Calculator, air navigation

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Ingenium, 1994.0598.001
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OBJECT TYPE: dead reckoning
DATE: Unknown
ARTIFACT NUMBER: 1994.0598.001

MANUFACTURER: Felsenthal Instruments Co.
MODEL: MB-4A
LOCATION: United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: possibly aluminum; steel hub; plastic

Dimensions

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

Length: 29.7 cm
Width: 15.0 cm
Height: N/A
Thickness: 1.5 cm
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Aviation
Category: Navigation instruments & equipment
Sub-Category: N/A

Manufacturer

AKA: Felsenthal
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: Worldwide
State/Province: Unknown
Period: unknown; possibly WWII (1939-1945) to CF unification (1969)
Canada: Unknown
Function: aircraft navigation: dead reckoning is a way of navigating when there are few or no visible landmarks. A pilot uses dead reckoning when flying over large bodies of water, forests, deserts, or heavy cloud layers. Besides an aeronautical chart, a pilot needs an accurate clock and compass and a small computer for figuring complicated mathematical problems. Working with the chart, the pilot plots (plans) a route in advance. The pilot also figures how long it should take to reach the destination while flying at a constant speed. With the help of the computer, the pilot adjusts the course to allow for the effect of the wind.
Technical: Unknown
Area Notes: Unknown

Details

Markings: lettering includes: "COMPUTER, AIR NAVIGATION, DEAD RECKONING/TYPE MB-4A/SPECIFICATION MIL-C-5414E/CONTRACT NO. F34601-71-C-0561/FSN 6605-086-6693/U.S. PROPERTY/MFR'S PART NO. FAA-46D/FELSENTHAL INSTRUMENTS CO."
Missing: N/A
Finish: grey with black detail; silver & black connectors
Decoration: none

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If you choose to share our information about this collection object, please cite:

Felsenthal Instruments Co., Calculator, air navigation, Unknown Date, Artifact no. 1994.0598, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/item/1994.0598.001/

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