United States Military Aero Engine Designations - Turbine Engines

Turbine Engines

A turbine engine designation consists of four separate elements in the format TSS-MM-NN where T is the type letter, SS is the sequence number, MM is the manufacturer designation (one or two characters), and NN is the model number:

Type letter
J Jet engine
T Turboprop
TF or F Turbofan

The prefixes X for experimental and Y for service test are used.

Sequence number
Each type has its own sequence which started at 30.
Manufacturer designation
A Allison Engine Company
AC Allis-Chalmers
AJ Aerojet
B Buick
BO Boeing
CW Curtiss-Wright
F Ford
FF Frederic Flader
G Garrett AiResearch
GE General Electric
GN Giannini
K Kellog
L Lycoming
LA Lockheed
LD Avco Lycoming
MA Marquardt
MN Mensasco
NH Northrop-Hendy
OEL Orenda
P Pratt & Whitney / United Aircraft of Canada
R Fairchild
RM Reaction Motors
T Continental
V Packard
W Wright
WE Westinghouse
Model number
Odd numbers for the United States Air Force and even numbers for the United States Navy

For example the J79-GE-10 is a Turbojet built by General Electric and is a Navy model.

Read more about this topic:  United States Military Aero Engine Designations

Famous quotes containing the word engines:

    America is like one of those old-fashioned six-cylinder truck engines that can be missing two sparkplugs and have a broken flywheel and have a crankshaft that’s 5000 millimeters off fitting properly, and two bad ball-bearings, and still runs. We’re in that kind of situation. We can have substantial parts of the population committing suicide, and still run and look fairly good.
    Thomas McGuane (b. 1939)