Der
zweisitzige Pe-2 war zweifellos der beste leichte Bomber der während des
2. Weltkrieges in der Sowjetunion gebaut wurde. Die Maschine erreichte
eine erstaunliche Geschwindigkeit und besaß ausreichenden Aktionsradius.
Der Bomber wurde erstmals im Winter 1940 eingesetzt. Die Folgejahre sahen
das Flugzeug in zunehmender Anzahl und in verbesserten Versionen, die
verbesserten Antrieb und Bewaffnung hatten. Der Pe-2 wurde der sowjetische
Standardbomber. Die gute Reichweite und eine brauchbare
Maschinengewehrbewaffnung machte sie zu einem geeigneten Muster zur
Erdkampfunterstützung, und ihre Flugleistung reichte auch aus, um sie als
Tag- und Nachtjäger einzusetzen; gelegentlich wurde sie sogar als
Sturzbomber verwendet. Wegen der begrenzten Anzahl wurde der Pe-2 nur
gegen die wichtigsten und am besten verteidigten Objekte eingesetzt. Viele
sowjetische Piloten erhielten Auszeichnungen für ihre Pe-2 Einsätze.
Technische
Daten:
Länge 12.45m;
Spannweite 17.16m;
Höhe 4.50m
Höchstgeschwindigkeit
581 km/h
Reichweite 1770 km
Bewaffnung: 3 x 12.70mm MG’s; 1-2 x 7.62mm
MG’s; bis zu 1000 kg Bomben und Raketen.
In order
to understand something of the way aircraft were designed in the Soviet
Union before the War a little explanation is needed here, since the design
proces of the Pe-2 is the perfect role model.
Vladimir Petlyakov was one of the best assistants of Andrei Tupolev at the
TsAGI (Tsentral'nyi Aerogidrodynamichesky Institut - Central
Aerodynamics and Hydrodynamics Institute) from 1921, and played a major
part in the creation of many Tupolev aircraft. Tupolev was a strong
believer in the use of metal structures, and Petlyakov became an expert in
light alloy structures after learning the basics of this science with
Junkers, which was the world leader in light alloy structures for aircraft
during the 1920s. Up to 1935 Petlyakov was largely responsible for the
light alloy wings of aircraft such as the TB-1 and TB-3, and in Tupolev’s
absence on the USA learning about American design concepts was wholly
responsible for the development of the TB-4 and ANT-20. In 1936 Petlyakov
was appointed manager of the
ZOK,
which was the factory for special construction attached to the TsAGI, and
as such more or less designed the ANT-42 that was later renamed as the
Petlyakov Pe-8.
In 1937 Petlyakov was arrested, possibly in relation to Tupolev’s similar
arrest for allegedly selling the design of the VI-100 fighter to
the Germans for transformation into the
Messerschmitt Bf 110
heavy fighter. Petlyakov was imprisoned at a special unit and given the
assignment of designing a high-altitude fighter under the auspices of the
KB-100 design brigade with A.M. Izakson as his assistant. Such was the
success of the design, which finally appeared as the VI-100 and formed the
basis of the Pe-2, that Petlyakov was released and installed as head of
his own design bureau in July 1940. Sadly, Petlyakov was killed in January
1942 when the second Pe-2 off the production line, which he was using as
the bureau’s liaison aeroplane, caught fire in the air and crashed.
Petlyakov was succeeded successively by Izakson, A.I. Putilov and, from
1943, V.M. Myasishchyev who were thus responsible for all later Pe-2
developments. The Petlyakov Design Bureau was closed in 1946.
The origins of the Pe-2 can be found in the VI-100 (Vysotnyi
Istrebitel-100,
or high-altitude fighter type '100') prototype that first flew in 1939 or
1940 as a cantilever low-wing monoplane of basically all-metal
construction with with the exception of its fabric-covered control
surfaces. It must be noted here that '100' is in no way a sequence number,
but merely a reference to the bureau were it was developed: STO.
STO
is also the word for the numeral '100' in the Russian language. The office
was placed inside a complex, and staffed with imprisonned designers like
Petlyakov. The VI-100 was of conventional layout but an extremely advanced
design with turbocharged engines, radiators installed in wing ducts with
four upper-surface exits rather than in exterior baths, no hydraulics but
a powerful 28-volt electrical system with some 50 actuators controlling
most of the moving parts, a pressurized cockpit with tandem two-seat
accommodation for the pilot and radio operator/gunner, a dihedraled
tailplane carrying endplate vertical surfaces and fully retractable
tailwheel landing gear including main units that retracted rearward into
the underside of the nacelles for the two wing-mounted Klimov M-105 (later
VK-105) Vee engines, rated at 1,050 hp (783 kW) for take-off each.
