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Mikoyan-Gurevich MiG-9 / I-301
Mikoyan-Gurevich I-300
Mikoyan-Gurevich I-302
Mikoyan-Gurevich I-308
Mikoyan-Gurevich I-307

mig-9fr
MiG-9FR


Assigned the Izdeliye designation F by the OKB and the initial military designation I-300(F), the first Soviet turbojet-powered fighter of indigenous design was the primary design responsibility of Aleksei T Karyev.

The I-300 was powered by paired 800kg BMW 003A turbojets, and the first prototype performed a 4m "hop" on 19 April 1946, and its first true test flight on the following 24 April. It crashed during its 19th flight, after logging 6 hrs 23 min, when a wing root fairing detached and destroyed the horizontal tail. The second and third prototypes following on 11 and 9 August respectively. These were powered by paired 1,760 lb st (800 kgp) BMW 003A turbojets, the German engines being copied and placed in production in the Soviet Union in an equally high tempo programme as the RD-20F.

On the 20th of August a directive was issued by the NKAP (People's Commissariat for the Aircraft Industry) that 10 more aircraft be built by hand and completed by 22 October. Considered as pre-series aircraft, these were designated FS by the OKB and I-301 officially. With the decision to manufacture the fighter in series the designation MiG-9 was also assigned. The last of these was completed 63 days later, on 21 October.

The first pre-series aircraft was completed on 13 October 1946 - 54 days after issue of the directive - and flown on 26 October, subsequent production aircraft being externally similar. These were powered by paired RD-20 turbojets - reverse-engineered BMW 003As - and armament consisted of one 37mm and two 23mm cannon.

Noteworthy for the brevity of its development programme, only 14 months elapsing between inception and test, the MiG--9 single-seat fighter was the first Soviet turbojet-powered aircraft to fly albeit only three hours prior to the Yak-15.

A series of 50 MiG-9s was completed by 1 May 1947, these being powered by two RD-20F engines and carrying an armament of one 37-mm and two 23-mm cannon.

Two tandem two-seat prototypes were also built, the first of these, the FT-1 (I-301T), retaining the standard armament and flying for the first time in July 1947. The FT-2, which followed on 25 August 1947, had a redesigned cockpit canopy, air brakes and provision for drop tanks. This aircraft was later fitted with the first Soviet production ejection seats. The I-301 version of the MiG-9 suffered from engine stoppages above 7500m as a result of gun gas ingestion. Among attempts to eradicate this problem was the FP (I-302) which simply displaced the 37mm cannon from intake splitter to upper fuselage portside.

The 1-307 (MiG-9F) was fitted with an improved version of the BMW engine, the RD-21 of 2,094 lb st (950 kgp), this attaining a max speed of 590 mph (950 km/h).

Rearranged armament was also featured by the more extensively revised FR (I-308), the 37mm weapon being transferred to the starboard side of an entirely redesigned forward fuselage with the 23mm cannon being relocated to port. The forward fuselage embodied a forward-positioned, pressurised cockpit, air brakes and afterburning derivatives of the RD-20 turbojet developed by Kolesov. These engines, designated RD-21 (initially RD-20F) each developed 2,094 lb st (950 kgp). Although series production of the MiG-9FR was planned, work was discontin-ued by July 1948 to permit concentration on the more advanced 1-310.

One example, the 1-305, was built for Lyulka TR-1 turbojets, but was not, in the event, flown.

Flown in July 1947, the FP was the first MiG-9 to attain Mach=0.8 under test, and an altitude of 5000m was reached in 2.7 min. Like the FP, the FR did not progress beyond prototype status, but, similarly powered to the latter, the FF (I-307) was built as a small pre-series.
Flown in September 1947, the FF (externally similar to the FS) had improved pilot protection (12mm front and back armour, and a 44mm windscreen). This model attained 950km/h at sea level and reached 5000m in 2.9 min, empty and loaded weights being 3471kg and 5117kg respectively.

 

Mig-9-2


I-300
Engines: 2 x 800kg BMW 003A turbojets

I-300 ver 2 & 3

Engines: 2 x 1,760 lb st (800 kgp) BMW 003A turbojets

MiG-9FS / I-301
Engines: 2 x RD-20 turbojets
Wingspan: 10.00 m / 32 ft 10 in
Length: 9.83 m / 32 ft 3 in
Height: 3.22 m / 10 ft 7 in
Wing area: 18.20 sq.m / 195.90 sq ft
Max take-off weight: 4963 kg / 10942 lb
Empty weight: 3420 kg / 7540 lb
Max. speed: 911 km/h / 566 mph
Range: 800 km / 497 miles
Armament: one 37mm, two 23mm cannon

MiG-9
Engines: 2 x RD-20F
Span, 32 ft 9¾ in (10,00m)
Length, 31 ft 11 7/8 in(9,75 m)
Height, 9 ft 10 1/8 in (3,00 m)
Wing area, 195.9 sq ft (18,20sq.m).
Empty weight, 7,804 lb (3 540 kg)
Loaded weight, 12,127 lb (5 501 kg)
Max speed, 566 mph (910 km/h) at 16,405 ft (5 000 m)
Time to 16,405 ft (5 000 m), 6.2 min
Range (without external fuel), 572 sm (920 km)
Armament: one 37-mm, two 23-mm cannon

MiG-9FT-1 / I-301T
Seats: 2
Armament: one 37-mm, two 23-mm cannon

MiG-9FT-2
Seats: 2
Armament: one 37-mm, two 23-mm cannon

MiG-9FP / I-302

Armament: one 37-mm, two 23-mm cannon
Time to5000m: 2.7 min

1-307 / MiG-9F
Engines: 2 x RD-21, 2,094 lb st / 950 kgp
Max speed: 590 mph / 950 km/h

MiG-9FR / I-308

Engines: RD-21 (initially RD-20F), 2,094 lb st  / 950 kgp
Armament: one 37-mm, two 23-mm cannon

I-305

Engines: 2 x Lyulka TR-1 turbojets

MiG-9FF / I-307
Max speed: 950km/h at sea level
Time to 5000m: 2.9 min
Empty weight: 3471kg
Loaded weight: 5117kg

mig-9ld

Mikoyan/Gurevich MiG-9

 

 

 


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