Pratt & Whitney TF30

Pratt & Whitney TF30

The Pratt & Whitney TF30 was a turbofan with low bypass ratio for combat aircraft. It was built by Pratt & Whitney originally for the subsonic F6D Missileer the Douglas Aircraft Company developed. After the project was canceled, Pratt & Whitney redesigned the TF30, equipped it with an afterburner and readjusted it for the supersonic F-111 . After the first machine with the TF30 took off in 1964, the engine was produced until 1986 and was still used on the F-14 Tomcat and the A-7 Corsair II .

The TF30 was the first turbofan engine with an afterburner that was built in series production and put into service.

history

The development of the TF30 can be traced back to 1958, when Douglas designed a new commercial aircraft. As a four-jet model, this was intended to supplement the DC-8 on short routes and was initially given the identifier "Model 2067". For that Pratt & Whitney offered the JT8A - Turbojettriebwerk on, however, Douglas had early on decided on a turbofan engine (turbofan). Turbofans were still new developments at this time and were not even available to civil aviation, but experience from the military sector has already shown that significantly higher fuel efficiency can be achieved with them compared to turbojets, of which Douglas in turn is better Hoped for profitability. Pratt & Whitney began designing the JT10A in April 1959, a derivative of the JT8D turbofan that was being developed at the same time. P&W took over the core of the JT8D, but Douglas abandoned the "Model 2067" in 1960 after the US airlines preferred the Boeing 727 .

After the "Model 2067" was phased out, the US Navy selected the JT10A for the F6D Missileer, for which the engine has now been given the designation TF30-P-1. The F6D should be able to operate as an interceptor up to 6 hours away from the aircraft carrier, for which the fuel-efficient TF-30 engine was required. But the project was also discontinued in April 1961. Now General Dynamics has shown interest in the TF30 for the TFX program. To do this, Pratt & Whitney had to rework the engine, as an afterburner is now required. Ultimately, the TF30 was put into service on the F-111 with the US Air Force and with the US Navy on the F-14 Tomcat.

variants

• JT10A
• XTF30-P-1
• YTF30-P-1
• TF30-P-1
• TF30-P-1A
• TF30-P-2
• TF30-P-3
• TF30-P-5
• TF30-P-6
• TF30-P-6A
• TF30-P-6C
• TF30-P-7
• TF30-P-8
• TF30-P-9
• TF30-P-12
• TF30-P-14
• TF30-P-16
• TF30-P-18
• YTF30-P-100
• TF30-P-100
• TF30-P-408
• TF30-P-414
• JTF10A-7
• JTF10A-10
• SNECMA / Pratt & Whitney TF106
• SNECMA / Pratt & Whitney TF306

Technical data (TF30-P-100)

• Length: 6.14 m
• Diameter: 1,240 mm
• Weight: 1,807 kg
• Compressor:
  • axial
  • 3 fan
  • 6 low pressure levels
  • 7 high pressure stages
• Turbine:
  • 3-stage low pressure turbine
  • single-stage high pressure turbine
• Maximum dry thrust: 64.77 kN
• Maximum afterburner thrust: 111.65 kN
• Total pressure ratio: 19.8
• By-pass ratio: 0.878: 1
• Turbine inlet temperature: 1,176 ° C
• Thrust-to-weight ratio: 6.0

Web links

Commons : Pratt & Whitney TF30  - Collection of Pictures, Videos and Audio Files

• Pratt & Whitney TF30