The VI-100 had a gun armament of four 0.3 inch (7,62 mm) ShKAS machine
guns with 600 rounds per gun in the nose, and one 0.3 inch (7,62 mm) ShKAS
trainable rearward-firing machine guns in the rear cockpit, which was
located over the trailing edge of the wing roots at some distance from the
pilot’s cockpit over the leading edge of the wing roots in an installation
that was finally unpressurised because of delays in finalisation of the
pressurised cockpit by M.N. Petrov’s brigade. The VI-100 revealed good
performance and handling, but was difficult and expensive to produce.
In May 1940 its was therefore decided that further development would be
concentrated on the PB-100 (Pikiruyushchii
Bombardirovshchik-100,
or dive-bomber type '100') with no provision for a pressurized cabin,
provision for a prone navigator/bombardier below and ahead of the pilot in
the nose below floor level, and the powerplant revised from the use of two
TK-3 turbochargers to two TK-2 turbochargers. Two armament fits were
proposed: one was based on the use of eight 0.3 inch (7,62 mm) ShKAS
machine guns as a quartet of fixed forward-firing weapons in the nose and
two pairs of trainable rearward-firing weapons installed in the dorsal and
ventral positions; and the other was based on the use of two 20 mm ShVAK
cannon and two 0.3 inch (7,62 mm) ShKAS machine guns trainably mounted in
an underfuselage box so that the weapons (located in mixed pairs at the
front and rear of the box with the cannon on the right and the machine gun
on the left) could be fired obliquely forward/rearward and at any angle of
depression to a maximum of -40°. The disposable armament was a maximum of
2,205 lb (1.000 kg) including 1,323 lb (600 kg) carried internally in a
lower-fuselage weapons bay.
The PB-100 prototype was produced as a conversion of the second VI-100
prototype, and made its maiden flight in June 1940. Later in the same
month the decision was taken for the PB-100 to be placed in immediate
production with a number of minor changes as the
Petlyakov Pe-2,
and in the following month Petlyakov and the other members of his design
team were released from detention.
The Pe-2 used basically the same airframe as the PB-100 but had revised
accommodation, M-105R Vee engines without turbochargers and installed in
different nacelles, a hydraulic actuation system for the main landing gear
units, enlarged vertical tail surfaces, and improvements to the protection
for the crew and fuel tanks. The opportunity was also taken to revise the
airframe structure as a means of facilitating mass production.
The Pe-2 was of basically all-metal construction, and its core was a
fuselage of nearly circular cross section. This carried the flying
surfaces, which comprised a dihedraled tailplane with endplate vertical
surfaces, and a low-set wing that was based on a flat center section that
was tapered in thickness and slightly in chord (the leading edges were
straight and the tailing edges marginally tapered), and carried dihedraled
outer panels that were tapered in thickness and chord. The moving surfaces
on the wing comprised the standard trailing-edge combination of outboard
ailerons and inboard flaps (the latter of the Shrenk type) and underwing
dive brakes of the Venetian blind type. These last were controlled by the
AP-1 automatic dive-control system that was later removed to allow direct
control of these surfaces by the pilot. This automatic dive-control system
is likely derived from purchased Junkers Ju 88A dive bombers. The airframe
was completed by the tailwheel landing gear, which was fully retractable
with main units that folded rearward into the underside of the nacelles
for the two wing-mounted engines.
The accommodation was centered on a large and comfortable cockpit under a
framed, glazed canopy. The cockpit was set farther forward along the upper
part of the fuselage than had been the case in the VI-100 and PB-100, and
provided accommodation for the pilot on the left with the
navigator/bombardier behind him and to the right. The navigator/bombardier
was seated facing the rear, and operated the 0.3 inch (7,62 mm) ShKAS
trainable machine gun that was the Pe-2’s main defensive weapon against
attacks from above and the rear, and for the attack phase of the mission
moved to a prone bombardier position in the glazed lower part of the
extreme nose. The other member of the crew was the radio operator/gunner
in a separate compartment to the rear of the fuselage fuel tank under a
glazed roof panel and with an oval window on each side: the defensive
weapon controlled by this man was a 0.3 inch (7,62 mm) ShKAS trainable
rearward-firing weapon in a retractable installation. The rest of the gun
armament comprised two 0.3 inch (7,62 mm) ShKAS fixed forward-firing
weapons on the sides of the forward fuselage in an installation controlled
by the pilot.
The disposable armament was normally four 220 lb (100 kg) FAB-100 bombs in
the lower-fuselage weapons bay and/or four 551 lb (250 kg) FAB-250 bombs
carried on four hardpoints under the inner wing panels, but there was also
provision for two 220 lb (100 kg) FAB-100 bombs in the rear of each engine
nacelle.
