Northrop Delta

Northrop Delta Mk II

DND Archives

A Northrop Delta Mk II is checked by ground crew. PHOTO: DND Archives, PL-875

Overview

Overview

In 1935, when the RCAF wanted a high performance photographic aircraft, it considered the Northrop Gamma but instead settled on Northrop’s transport version of the same aircraft, the Northrop Delta. Canadian Vickers was commissioned to build an initial four aircraft under license and these were the first all-metal stressed-skin aircraft to be built in Canada. The Delta used the same wing as the Gamma, had split flaps and a non-retractable undercarriage like its predecessors. The larger fuselage accommodated up to eight passengers. For RCAF use, the design was modified to accept three Fairchild A-3 cameras at the rear of the cabin. The cabin floor was strengthened to accept freight loads and a large, upward opening freight door was installed on the port side. Two Deltas were armed with a defensive machine gun fitted in an open hatch in the roof. A plexiglass fairing provided protection from the slipstream.  This particular installation was not very satisfactory causing buffeting and a marked decrease in performance.

Marks Mk I, II
Role Transort
Taken on strength 1936
Struck off strength 1945
Number 20
Service RCAF

Source: Canadian Combat and Support Aircraft: A Military Compendium by T.F.J. Leversedge © 2007. Translated and reproduced with permission of the author.

Technical specifications

Technical specifications

 

Manufacturer Canadian Vickers under license from Northrop
Crew / passengers Two pilots and up to eight passengers
Powerplant One 775 hp Wright SR-1820 F-52 Cyclone engine
Maximum speed 205 mph (329.8 km/h)
Cruising speed 170 mph (273 km/h)
Service ceiling 22,000 ft (6,705 m)
Empty weight 4,566 lbs (2,073 kg)
Gross weight  7,350 lbs (3,337 kg)
Span 48 ft (14.63 m)
Length 33 ft 2 in (10.11 m)
Height 10 ft 6 in (3.2 m)
Wing area 363 sq ft (33.72 sq m)
Armament Provisions for one machine gun in dorsal rear open hatch & up to 250 lb (113.5 kg) in bombs under the wings
Cost Unknown

Source: Canadian Combat and Support Aircraft: A Military Compendium by T.F.J. Leversedge © 2007. Translated and reproduced with permission of the author.

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