<< stealth aircraft | steep approach | steep descent >>
Back to: "S"
steep approach
- Fonte1
- FEDERAL AVIATION ADMINISTRATION. Helicopter flying handbook (FAA-H8083-21A). Washington, DC: FAA, 2012.
- Nota Adicional1
- A steep approach is used primarily when there are obstacles in the approach path that are too high to allow a normal approach. A steep approach permits entry into most confined areas and is sometimes used to avoid areas of turbulence around a pinnacle. An approach angle of approximately 13° to 15° is considered a steep approach.
- Contexto
- Given the concerns of the pilot community with flying a steep approach all the way to the runway, there is considerable doubt as to whether the benefits of approaches much above 3.2 degrees for current design turbojet aircraft will be operationally feasible. In those cases where steeper approaches may be feasible, they will probably have to be part of a two segment approach where the airplane transitions to a standard 3 degree glide path, as in this study, at distances of about 13,000km (approximately eight miles). As with CDO, the benefit of steep approaches will be outside the normal threshold of significance (usually DNL 65) and will probably only affect the 50 or possibly the 55 DNL contour. Because the IEOGG did not find any research that quantified the benefit of steep approaches in terms of reductions in populations affected at various DNL contours or reduction in contour area, and because of the feasibility concerns with steeper approaches, the IEOGG did not include this technique in its estimation of operational noise goals.
- Subárea
- Phase of Flight
- Broader Term
- approach
- Français
- approche à forte pente