The powerplant initially comprised two Klimov M-105RA Vee engines, rated
at 1,100 hp (820 kW) for take-off each, and driving a three-blade VISh-61
metal propeller of the constant-speed type. These engines were supplied
with fuel from five rubberized fabric tanks (one in the fuselage, two in
the inner wing panels and two in the outer wing panels) that were inerted
by cooled engine exhaust gases (against fire or explosions). The fuel
capacity originally totaled 239 Imp gal (287 US gal, 1.086 liters) but was
later increased to a total of 326 Imp gal (392 US gal, 1.484 liters) by
enlarging the fuselage tank and adding three new tanks (one in the center
section and two in the outer wing panels outboard of the original tanks).
The nickname 'Peshka' ('Little
Pe'
or
'Pawn')
was applied to the aircraft both by the industry and the air force. I can
only guess for the real reason of the name, except that the other major
design of Vladimir Petlyakov was the Pe-8 (TB-7). This four-engined bomber
was huge, dwarfing the Pe-2 (and Pe-3 which had the same ancestor as the
Pe-2).
Version list:
·
Petlyakov Pe-2FT
·
Petlyakov VI-100
·
Petlyakov PB-100
·
Petlyakov Pe-3
versions
Further
pictures:
Petlyakov Pe-2 in full flight
Petlyakov Pe-2 ready to take off (front view)
Several Petlyakov Pe-2's ready to take off (side view).
Technical
data on the Petlyakov Pe-2FT |
Powerplant |
2 × Klimov VK-105PF Vee, rated at 1260 hp (939.32 kW)
each |
|
Role during war |
-
(Ground) Attack Fighter
-
Fighter-bomber
-
Long range (attack) Fighter
-
Light Bomber
-
Dive Bomber
-
Reconnaissance Aircraft
|
Length |
41
ft 11 inch |
|
Height |
11
ft 2.67 inch |
Empty weight |
13119 lb |
|
Operational weight |
17130 lb typical,
18783 lb max |
Wing Span |
56
ft 1.67 inch |
|
Wing Aspect ratio |
7.23 |
Wing Area |
435.95 sq ft |
|
Service ceiling |
28870 ft |
Maximum speed |
360
mph at 13125 ft |
|
Cruising speed |
298
mph at 16405 ft |
Initial climb rate |
Climb to 16,405 ft in 9 min 18 sec |
|
Range |
817
miles typical,
1100 miles max |
Fuel capacity internal |
326
Imp gal (392 US gal) |
|
Fuel capacity external |
- |
Machine guns |
-
1 or 2 × 0.3 inch ShKAS fixed
forward-firing in the nose
-
1 × 0.5 inch Beresin UBS fixed
forward-firing in the nose
-
1 × 0.3 inch ShKAS trainable
rearward-firing in the MBV-3 dorsal turret
-
1 × 0.3 inch ShKAS or 1 × 0.5 inch
Beresin UBT trainable rearward-firing in the ventral position
-
1 × 0.3 inch ShKAS or 1 × 0.5 inch
Beresin UBT trainable lateral-firing in either of the two window
positions
|
|
Cannons |
- |
Bomb load |
Up to 3,527 lb of disposable stores carried in a
lower-fuselage weapons bay rated at 882 lb, in two engine nacelle
weapons bays rated at 220 lb each, and on four underwing hardpoints
rated at 551 lb each.
General disposables load consisted of:
-
4 × 551 lb FAB-250 bombs in weapons
bay
-
6 × 220 lb FAB-100 bombs at the other
positions
|
|
Torpedoes/rockets |
- |
Crew |
4: pilot, navigator/bombardier, radio operator/gunner,
gunner |
|
Naval or ground based |
Ground |
First flight (prototype) |
end
1939 |
|
Operational Service |
1941
- early 1950's |
Manufacturer |
Petlyakov Design Bureau |
|
Number produced |
11.427 total including all Pe-2 variants, unknown
number this version |
Length |
12.78 m |
|
Height |
3.42
m |
Empty weight |
5951
kg |
|
Operational weight |
7770
kg typical,
8520 kg max |
Wing Span |
17.11 m |
|
Wing Aspect ratio |
7.23 |
Wing Area |
40.5
m² |
|
Service ceiling |
8800
m |
Maximum speed |
579
km/h at 4000 m |
|
Cruising speed |
480
km/h at 5000 m |
Initial climb rate |
Climb to 5.000 m in 9 min 18 sec |
|
Range |
1315
km typical,
1770 km max |
Fuel capacity internal |
1.484 liters |
|
Fuel capacity external |
- |
Machine guns |
-
1 or 2 × 7,62 mm ShKAS fixed
forward-firing in the nose
-
1 × 12,7 mm Beresin UBS fixed
forward-firing in the nose
-
1 × 7,62 mm ShKAS trainable
rearward-firing in the MBV-3 dorsal turret
-
1 × 7,62 mm ShKAS or 1 × 12,7 mm
Beresin UBT trainable rearward-firing in the ventral position
-
1 × 7,62 mm ShKAS or 1 × 12,7 mm
Beresin UBT trainable lateral-firing in either of the two window
positions
|
|
Cannons |
- |
Bomb load |
Up to 1.600 kg of disposable stores carried in a
lower-fuselage weapons bay rated at 400 kg, in two engine nacelle
weapons bays rated at 100 kg each, and on four underwing hardpoints
rated at 250 kg each.
