Pe-8 No 66 photographed after its arrival at Leuchars in May 1942, with Hurricanes of No 56 OTU in background.

Самолёты на фотографии: Aircrafts on the photo: Hawker Hurricane - ВеликобританияUnited Kingdom - 1935Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

Pe-8 No 66 photographed at Washington in front of Hangar No 20 in early June 1942. Note the open trap above the port inboard nacelle gun position and the fairing aft of the dorsal turret accommodating the stowed 20-mm cannon.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

The photograph taken at Leuchars in May 1942 show clearly the 20-mm cannon dorsal turret and 12,7-mm gun nacelle position

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

Вид на кормовую установку КЭБ-42 с 20-мм пушкой ШВАК. На хвосте нет бортового номера, его нанесут после прилета из-за границы
The photograph taken at Leuchars in May 1942 show clearly the 20-mm cannon tail turret.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

One of the Pe-8s fitted with the redesigned nose section with a gimbal-mounted 20-mm cannon replacing the twin-gun turret previously standard

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

A close-up of the second ANT-42 with the exhaust pipe for the ATsN engine being visible beneath the dorsal gun turret.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

The first prototype ANT-42 with definitive radiator arrangement photographed in 1938 while undergoing NII V-VS trials with a ski undercarriage

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

The first ANT-42 in its original form, showing the bulged fairing in the starboard side of the upper decking to accommodate the ATsN engine, which, at the time of the photograph, had still to be installed.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

The first ANT-42 after installation of the ATsN, the exhaust staining from which may be seen under the glazing in the upper decking.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

Petlyakov Pe-8

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

(Top to bottom)
The first prototype as flown in 1937 with individual radiators for its AM-34 engines.
The first prototype as modified in 1938 with radiators removed from the outer engine nacelles and incorporated in deeper inner nacelles, and venting through multiple grilles. Note revised rudder and balancing.
The second prototype with full armament and sliding dorsal panels replaced by rotating turret. Nacelle turrets of definitive design.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936

The top plan, head on and upper side drawings illustrate the standard production AM-35A-powered Pe-8 which differed from the prototypes in a number of respects, including deletion of the undernose bombing bath and replacement by contoured glazing, marginally deeper rear fuselage and lower-set tailplane, the latter dispensing with the bracing cables, the external elevator balances, the squared-off rudder tip and revised hinges and tab. It will be noted that the flight deck is offset to port. The centre sideview depicts the AM-35A-powered Pe-8 with the later nose configuration in which a gimbal-mounted 20-mm cannon supplanted the turret, and immediately above is illustrated one of the few examples of the Pe-8 that were re-engined with Shvetsov M-82 air-cooled radials.

Самолёты на фотографии: Aircrafts on the photo: Петляков Пе-8 / ТБ-7 - РоссияRussia - 1936