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Mikoyan-Gurevich PBSh-1

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Mikoyan-Gurevich PBSh-1
Company typeAttack aircraft concept
IndustryAerospace
FoundedJanuary 1940
FounderN. Z. Matyuk (designer)
Headquarters
Soviet Union
ProductsMilitary aircraft concepts


Template:Infobox aircraft

The Mikoyan-Gurevich PBSh-1 (Russian: Микоя́н и Гуре́вич ПБШ-1) was a Soviet Union-originated attack aircraft concept.

Design and development

The design phase for the PBSh-1 commenced in January 1940, with the initial draft by N. Z. Matyuk receiving approval on 24 July that same year.[1][2] The aircraft featured a low-mounted cantilever inverted gull wing and was intended to be powered by either a single Mikulin AM-37 or a 1,178 kilowatts (1,580 hp) Mikulin AM-38 engine.[2][3] Armor plating, totaling approximately 1,390 kilograms (3,060 lb), which constituted around 30% of the plane’s weight, was planned to safeguard the engine, pilot’s cockpit, and other critical components by being structurally integrated.[4] The fuselage center section and wing roots were designed using welded steel tubes, while the rear fuselage and outer wing panels were to be constructed from wood.[2] Conventional landing gear was specified, with the main gear drawing direct inspiration from that of the Mikoyan-Gurevich I-220. Armament was set to include two 23 minutes ([convert: unknown unit]) Volkov-Yartsev VYa-23 cannons alongside six 7.62 minutes ([convert: unknown unit]) ShKAS machine guns, all configured to fire outside the propeller arc.[2][4] A bomber variant was planned to carry various demolition or incendiary bombs within an internal fuselage bay, in addition to two underwing bombs for dive bombing missions. Development ceased once the competing Ilyushin Il-2 received production approval.[5]

Following the termination of the PBSh-1 project, Mikoyan-Gurevich’s design bureau initiated work on a successor model designated PBSh-2 in July 1940.[5][6] Unlike its predecessor, the PBSh-2 was conceived as a biplane with a reverse sesquiplane layout,[7] based on the rationale that biplanes offered superior handling characteristics and enhanced stability compared to monoplanes.[8] The design included a large lower wing featuring slight dihedral, expansive ailerons, and two-part flaps; the smaller upper wing was mounted atop the canopy with a forward sweep angle of 12 degrees. Both wings were supported by I-type struts.[8] The powerplant, central wing section, armor plating, weaponry, landing gear, and cockpit layout mirrored those of the PBSh-1, with the addition of an ejectable side door for pilot egress.[8] By late 1940, work on the PBSh-2 was discontinued due to insufficient manufacturing capacity to produce the aircraft.[8]

Variants

PBSh-1
This was the initial monoplane concept intended to rival the Ilyushin Il-2. It was never constructed.
PBSh-2
A biplane adaptation derived from the PBSh-1 design. This version also remained unbuilt.
MiG-4
In certain Mikoyan and Gurevich records, the PBSh-1 is alternatively referred to by this designation.
MiG-6
This label is used in some Mikoyan and Gurevich documents as an alternative name for the PBSh-2.

Specifications (PBSh-1, projected)

{{Aircraft specs |ref= |prime units?=met |genhide=

|crew=1 |capacity= |length m=10.145 |length ft=33 |length in=3.4 |length note= |span m=13.5 |span ft=44 |span in=3.5 |span note= |width m= |width ft= |width in= |width note= |height m=3.2 |height ft=10 |height in=6 |height note= |wing area sqm=30.5 |wing area sqft=328.3 |wing area note= |airfoil= |empty weight kg=4850 |empty weight lb=10690 |empty weight note= |gross weight kg= |gross weight lb= |gross weight note= |max takeoff weight kg=6024 |max takeoff weight lb=13277 |max takeoff weight note= |fuel capacity= |more general=

|eng1 number=1 |eng1 name=Mikulin AM-38 |eng1 type=12-cylinder piston engine |eng1 kw=1178 |eng1 hp=1600 |eng1 note= |power original=

|prop blade number= |prop name= |prop dia m= |prop dia ft= |prop dia in= |prop dia note=

|max speed kmh=441 |max speed mph= |max speed kts=238 |max speed note=at 5,000 m (16,400 ft), 449 km/h (242 kn) at sea level also recorded at 449 km/h (242 kn) |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh= |stall speed mph= |stall speed kts= |stall speed note= |max never exceed speed kmh= |max never exceed speed mph= |max never exceed speed kts= |max never exceed speed note= |min control speed kmh= |min control speed mph= |min control speed kts= |min control speed note= |range km=900 |range miles=560 |range nmi= |range note= |combat range km= |combat range miles= |combat range nmi= |combat range note= |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance= |ceiling m=7600 |ceiling ft=25690 |ceiling note= |max g limits= |max roll rate degrees per second= |max climb rate ms- |max climb rate ftmin- |max climb rate note- |max time to altitude- |max lift to drag ratio- |max wing loading kg/m2=159 |max wing loading lb/sqft=32.6 |max wing loading note- |max fuel consumption kg/km- |max fuel consumption lb/mi- |max power-to-mass ratio- |max thrust-to-weight ratio-

|more performance=

|armament=*Armament:

|}


References

  1. ↑ Belyakov & Marmain 1994, p. 45–47.
  2. ↑ 2.0 2.1 2.2 2.3 Gunston & Gordon 1998, p. 24.
  3. ↑ Belyakov & Marmain 1994, p. 45–46.
  4. ↑ 4.0 4.1 Belyakov & Marmain 1994, p. 45.
  5. ↑ 5.0 5.1 Belyakov & Marmain 1994, p. 47.
  6. ↑ Gunston & Gordon 1998, p. 25.
  7. ↑ Butowski & Miller.
  8. ↑ 8.0 8.1 8.2 8.3 [[#CITEREF|]].

Bibliography

  • Belyakov, R. A., and J. Marmain. MiG: Fifty Years of Secret Aircraft Design. United States Naval Institute, 1994. ISBN 1-55750-566-7.
  • Butowski, Piotr, and Jay Miller. OKB MiG: a history of the Design Bureau and its aircraft. Aerofax for Specialty Press, 1991. Arlington, Tex. ISBN 978-0-904597-80-6.
  • Gunston, Bill, and Yefim Gordon. MiG Aircraft since 1937. Putnam Aeronautical Books, 1998. United Kingdom. ISBN 1-55750-541-1.

Template:Mikoyan aircraft

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