General disposables load consisted of:
-
4 × 250 kg FAB-250 bombs under the
wings
-
6 × 100 kg FAB-100 bombs at the other
positions
|
|
Torpedoes/rockets |
- |
Here is a
quick overview of all different versions, without the full technical
specifications:
Different
versions of the Petlyakov Pe-2 Peshka |
Petlyakov VI-100 |
The Petlyakov Pe-2
started as a high-altitude fighter, designed by Petlyakov while being
in prison. Thanks to the bombing-equipment fitted to this fighter, it
could be used as a attack aircraft and bomber as well. Beginning March
1940 it was decided to build ten VI-100 (Visotnyi
Istrebitel-100
- High Altitude Fighter type '100') aircraft at Factory Plant No. 18.
However, another design, the Polikarpov SPB dive domber, turned out to
be disappointing, and the VVS (Voenno-vozdushniye
Sily
- Russian Air Force) turned out to be in need of a tactical bomber and
attack aircraft. In the meantime some aircraft purchased in Germany
were received, amongst which some Junkers Ju 88 that had already
proven to be very succesfull in France. The leaders of the VVS decided
that they needed an aircraft as such and Petlyakov was asked to
redesign the VI-100 into the PB-100 (see below).
The VI-100 was powered by 2 × Klimov M-105, rated at 1,050 hp (783 kW)
each, Length was 41 ft 7.5 inch (12,69 m), wingspan was 56 ft 3 inch
(17,15 m), wing area was 439.1 sq ft (40,8 m²). Weights of the
aircraft were 12,978 lb (5.887 kg) empty, 15,837 lb (7.200 kg)
typical. It had a max level speed of 283 Mph (455 km/h) at sea level,
and 334 Mph (538 km/h) at 21,650 ft (6.600 m) altitude. The VI-100 was
armed with in total 2 × 20 mm cannon and 3 × 0.3 inch (7,62 mm) guns.
Number
built: unknown |
Petlyakov PB-100 |
The redesign of the
VI-100 to an attack aircraft and dive bomber resulted in the PB-100 (Pikiruyushchii
Bombardirovshcik-100
- Dive Bomber type '100'). The decision to reprofile the VI-100 as a
PB-100 was taken on June 4, 1940, on the same day as the decision to
build the Bsh-2 (later Ilyushin Il-2) and the Tairov OKO-6 armoured
fighter.
45 days were alloted to Petlyakov and his team to carry out the
necessary redesign, which was almost a new aircraft type. A huge
amount of overhours were clocked to get the design and drawings ready
in time, only to find out that none of the appointed factories that
were to build the PB-100 was ready to do so. There was no test
aircraft, only a wooden mock-up. Nevertheless it had to go into
production right away.
There were more problems, since the PB-100 was really advanced for
it's time, with a two-spar wing with very thin duralumin skinning,
automatic dive-brakes and 56 electrical actuators to power the various
moving parts in stead of the standardly used hydraulical installations
on other aircraft. All these problems resulted in a significant delay,
and the first real Pe-2 was flown December 15, 1940. The designation
was then changed to Pe-2 according to new nomenclature ruling.
Number
built: none (see Pe-2) |
Petlyakov Pe-2 |
As the first PB-100 was
rolled out it was renamed in Pe-2. The first five aircraft were
produced in such a hurry that they were built with the armament in
mock-up form, and were used to test and improve the concept of the
Pe-2.
