iLOADS
Integrierte Lastanalyse im DLR / Integrated Loads Analysis
Mission status: Completed
Persons in Charge
Mission-PI
- Wolf-Reiner Krüger, German Aerospace Center (DLR), Institute of Aeroelasticity
- