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Adaptive Compliant Trailing Edge (ACTE) is a research project on shape-changing flaps for aircraft wings, intended to reduce the aircraft's fuel costs and reduce noise during take-off and landing. It is a join effort by NASA and the U.S. Air Force Research Laboratory[1] and first airborne tests have been conducted in late 2014.

Test aircraft with ACTE flaps. The flap itself (here extended to 20 degrees deflection) is smoothly bendable and does not open gaps in the wing surface. Also the two triangular gaps between the flaps and the fixed wing are bridged by flexible material.
Test aircraft with ACTE flaps. The flap itself (here extended to 20 degrees deflection) is smoothly bendable and does not open gaps in the wing surface. Also the two triangular gaps between the flaps and the fixed wing are bridged by flexible material.

ACTE flaps close the gaps present in conventional flaps using flexible material, generating a continuous bendable surface. As of 2015 enhanced hinged wing flaps (which fold out from under the wing's trailing edge and are used on most jets) are studied. A Gulfstream III business aircraft of the AFRL has been equipped with flaps from FlexSys Inc. and is performing airborne flight tests since 7 November 2014.[2][3] FlexSys Inc., a company founded by Prof. Kota in 2000, is dedicated to develop the concept of a flexible aircraft wing and received US$40 million in financial assistance from the Air Force's small business innovation research program. According to FlexSys the technology helps in fuel savings of 4% to 12% [4] and noise reduction during takeoff and landing by up to 40%.[5]


See also



References


  1. "Adaptive Compliant Trailing Edge Flight Experiment". NASA. 10 March 2014. Retrieved 29 January 2015.
  2. "NASA Tests Revolutionary Shape Changing Aircraft Flap for the First Time". NASA. 7 November 2014. Retrieved 8 December 2014.
  3. "NASA eyes revolutionary aircraft wing technology". Fox News. 10 November 2014. Retrieved 8 December 2014.
  4. "FlexSys's wing flaps promise to save fuel". Bloomberg.com. 20 November 2014. Retrieved 29 January 2015.
  5. "Kota's FlexFoil Technology Gains Recognition". Retrieved 14 December 2014.

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- [en] Adaptive compliant trailing edge

[ru] Adaptive Compliant Trailing Edge

Adaptive Compliant Trailing Edge (ACTE) (рус. Гибкая задняя кромка адаптивного крыла) — проект по созданию новой технологии деформируемой задней части крыла самолёта, способной выполнять роль традиционного закрылка. Конструкция изгибающейся бесшовной поверхности позволит оптимизировать полётные характеристики самолёта на всем протяжении полёта. В частности, применение ACTE может сократить расход топлива на 4–12 %[1] и снизить уровень шума во время взлёта и посадки на 40 %[2]. В ноябре 2014 года ВВС США совместно со специалистами НАСА провели воздушные испытания нового адаптивного крыла на модифицированном бизнес-джете Gulfstream III  (англ.) (рус..


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