The first trials didn't go well at all, every other flight ended in an
emergency landing because of problems with the propellers. On top of
that the shock absorbers were constructed wrong, making the aircraft
bounce on landing. Aircraft from Plant No.39 revealed 187 defects, and
aircraft from Plant No.22 did a little better with more than 100. A
lot were solved quickly, others took some longer, and the last group
became specific for the Pe-2 and were never solved. One of the major
topics on this last list were the wing's aerofoil sections. These were
originally in accordance with TsAGI (Tsentral'nyi
Aerogidrodynamichesky Institus
- Central Aerodynamic and Hydrodynamic Institute) specialist built for
the VI-100. However, the Pe-2 was no high altitude fighter, yet the
wing remained the same. Although the wing possessed a very good
lift-to-drag ratio and a constant aerodynamic center over a wide speed
range, the problem lay in it's stalling angle at low speeds. It was a
mere 11°, and was asymetrically, resulting in a disaster when the
aircraft wasn't handled with care during slow speeds and turns.
On the positive side, the aircraft posessed an excellent speed
enabling the aircraft to make a quick escape when attacked. This
improved the survivability greatly, especially at the beginning of the
Great Patriotic War as the Russians called their combat period of
World War 2.
The Pe-2 originally was able to carry other disposables than only
bombs, being the K-76 cassette and K-100 cassette. The K-76 cassette
contained 76,2 mm tailless fused projectiles, but these turned out to
be too dangerous to be used. On release they would frequently flip
over and fly back at the aircraft. The K-76 was dropped from the
possible inventory almost immediately. The K-100 was loaded with
fragmentation bombs of AO-2.5 to AO-10 type. This performed
unsatisfactory as well. Later new bombing cassettes were fitted to
carry a large number of small bombs, being the KMB-Pe-2. Thiis
cassette's load was able to destroy unprotected area targets like
camps, unarmoured colonnes aand others.
Also the early 0.3 incch (7,62 mm mm) guns were inadequate to deliver
a big punch, or defend the aircraft. Therefor some guns were replaced
by 0.50 inch (12,7 mm) guns, doubling the firepower.
Some Plants (Nos.16 and 32) had fitted rocket projectiles under the
wings. A salvo was 10 × RS-132 air-to-ground rockets, and had a
destructive power not slightly to be overlooked. However, this
installation reduced maximum level speed significantly, by 15 to 19
Mph (25 to 30 km/h) with the rockets, and 22 to 28 Mph (35 to 45 km/h)
with the rockets installed.
Other survivability issues addressed with increased armour protection
for the crew and redesigned fuel tanks. The armor protection
especially for the rear gunners needed upgrading, since operational
experience showed that ten gunners were wounded for every pilot, and
two to three gunners were killed for every pilot. The protective
screens were enlarged but only protected against rifle calibre guns,
not cannon shells. The fuel tanks were redesigned by filling the voids
with inert gas. At first nitrogen was used, but this was not readily
available at the front often. Later the tanks were filled with cooled
exhaust emissions, and the system could be turned on and off by the
crew.
Since the Pe-2 was born out of a fighter design, it was initially
fitted with a fighter-type joystick. The forces on the control
surfaces were too high however, and it was replaced by a bomber-type
control collumn. Some Duralumin components were additionally replaced
by steel examples fr the same reason.
One of the biggest problems that the Pe-2 had to cope with was the
steady decrease of speed of newly produced aircraft. This was caused
by the increase in weight, the fall in production standards (unskilled
men, women and young children were drafted to work in the factories),
and the change in the shape of the navigator's gun mounting.
Number
built: unknown. |
Petlyakov Pe-2F |
To counter the drop in speed as experienced with the
Pe-2, Petlyakov proposed changes to be made on it. Simultaneously
other changes were proposed as well to improve other characteristics
of the aircraft. The new powerplant consisted of 2 × Klimov M-105F,
and although this engine was more powerfull tests showed that the
aircraft was only marginally faster than the Pe-2. Max level speed was
347 Mph (560 km/h) at 23,000 ft (7.000 m) instead of the anticipated
372 Mph (600 km/h). Also the superchargers fitted with this engines
were not automatically controlled, and proved to be a sinecure for the
pilots.
Another powerplant version was 2 × Klimov M-107. This engine was even
trickier to operate than the M-105F, since it was still being
developped. Every other test flight ended with an emergency landing,
and it was decided not to proceed any further with this engine.
Besides all these engine tests the structure of the aircraft was
changed. The Pe-2 as a dive bomber had a low wing structure, and the
center section spars prevented the weapons bay to be loaded with bombs
of 551 lb (250 kg). To overcome this the fuselage was lowered,
effectively making the bomber a mid-wing aircraft able to carry 2 ×
551 lb (250 kg) FAB-250 bombs or 1 × 1,102 lb (500 kg) FAB-500 bomb
internally.
