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P&W Outlines New Plan for F-35 Engine Upgrades
by Chris Kjelgaard
- June 13, 2018, 3:03 PM
Pratt & Whitney has changed its proposed upgrade path for the F135 engine powering the F-35 Lightning II stealth fighter. It is now offering two stages of improvements over a four-year period, compared with the three-stage, 10-year plan ending with a completely new engine that it revealed a year ago. The stages are labeled Growth Option 1.0 and 2.0 and include greater thrust, lower fuel burn, and better thermal management.
Matthew Bromberg, president of P&W Military Engines, told AIN that since last year, P&W has combined the informally labeled “Growth 1A” thrust-increase option for the F-35B STOVL version within the overall Growth Option 1.0 package. This package offers 10 percent more thrust than the F135’s current nominal 40,000 pounds and 5 percent better fuel burn. But for the F-35B, P&W is working with Rolls-Royce to also provide a 5 percent increase in vertical thrust during the hover.
P&W previously described Growth Option 2.0 as an all-new production engine that would result from its adaptive-cycle research and development under the U.S. Air Force Research Laboratory Advanced Engine Transition Program (AETP). Both General Electric and P&W are working on engineering, manufacturing, and development (EMD) contracts from the Pentagon for the AETP, which could power a sixth-generation fighter aircraft.
Rest of the article at: https://www.ainonline.com/aviation-news/defense/2018-06-13/pw-outlines-new-plan-f-35-engine-upgrades
by Chris Kjelgaard
- June 13, 2018, 3:03 PM
Pratt & Whitney has changed its proposed upgrade path for the F135 engine powering the F-35 Lightning II stealth fighter. It is now offering two stages of improvements over a four-year period, compared with the three-stage, 10-year plan ending with a completely new engine that it revealed a year ago. The stages are labeled Growth Option 1.0 and 2.0 and include greater thrust, lower fuel burn, and better thermal management.
Matthew Bromberg, president of P&W Military Engines, told AIN that since last year, P&W has combined the informally labeled “Growth 1A” thrust-increase option for the F-35B STOVL version within the overall Growth Option 1.0 package. This package offers 10 percent more thrust than the F135’s current nominal 40,000 pounds and 5 percent better fuel burn. But for the F-35B, P&W is working with Rolls-Royce to also provide a 5 percent increase in vertical thrust during the hover.
P&W previously described Growth Option 2.0 as an all-new production engine that would result from its adaptive-cycle research and development under the U.S. Air Force Research Laboratory Advanced Engine Transition Program (AETP). Both General Electric and P&W are working on engineering, manufacturing, and development (EMD) contracts from the Pentagon for the AETP, which could power a sixth-generation fighter aircraft.
Rest of the article at: https://www.ainonline.com/aviation-news/defense/2018-06-13/pw-outlines-new-plan-f-35-engine-upgrades
