "Amphibian Flies Nearly Four Miles a Minute" Popular Mechanics, December 1935
  4. Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". Air Enthusiast, Ten, July–September 1979, pp. 8–9..
  5. Davis, Larry. P-35: Mini in Action (Mini Number 1). Carrollton, Texas: Squadron/Signal Publications, 1994. ISBN 0-89747-321-3, p. 4.
  6. 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.
  7. https://www.scribd.com/document/76986615/Air-Force-News-Jul-Dec-1936
  8. Grey, C.G.; Bridgman, Leonard, eds (1937). Jane's all the World's Aircraft 1937. London: Sampson Low, Marston & company, ltd. p. 324c. 
  9. Swanborough and Bowers 1963, p. 527.
  10. at sea level

Further reading[]

  • Green, William and Gordon Swanborough. "The end of the beginning...The Seversky P-35". Air Enthusiast, Ten, July–September 1979, pp. 8–21.
  • Howson, Gerald. "A Seversky in the Spanish War". Air Enthusiast, Eighteen, April–July 1982, pp. 32–36.
  • 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.
  • Taylor, Michael J.H. Jane's Encyclopedia of Aviation. London: Studio Editions, 1989. ISBN 0-517-69186-8.
  • "Fast American Amphibians", Flight, 16 November 1933

This page uses Creative Commons Licensed content from Wikipedia (view authors).