The Pe-2 also produced a reconnaissance version. This version had the
air brake grids removed, the fuel tank was suspended inside the
weapons bay, and additional tanks were suspended under the center
section. With improved skinning, M-105RA engines and polished wing
surfaces this version possessed a range of 1,550 miles (2.500 km) It
was fitted with the standard AFA-B camera, as well as two AFA-1
cameras and one AFA-27T in the radio operator's cockpit. For night
operations an NAFA-19 replaced the AFA-B and to provide lighting six
to eight FOTAB-50-35 photoflash bombs were carried.
Number
built: unknown. |
Petlyakov Pe-2FT |
The
Pe-2 was inadequately defended in the rear quarter of the aircraft.
Pilots from the front regularly complained that the 0.3 inch (7,62 mm)
ShKAS gun didn't have enough firepower. When mass production of the
new Pe-2 was underway the engineers of Plant No.22 finally had time to
work out a solution.
L. Selyakov, together with three other engineers designed a new
mounting for a 0.50 inch (12,7 mm) UBT gun, using components of the
MV-2 hatch mounting. This product replaced the TSS-1 mounting and was
called
FT,
after
Frontovoye Trebovaniye
- Front Requires/Front Task. The downside was that the navigator's
cockpit with the new mounting was permanently open, forcing the
navigator to endure extreme cold in the winter. Great care had been
taken to ensure relative simple installation of the new gun-mount,
requiring only four to six hours by two specialists in the field.
It was realised from the beginning that the FT mounting would only be
temporary, and further development on the upper mounting continued.
The UBT was first fitted with a constant belt feed as opposed to 2
ammunition boxes. This was called the
'Torov-mounting',
or
VUB-1
or
B-270.
The production VUB-1 received the UBK gun in stead of the UBT, fitted
with pneumatic recharging and an electrical belt feed. The original
belt-feb UBT often suffered a broken belt because of the strong forces
in play.
Some aircraft were fitted, as far as availability permitted, with 2 ×
Klimov M-105PF Vee, rated at 1,260 hp (940 kW) for take-off each.
Besides this som eaerodynamic refinements were introduced as well.
Number built: unknown. |
Petlyakov Pe-2 with M-82 |
Plant No.22 was working on an M-82 radial powered Pe-2
since this engine had a higher power output. Problems with the cooling
of the engines frequently led to dangerous situations, and at a
certain time it was decided that test flights would end in a landing
with the engine switched off. Part of the problem was the poor quality
of the oil cooler radiators, which were poorly soldered. The radiator
honey-combs were blocked because of the soldering, and the oil went
round the cooling system via the bypass valve. Despite these problems
32 of the 100 ordered were finished, and accepted for operational
duties.
Number
built: 32 |
Petlyakov Pe-2A |
This version was the first step in a major improvement
program for the Pe-2. During the development of the Pe-2F Vladimir
Petlyakov was killed in a flying accident (probably due to a snow
storm) in Februari 1941. Since then work was continued with other
engineers. In the summer of 1943 Vladimir Myasishchev took over the
design bureau at Plant No.22 and first continued with the M-82 powered
Pe-2. After that the improvement program was set into motion. The
improvements would include:
-
Changing the empennage. The rudders
became cut through, the teeth of the tail plane were enlarged, which
reduced the drag in level flight.
-
A new cockpit canopy
-
The water radiators were enlarged and
the shape of the intake tunnels improved.
-
The exhaust collectors were
positioned closer to the cowlings, and the intakes of emission were
retracted inside of the wing and cowl of the engine
-
The RDK-10 frame was installed in the
wood forward of the Fuselage F1, and the antenna became a sinle wire
(only to starboard fin)
-
The external bomb racks were
relocated inside the wing
Some of the innovations tested were introduced into the
production line, and as a result the max level speed becan to rise
steadily.
Number
built: 32 |
Petlyakov Pe-2B |
With the Pe-2B the improvements program entered the
second phase. the main difference was the powerplant: 2 × Klimov
VK-105PF Vee, rated at 1,180 hp (880 kW) at altitude each. Further
aerodynamic changes were applied, and a new combined pilot's and
navigator's cockpit was installed. Also, the wooden wing ordered for
the VI-100 was used. This wing had a NACA 230 section and the area was
increased by 26.9 ft² (2,5 m²). This reduced wing loading, improved
take-off and landing characteristics, and reduced the tendency of the
Pe-2 to fall in a corkscrew at low speeds.
Max level speed obtained by the Pe-2B was 331 Mph (534 km/h) at 12,800
ft (3.900 m).
