Pratt & Whitney TF30, JTF10A (United States), Aero-engines - Turbofan

Overview
After a very troubled start, the first augmented turbofan to go into military service remains in service in Australia

Description
US military designation: TF30Development of this totally new engine for supersonic fighters began as a company-funded programme in February 1958. In its early years the JTF10 was developed in partnership with Snecma of France, leading to derivatives designated TF106, selected as the propulsion engine for the jet-lift V/STOL Mirage III-V, and the further-developed TF306 for the Mirage G. Both aircraft flew, but ultimately the French connection came to nothing. From the outset, this family of high-compression, two-spool turbofans posed a major challenge as the first engines in the world with full augmentation (afterburning in both the core and bypass airflows).Subsequently, in 1961 the JTF10A (more commonly known by its military designation TF30) was chosen as the engine for the General Dynamics/Grumman F-111, notable for its variable-sweep wing, for both the USAF and US Navy. Development problems were severe, a major difficulty being that the design of the advanced compressor put the operating points too close to the stall line. The US Navy withdrew from the F-111B programme, switching to the Grumman F-14 Tomcat, for which a modified TF30 was produced. Later, a simpler, unaugmented TF30 was developed for the US Navy's Vought A-7 Corsair II. Today the only operator of TF30 engines is the Royal Australian Air Force, as noted below.Numerous versions were produced, of which the following remained operational the longest:

The complete article appears in the following publication:
Publication Title	Jane's Aero-Engines
Publication date	Jan 20, 2011
Section	Aero-engines - Turbofan
Publication synopsis	Jane's Aero-Engines provides comprehensive details of all civil and military gas-turbine engines (turbofans, turbojets, turboprops and turboshafts) currently in use worldwide for the propulsion of manned aircraft, listed in alphabetical order of countries. In addition to precise diagrams and illustrations to aid understanding and recognition, you will find detailed specifications of each engine, impartially presented to aid comparison and appraisal. Insightful descriptions of the background to each engine type, plus manufacturers' details, help support your procurement and market research needs.
Key contents include	Aircraft propulsion Gas turbine technology Engine development Engine cycles Military and civil engines
Different sections provide in-depth detail covering	AERO-ENGINES - LIFTFAN AERO-ENGINES - MANUFACTURER AERO-ENGINES - PROPFAN AERO-ENGINES - TURBOFAN AERO-ENGINES - TURBOFAN/ - TURBOJET AERO-ENGINES - TURBOFAN/ - TURBOPROP/ - TURBOSHAFT AERO-ENGINES - TURBOJET AERO-ENGINES - TURBOPROP AERO-ENGINES - TURBOPROP/ - TURBOSHAFT AERO-ENGINES - TURBOSHAFT AIRCRAFT PROPULSION ANALYSIS CIVIL ENGINES ENVIRONMENTAL FACTORS GAS-TURBINE ENGINE CYCLES GLOSSARY INTRODUCTION TO AIRCRAFT GAS-TURBINE ENGINE TECHNOLOGY MILITARY ENGINES PERFORMANCE AND MANUFACTURER CHARTS TECHNOLOGICAL ISSUES IN ENGINE DEVELOPMENT

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