Aerospace Control and Guidance Systems Committee

Announcements

You must first log in to access prior meeting presentations, register for a meeting, or nominate some for the Ward Award.

If you do not have a login account, or cannot remember the email address associated with your account, please click on the Application Form link below.

Login

Site Search

Search our site:

Upcoming Events

Photos

Meeting Highlights New!

Subcommittee S

Prior Meetings

Abstracts may be viewed by anyone. Presentations are only available to active members who have logged in.

Meeting 132
(coming soon)

Home

Ward Memorial Award

Planning Advisory Board

Downloads

Constitution and By-Laws

About

History

Contact Us

← Return to agenda

Meeting	ACGS Committee Meeting 118 - Minneapolis, MN - October 2016
Agenda Location	4 GENERAL COMMITTEE TECHNICAL SESSION 4.1 Government Agencies Summary Reports 4.1.1 DLR 4.1.1.1 DLR
Title	DLR
Presenter	Klaus-Uwe Hahn
Available Downloads*	presentation
	Downloads are available to members who are logged in and either Active* or attended this meeting.
Abstract	In Europe aircraft noise is an important issue concerning environment. DLR has developed a pilot assistance system which helps pilots to execute quiet approach flights that are precise and safe, and in addition positively affect fuel consumption and pilot workload. The system is designed for Low Drag Low Power (LDLP) approaches since this procedure is the most common one in Germany. The task of the approach and landing procedure is the transition of an aircraft from cruise to landing configuration. Therefore it is necessary to decrease altitude (potential energy) and airspeed (kinetic energy) until landing configuration is established for touch down. The required successive configuration changes for aircraft landing are high lift flap settings (approach configuration „1“ and „2“, landing configuration „3“ and „4“) and gear extension. The intermediate approach altitude (min. 3000 ft above RWY threshold) is mainly used for aircraft deceleration. When the aircraft reaches the stabilization height (typically 1000 ft above RWY threshold) the high-lift landing configuration must be completely established, the gear has to be fully extended and the aircraft must fly with steady state conditions. The developed pilot assistance system provides recommendations for pilot actions based on the A/C’s energy status for aircraft configuration changes, speed reduction, flap settings and gear extension. ATC instructions like “reduce speed to . . .” or “maintain speed until . . .” can be fed into the system via touch screen. The calculations are based on performance data of the aircraft. Knowing the reference wind at the airport and at the actual aircraft position in a first step an offline planning is executed predicting the position for initiating the decent (Top of Decent) for an approach with minimum thrust levels and without the use of airbrakes. During the approach online update is performed continuously in real-time to adapt the points of aircraft configuration changes (speed settings, flaps extension, gear deployment) considering the available wind information collected onboard the aircraft. Furthermore the system considers imprecise pilot reactions on recommended actions by shifting future action correspondingly to counterbalance the actual energy situation. The system was tuned using the DLR full flight simulator AVES (Air VEhicle Simulator) representing an A320-like aircraft. The Simulator was also used for flight test preparation and pilot familiarization. Then the flight tests for the system demonstration and proving within an operational environment were executed at Frankfurt Airport using DLR’s test aircraft ATRA. All together 74 Approaches within 25 flight hours with 17 pilots from 4 German Airlines were executed within three consecutive days from 26-28th September 2016. The Flight trials were funded by the German “Gemeinnützige Umwelthaus GmbH” (Non-Profit Environmental Organization Ltd). The flight test evaluation has been initiated.