Other sources claim that the Pe-2B was the standard bomber version
from 1944 with a number of structural and system improvements as well
as a gun armament of 3 × 0.5 inch (12,7 mm) Beresin machine guns and 1
× 0.3 inch (7,62 mm) ShKAS machine gun. It might even be so that the
same designation was applied to different aircrafttypes, depending on
what engineers bureau had changed a Pe-2 version and given it a
desination. This goes for the Pe-2I as well (see below). I must say
that the Russian way of designating aircraft isn't fully clear to me
.
Number
built: unknown. |
Petlyakov Pe-2RD |
Like some other Russian aircraft, the Pe-2 was at some
stage of the war also tested with a rocket engine. The Pe-2 No.15/185
had a RU-1 rocket installed in the rear fuselage in the summer of
1943. This rocket (RU-1 or RD-1, I'm not sure) delivered a thrust of
661 lb (300 kg) at sea level, and was ignited elctrically (later
chemically). Fuel of the rocket consisted of kerosene and nitric acid.
The aircraft was 37 to 40 Mph (60 to 65 km/h) faster at medium
altitudes, but since the rocket engine had only a brief endurance and
was unreliable the aircraft was never produced in series.
Number
built: unknown. |
Petlyakov Pe-2MV |
This version was the attack fighter variant, and was
armed with 2 × 20 mm ShVAK fixed forward-firing cannon and 2 × 0.5
inch (12,7 mm) Beresin fixed forward-firing machine guns in the front
of a ventral gondola replacing the weapons bay, and a single 0.3 inch
(7,62 mm) ShKAS trainable rearward-firing machine gun in an MV-3
dorsal turret.
Number
built: unknown. |
Petlyakov Pe-2FZ |
This version was
delivered in small numbers during 1943. The
Frontovoye Zadaniye
(front-line task) variant was a revised version of the Pe-2FT with no
nose accommodation and an FZ dorsal turret armed with two 0.5 inch
(12,7 mm) Beresin trainable rearward-firing machine guns.
Number
built: unknown. |
Petlyakov Pe-2R |
This
was the
Razvyedchik
(reconnaissance) day reconnaissance version of the Pe-2 with three or
four vertical and oblique cameras installed in the lower fuselage and
an AK-1 automatic course-control system for maximum accuracy. The type
was powered by 2 × Klimov M-105PF Vee engines, had an armament of
three 0.5 inch (12,7 mm) UBS machine guns, and could also carry two 32
Imp gal (38 US gal, 145 liter) drop tanks on the inboard underwing
hardpoints for a maximum range of 1,056 miles (1.700 km).
It might be that the reconnaissance version of the Pe-2F was the same
aircraft as this version, but simply with another designation
Number built: unknown. |
Petlyakov Pe-2UT |
The
Uchyebno Trenirovochnyi
(advanced trainer) variant was the conversion and operational trainer
model, otherwise known as the
Pe-2S
or
UPe-2,
that retained full weapons load capability but introduced a second
cockpit, complete with duplicated instruments and controls, to the
rear of the standard cockpit.
Number
built: unknown. |
Petlyakov Pe-2S |
Another designation for
the
Petlyakov Pe-2UT.
I don't know where the 'S' stands for, although in most cases it would
denote
Skorostnoy
(high speed).
Redesignated aircraft. |
Petlyakov UPe-2 |
Another designation for the
Petlyakov Pe-2UT.
The prefix 'U' is probably short for
Uchyebno Trenirovochnyi
(advanced trainer)
Redesignated aircraft. |
Petlyakov Pe-2D |
This was a version that built further on the Pe-2F with
lowered fuselage. It was powered by 2 × Klimov M-107A, and was fitted
with the F3 cockpit and canopy
Number built: unknown. |
Petlyakov Pe-2M-1 |
This was also a version that built further on the Pe-2F
with lowered fuselage. It was powered by 2 × M-1 Vee rated at ,1350 hp
(1.007 kW) at ground level and 1,300 hp (969 kW) at 20,400 ft (6.200
m) each. The M-1 engine was developed by specialists at Plant No.16,
and was based on the M-105. It had the same dimensions like the M-105
but cylinders with a wider diameter.
Aircraft powered with this engine could reach 357 mph (575 km/h) at
altitude, but unfortunately the M-1 was not put into production.
Number
built: unknown. |
Petlyakov Pe-2I |
There are two versions
of the Pe-2 designated as
Pe-2I.
One was the
Istrebitel
(fighter, or litterally
destroyer)
and is described on the separate
Petlyakov Pe-3
page.
This version however was not a pure fighter, but very versatile
indeed. It was based on the Pe-2F, and powered by 2 × VK-107A engines.
It could carry a bigger bomb load because of the mid-wing
configuration. Also it was configured as a two-seater, with a
remote-controlled mounting for a UBK gun (identical to the VI) in the
tail. The wing structure was changed to that of the Pe-2B, with a
significantly higher angle of attack.
