Polikarpov I-187 and I-188 fighter projects

Taranov

ACCESS: Confidential
Joined
Jan 23, 2011
Messages
119
Reaction score
15
Another drawings, Rusavia "N.N.Polikarpov's Aircraft", 2004 dated
 

Attachments

  • i187blueprint002.jpg
    i187blueprint002.jpg
    181 KB · Views: 982

Maveric

Fight for yor Right!
Joined
Jan 14, 2007
Messages
2,010
Reaction score
415
...
 

Attachments

  • Polikarpow I-187.jpg
    Polikarpow I-187.jpg
    155.1 KB · Views: 860

Tophe

ACCESS: Top Secret
Joined
Feb 18, 2006
Messages
1,149
Reaction score
47
Website
cmeunier.chez-alice.fr

Tophe

ACCESS: Top Secret
Joined
Feb 18, 2006
Messages
1,149
Reaction score
47
Website
cmeunier.chez-alice.fr
According to Herbert Leonard's Docavia great book, the I-188 was a pure interceptor project, with 2 versions:
- 1 looking like the I-187 with a total vision canopy and either a M-90 engine (2,080hp) or else its derivative M-95 (3,300hp for reaching 800km/h speed).
- 1 looking like the I-185/M-71 with a "faired" (?) canopy but with a M-90 engine.
Both were cancelled in February 1943 (together with I-185 and I-187) under Yakovlev pressure.
 

Maveric

Fight for yor Right!
Joined
Jan 14, 2007
Messages
2,010
Reaction score
415
I. 188
 

Attachments

  • Polikarpow I-188.jpg
    Polikarpow I-188.jpg
    178.1 KB · Views: 498

airman

ACCESS: Top Secret
Joined
Oct 14, 2007
Messages
1,266
Reaction score
129
Website
zeef.com
Damn it , surely I-185 and I-188 could be been surely two good fighters with good performance ! ::)
 

redstar72

Soviet Aviation enthusiast
Senior Member
Joined
Jun 7, 2009
Messages
519
Reaction score
71
Justo Miranda said:
M-90 versus M-95 comparative drawings


Dear Justo! This "I-188 M-95" drawing is a What-if, nothing more. And it even isn't very well-done. The M-95 engine (existing only as a project, with 3300 hp estimated power) was 27-cylinder 3-row radial, indeed a M-90 with additional third row. You understand that it would weigh about 1.5x more than original M-90, and it's absolutely impossible to replace the last with M-95 without lengthening the fuselage and/or other major changes, keeping the center of gravity in acceptable position. Also, if the wing would remain, the wing loading would achieve terrible 300 kg/m2 or even more... Absolutely unpractical. Only as a racer / speed record breaker, maybe.
 

Stargazer2006

ACCESS: USAP
Senior Member
Joined
Jun 25, 2009
Messages
13,226
Reaction score
762
Topic split from the Polikarpov projects thread.

I'm reattaching here a plan of the I-187-M-71 project from Krylia Rodine, August 1990:
 

Attachments

  • I-187-M-71.gif
    I-187-M-71.gif
    417.7 KB · Views: 249

blackkite

Don't laugh, don't cry, don't even curse, but.....
Joined
May 31, 2007
Messages
7,970
Reaction score
3,913
Hi! I-187 M-71's engine cooling air intake area is variable.
 

Attachments

  • I-187 M-71.jpg
    I-187 M-71.jpg
    160.5 KB · Views: 39

blackkite

Don't laugh, don't cry, don't even curse, but.....
Joined
May 31, 2007
Messages
7,970
Reaction score
3,913
I-185 M-71 etalon
First flight:
June 1942
Delivery into squadron service: Never
Number built: 1
Power plant: Shvetsov M-71
Armament: Three synchronized 20 mm ShVAK cannons (total of 500 rounds)
Dimensions: Wingspan - 32' 13/4"; Length - 26' 5"
Wing area: 15.53 m2 (167.1 ft2)
Empty weight: 3,130 kg (6,900 lbs)
Loaded weight: 3,735 kg (8,234 lbs)
Top speed at sea level: 600 kph (372.8 mph)
Top speed at altitude: 680 kph (422.5 mph) at 6,100 m (20,013 ft)
Time to climb to 5,000 m (16,404 m): 4.7 minutes
Service Ceiling: 11,000 m (36,089 ft)
Virage Time: 22.5 seconds

History
Produced in April of 1942, the I-185 etalon (or 'standard settler') was the version of the Polikarpov I-185 that was designated to become the final production variant of the I-185. This I-185 underwent manufacturer's flight tests in June-October and was submitted for State acceptance trials at NII VVS on the 18th of November.

The aircraft weighed in at a total of 3,629 kg, 144 kg more than the the 1941 produced prototype of the I-185 M-71, but it differed from all the other I-185s in having the engine cowling's external and internal aerodynamics improved, resulting in a substantial reduction in drag. The aircraft was found to be extremely maneuverable, and at the time of testing, surpassed all other Soviet and German designs in overall performance. However, the design was certainly not without its flaws.

From the 17th of December 1942 to the 26th of January 1943, testing on the aircraft was interrupted by the need to replace the M-71 engine, owing to frequent failures. Shortly afterwards, the new engine failed after less than 24 hours of running. On January 27th, the fighter crashed due to an in-flight engine failure. Then, on April 5th, the aircraft suffered another in-flight engine failure, and the prominent test pilot Vasiliy Stepanchonok was killed when when attempting a deadstick landing. It was later decided to stop production of the I-185 because of its unreliable engine. like the aircraft's 1941 produced prototypes, this version of the I-185 never got to see use in service tests with the 728th
Sources:
Soviet Air Power in World War 2 - Yefim Gordon
https://forum.warthunder.com/index....5-m-71-etalon-39standard-settler39-in-detail/
 

Attachments

  • I-185 M-71.png
    I-185 M-71.png
    345 KB · Views: 27
  • The M-71-powered I-185 etalon during manufacturer's flight tests..jpg
    The M-71-powered I-185 etalon during manufacturer's flight tests..jpg
    40.2 KB · Views: 26
  • I-185 M-71.jpg
    I-185 M-71.jpg
    285.7 KB · Views: 49
Last edited:

blackkite

Don't laugh, don't cry, don't even curse, but.....
Joined
May 31, 2007
Messages
7,970
Reaction score
3,913

Attachments

  • The composition of cannon weapons of the I-185 M-71 Etalon aircraft.jpg
    The composition of cannon weapons of the I-185 M-71 Etalon aircraft.jpg
    80.1 KB · Views: 28
  • Bomb and chemical weapons of the I-185 M-71 Etalon aircraft.jpg
    Bomb and chemical weapons of the I-185 M-71 Etalon aircraft.jpg
    78.1 KB · Views: 26
  • Installation of ro-82 Flute jet gun on I-185 M-71 Etalon.jpg
    Installation of ro-82 Flute jet gun on I-185 M-71 Etalon.jpg
    52.3 KB · Views: 23
  • The input tubes of the M-71 engine centrifugal supercharger on the I-185 Etalon.jpg
    The input tubes of the M-71 engine centrifugal supercharger on the I-185 Etalon.jpg
    94.4 KB · Views: 43

Similar threads

Top