A close-up of a very large cannon fitted in the nose of a Fortress IIA. It appears to be a 40mm weapon to be used against U-boats. A cabin for the gunner has been built in under the nose.
The serial is not know and several Fortress IIs went to the A&AEE for trials. Somewhere we have seen a reference to these experiments but it refuses to come to light. The use of heavy cannon against U-boats was the subject of several trial runs. The 'E' would seem to indicate that the aircraft had previous operational service.

Самолёты на фотографии: Aircrafts on the photo: Boeing B-17E / B-17G Flying Fortress - СШАUSA - 1941

The serial K3012 gives this one away. It is a Hart with a Pegasus, skis and a cabin and was photographed in Canada

Самолёты на фотографии: Aircrafts on the photo: Hawker Hart - ВеликобританияUnited Kingdom - 1928

RATOG fitted to a Catalina; it burnt holes in the perspex beam bulges!

Самолёты на фотографии: Aircrafts on the photo: Consolidated PBY Catalina - СШАUSA - 1935

Swordfish K5926 is prepared for launching from a catapult and the photograph is dated September 1941.
Crane-fanciers may recognise the structure from which K5926 is dangling and so identify where the photograph was taken. In the background are Skuas and a Lysander. Note that the engine is already running while a tight rein is being kept on the wings. In place of the gunring, a headrest is fitted. Personnel would appear to be all RAF.

Самолёты на фотографии: Aircrafts on the photo: Blackburn Skua / B-24 - ВеликобританияUnited Kingdom - 1937Fairey Swordfish - ВеликобританияUnited Kingdom - 1934Westland Lysander - ВеликобританияUnited Kingdom - 1936

Уже позже - во время испытаний с расположением вооружения под фюзеляжем - XA847 был оснащен гаргротом. Кроме того, изучались способы экстренного торможения самолета в песке и пене полистирола, тогда пришлось дополнительно защитить воздухозаборник.
A Lightning, presumably the one now residing in the RAF Museum, during experiments into halting overshooting fighters

Самолёты на фотографии: Aircrafts on the photo: English Electric / BAC Lightning - ВеликобританияUnited Kingdom - 1957

Dismantled Wellesley L2657 as 4712M

Самолёты на фотографии: Aircrafts on the photo: Vickers Wellesley - ВеликобританияUnited Kingdom - 1935

God in shorts approaches to enquire what this item is doing on his nice clean deck. A Swordfish after a heavy landing but where and when?

Самолёты на фотографии: Aircrafts on the photo: Fairey Swordfish - ВеликобританияUnited Kingdom - 1934