The Pe-2I had a very good performance: a max level speed of 407 mph
(656 km/h) at altitude and 343 mph (552 km/h) at sea level. It could
cliimb to 16,400 ft (5.000 m) in 7 min 6 sec, and had a range of 1,317
miles (2.120 km).
Because of it's versatility and speed it was also often described as
the
Soviet Mosquito,
or the
Pe-2I Mosquito
after the British fighter/bomber/reconnaissance aircraft. The only
failings of the Pe-2I was the poor take-off and landing
characteristics and the often not completed remote-control gun mount
whose production turned out to be very cumbersome.
Number built: unknown. |
Petlyakov Pe-2M |
This version would have been the next production
version, but it was not to be. The pe-2M was a simplified version of
the Pe-2, but with heavier defensive armament. Thsi would consist of 1
× UB-20 fixed rearward-firing cannon and 2 × UB-20 trainable
rearward-firing cannon in the navigaotr's and gunner/radio operator's
position.
Number
built: 4 |
Petlyakov Pe-2K |
This version was again based on the Pe-2, but was
fitted with rocket-assisted take-off gear. It was built in only small
numbers
Number built: unknown. |
Petlyakov Pe-3 versions |
These versions are described on a different page,
although the Pe-2 and Pe-3 share the same forefather.
|
Operational remarks:
The
Pe-2 first entered service in April 1941, just in time before 'Operation
Barbarossa', the German attack on the Soviet Union - or not?
Unfortunately, there was only a small number of Pe-2 available at the
moment of the German surprise attack. 306 Aircraft were built by the end
of May 1941, and hardly any pilot was converted to it yet. Such was the
urgency for a tactical bomber that some units were thrown into battle
while they wer still unfamiliar with the Pe-2, having flown a mere circuit
or two.
This, combined with the bad take-off and landing characteristics caused
quite a few accidents in the beginning (and later still). Also a lot of
production and design errors were still in the aircraft, decreasing their
ready status. Some units lost 20 crews in a month, a very high casualty
rate. This was due to inexperience with the aircraft, insufficient
defensive armament, a great risk of fire, and insufficient crew
protection.
Not all was bad, though. Once in flight the aircraft handled good, and was
able to perform dive bombings (only shortly because of problems with the
dive brakes) and act as a bomber and/or attack aircraft. When the Germans
launched their offensive at Moscow the crews were becoming experienced,
and could perform their tasks much better. Also, aircraft started to be
fitted with rocket launchers and other disposables enabling them to attack
armored and non-armored vehicles and colonnes, slowly grinding the German
Moloch to a halt. The rocket launchers were especially popular in the
Moscow region. Sometimes the rockets were even pointed backward, and were
fired when enemy fighters had settled on the tail of the aircraft. When
confronted with a salvo of 4 or 8 rockets every pilot would break off, and
would at least need some extra time again to settle in once more. This was
not standard practice, however, and it was not widely used.
And although the defensive armament was insufficient, it still could be
used effectively once in a while. Some units reported that small groups of
Pe-2's had succesfully parried the attacks of enemy Messerschmitt
Bf-109's, and shot down 2 of them while suffering no losses.
The Pe-2 performed a number of effective raids, one of such was an attack
on the oil fields of Ploesti, Romania. After only a few days of training
on their new Pe-2's, 6 Aircraft of the 40th Air regiment of the southern
wing of the Black Sea fleet embarked on their mission. At least a quarter
of a million tons of oil products were destroyed during the raid, and the
sea was on fire for three days. The Romanian information agency claimed
that at least 100 Soviet aircraft had bombed Ploesti. Funny enough, the
Romanians had misidentified the Pe-2's and thought they were friendly
aircraft. Escorting aircraft were correctly identified as enemy aircraft,
as was their own Flak (!).
Other ways in which the Pe-2 was used was during German night raids. a
Pe-2 armed with a big searchlight would sometimes be able to catch an
enemy bomber in the beam. Fighters would then be able to see it and close
in on it, and ultimately destroy it. Althoug this in itself was not so
succesfull, the psychological consequences were. Once caught in a beam
most enemy bombers would drop their bombs and high-tail it for friendly
air space.
All in all, the Pe-2 was, after it's hard introduction, a popular aircraft
because of it's speed and versatility, used effectively, and was produced
in impressive numbers.
Strengths:
·
Good performance
·
Excellent
versatility
·
Good
survivability in combat
·
Weaknesses:
·
Bad
handling at take-off and landing, causing many crashes and casualties
·
Insufficient defensive armament, especially early aircraft
·
Insufficient bombs load to use it effectively as a standard bomber
|