×
Aircraft / Aviation Vehicles & Artillery Infantry Arms Warships & Submarines Military Pay Scale Military Ranks
HOME
AIRCRAFT / AVIATION
MODERN AIR FORCES
COUNTRIES
MANUFACTURERS
COMPARE
BY CONFLICT
BY TYPE
BY DECADE
COLD WAR
X-PLANE

OKB-1 EF-131


Jet-Powered Tactical Bomber Prototype (1947)


Aviation / Aerospace

1 / 1
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Jump-to: Specifications

The captured German wartime Junkers Ju 287 jet bomber served as the basis for the Soviet post-war OKB-1 EF-131 prototype.



Authored By: Staff Writer | Last Edited: 07/30/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
In their historic advance on Berlin during World War 2 (1939-1945), the Soviet Army captured the remnants of the Junkers Ju 287 jet-powered tactical bomber and, with it, an important stepping stone towards advanced jet-powered flight. The Ju 287 was unique not only in its reliance on turbojet propulsion but also in its use of swept-forward wing mainplanes. Just one of the type was completed and a first flight held on August 8th, 1944 while a second (V2) and third (V3) prototype lay unfinished at war's end. The program was more or less taken up by the Soviets to become the OKB-1 "EF-131" prototype of which two were eventually completed though the product was not adopted for serial production.

The Ju 287 V2 and V3 prototypes were used as the basis for the Soviet EF-131 bomber and the V3 proved the more important form despite being the least complete of the two as it mimicked the intended pre-production model for the Ju 287 series. By all accounts, the EF-131 was a near copy of the V3 and is said to have been hastily completed to accomplish a basic first flight during 1946, this conducted over Soviet-occupied Germany before being broken down and shipped to the Soviet Union for proper evaluation. The product was given more attention at GOZ-1 by both German and Soviet engineers with the goal to showcase the product in the 1947 Tushino display.

Despite the goal, the technologically-advanced aircraft was not readied in time and did not record an official first flight until May 23rd, 1947. Program delays and dwindling interest in the aircraft eventually led to its abandonment and subsequent termination in 1948 as Soviet authorities pushed other, more potent, products with better potential. The "EF-140" (detailed elsewhere on this site) became a related offshoot of the EF-131 program but managed little more for its time in Soviet military aviation history.

As completed, the EF-131 exhibited a length of 67 feet, wingspan of 65.6 feet and height of 18.7 feet. Its standard operating crew was three and power was served through 6 x Junkers Jumo 109-004 engines of 1,984lb thrust each. Maximum speed was reported to be 535 miles per hour with a range out to 1,065 miles and a service ceiling of 41,000 feet. Proposed armament was 2 x 13mm heavy machine guns held in a remote-controlled tail barbette while up to 4,400lb of drop ordnance was to be carried in an internal bomb bay.

Specifications



Service Year
1947

Origin
Soviet Union national flag graphic
Soviet Union

Crew
3

Production
2
UNITS


GOZ-1 - Soviet Union
National flag of the Soviet Union Soviet Union (cancelled)
(OPERATORS list includes past, present, and future operators when applicable)
Ground Attack (Bombing, Strafing)
Ability to conduct aerial bombing of ground targets by way of (but not limited to) guns, bombs, missiles, rockets, and the like.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
67.2 ft
(20.47 m)
Width/Span
63.6 ft
(19.40 m)
Height
18.7 ft
(5.70 m)
Empty Wgt
26,235 lb
(11,900 kg)
MTOW
50,607 lb
(22,955 kg)
Wgt Diff
+24,372 lb
(+11,055 kg)
(Showcased structural values pertain to the base OKB-1 EF-131 production variant)
Installed: 6 x Junkers Motoren Jumo 109-004 turbojet engines developing 1,985 lb of thrust each.
Max Speed
534 mph
(860 kph | 464 kts)
Ceiling
41,010 ft
(12,500 m | 8 mi)
Range
1,063 mi
(1,710 km | 3,167 nm)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base OKB-1 EF-131 production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
PROPOSED, STANDARD:
2 x 13mm heavy machine guns in remote-controlled tail barbette.

PROPOSED, OPTIONAL:
Up to 4,400 lb of conventional drop bombs carried in an internal bomb bay.


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft conventional drop bomb munition


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 0


EF 131 - Base Series Designation; two examples are said to have been completed.


General Assessment
Firepower  
Performance  
Survivability  
Versatility  
Impact  


Values are derrived from a variety of categories related to the design, overall function, and historical influence of this aircraft in aviation history.
Overall Rating
The overall rating takes into account over 60 individual factors related to this aircraft entry.
28
Rating is out of a possible 100 points.
Relative Maximum Speed
Hi: 750mph
Lo: 375mph
This entry's maximum listed speed (534mph).

Graph average of 563 miles-per-hour.
City-to-City Ranges
NYC
 
  LON
LON
 
  PAR
PAR
 
  BER
BER
 
  MOS
MOS
 
  TOK
TOK
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
OKB-1 EF-131 operational range when compared to distances between major cities (in KM).
Max Altitude Visualization
Small airplane graphic
Design Balance
The 3 qualities we look at for a balanced aircraft design are altitude, speed, and range.
Aviation Era Span
Pie graph section
Showcasing era cross-over of this aircraft design.
Unit Production (2)
2
36183
44000
This entry's total production compared against the most-produced military and civilian aircraft types in history (Ilyushin IL-2 and Cessna 172, respectively).
>>>>>>>>

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft


Ribbon graphics not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective aerial campaigns / operations / aviation periods.

Advertisements





Disclaimer | Privacy Policy | Cookies


2022 Military Pay Scale Army Ranks Navy Ranks Air Force Ranks Alphabet Code DoD Dictionary American War Deaths French Military Victories Vietnam War Casualties

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org, the World Directory of Modern Military Aircraft, and SR71blackbird.org, detailing the history of the world's most iconic spyplane.


Facebook Logo YouTube Logo

www.MilitaryFactory.com • All Rights Reserved • Content ©2003-