General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Circular white synthetic calculator with metal center ring.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

10.0 cm

Volume

N/A

Lexicon

Group

Aviation

Category

Navigation instruments & equipment

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

Used on the Canadair CL-44 / CC-106 Yukon during the 1960's.

Canada

This weight and balance type style calculator was likely used by RCAF pilot Donald Gilchrist while training on and flying the CC-106 Yukon. Gilchrist served with the RCAF from 1950 to 1973 and training on the Yukon in 1967. The Canadair CL-44 / CC-106 Yukon was a Canadian turboprop transport and cargo aircraft operated by 437 Squadron and 412 Squadron during the 1960's. This weight and balance calculator was produced especially for the Yukon, as weight and balance calculators are unique to individual aircraft, with numbers and calculations adjusted for that specific aircraft.

Function

Used to determine the gross weight, fore, aft and centre of gravity of airplane depending on the load and loading condition to ensure that gross weight is not excessive and ensure controllability and stability of the airplane.

Technical

The circular slide rule style of this weight and balance calculator would allow users to quickly calculate the weight and centre of gravity while flying. Circular slide rules are also advantageous over traditional slide rules as the dimension of the tool is greatly reduced, allowing users to easily carry it in a pocket or on their person. Weight and balance calculators were useful on cargo planes because of varying fuel and cargo loads and distributions.

Area Notes

Unknown

Details

Markings

The calculator reads in part: " WEIGHT TIMES /. 1000 (LBS) /. ALL SPEEDS INDICATED (IAS) /. YUKON /. SPEEDS COMPUTED FLAPS 15° SEA LEVEL /. COMPILED BY F/L BANYARD /. GRAPHIC ARTS BY DEME

Missing

Appears complete.

Finish

Circular synthetic calculator with a grey / green backing. The edge of the calculator has a white backing. The calculator has black text and numbering. The center of the calculator has a bronze coloured metal ring.

Decoration

N/A