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Aerospace, Volume 8, Issue 3

March 2021 - 32 articles

Cover Story: The development of future helicopters is subject to the reduction of the environmental impact and the expansion of the flight envelope toward higher cruising speeds. The speed limitation is tackled by the compound helicopter RACER. Due to the high cruise speed, drag mitigation is an important topic. The rotor head represents one of the main drag sources, and the application of rotor head fairings can be an effective drag reduction measure. As part of the RACER full-fairing concept, a new blade-sleeve fairing was aerodynamically optimized for cruise flight. Within the present study, this newly developed blade-sleeve fairing is investigated by numerical flow simulations of an isolated, five-bladed rotor head featuring cyclic pitch movement. View this paper.

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Article

20 Citations

5,271 Views

11 Pages

Evaluation of the Climate Impact Reduction Potential of the Water-Enhanced Turbofan (WET) Concept

Regina Pouzolz,
Oliver Schmitz and
Hermann Klingels

Aerospace2021, 8(3), 59;https://doi.org/10.3390/aerospace8030059

25 February 2021

Aviation faces increasing pressure not only to reduce fuel burn, and; therefore, CO2 emissions, but also to provide technical solutions for an overall climate impact minimization. To combine both, a concept for the enhancement of an aircraft engine b...

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Article

13 Citations

4,036 Views

14 Pages

Harmonic Forcing from Distortion in a Boundary Layer Ingesting Fan

Hans Mårtensson

Aerospace2021, 8(3), 58;https://doi.org/10.3390/aerospace8030058

24 February 2021

Integrating a fan with a boundary layer ingestion (BLI) configuration into an aircraft fuselage can improve propulsion efficiency by utilizing the lower momentum airflow in the boundary layer developed due to the surface drag of the fuselage. As a co...

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Aerospace - ISSN 2226-4310

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