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F-14 Air Data Computer (SCADC2)

Technical Information

Catalogue No: C0159
Category: Air Data
Object Type: Signal/Data Processor
Object Name: F-14 Air Data Computer (SCADC2)
Part No: 50-085-01
Serial No: SP.M.01
Manufacturer: GEC Avionics
Division: Instrument Systems [ISD]
Platform(s): F-14 Tomcat 
Year of Manufacture: Unknown
Dimensions:
Width (mm):
218 
Height (mm):
158 
Depth (mm):
509 
Weight (g):
10,100 
Location: Main Object Store
Inscription(s):

G.E.C. Avionics Ltd
Cmptr. Air Data. CPU-175/A
PN 50-085-01
Mfr K0656
DsgnAct K0656
NSN
Contr
SerNo SP.M.01

Notes:

This unit is a derivative of the SCADC family but is the Central Air Data Computer CPU175/A designed for the F-14 Tomcat. This is Serial No. SP.M.01.

In 1981 Instrument Systems Division began the design of a new generation of Air Data Computers designed for the combined USAF and USN Standard Central Air Data Computer (SCADC) programme. The system was designed to fulfil the retrofit requirements of 38 different aircraft types and to do so with only four configurations. The aircraft types include the following:-

A-4M and TA-4J Skyhawk, A-6E/F, KA-6D and EA-6A Intruder, EA-6B Prowler, TC-4C Gulfstream, A-7D/E/K and TA-7C Corsair II, C-2A Greyhound, E-2C Hawkeye, KC-135 Stratotanker, C-5A/B Galaxy, C-141A/B Starlifter, F-111A/E/D/F, FB-111A, EF-111A, F-4C/D/E/G/J/N/S, and RF-4B/C Phantom and the S-3A/B and US-3A Viking. In 1992 an order for a further 290 units was received, being the eighth option, bringing the total procured to 5552 units. 387 units of the SCADC system were at this time being supplied for the F-14 Tomcat.

The high commonality was achieved with a unique software re-configurable design. Output parameters, ranges and scalings are selected for each aircraft type by the software, which recognises the host from a code wired into the aircraft connector pins. The SCADC core hardware set provides over 80% of the hardware in every application and the remainder is addressed by one or two special-to-type modules. A multiplicity of analogue interfaces can be handled and the Mil-Std 1553 DataBus is also a feature. Production commenced in 1985 with first deliveries the following year and in 1989 these deliveries surpassed 4,000 units. In addition in 1988 ISD received the Queen’s Award for Technological Achievement for SCADC.

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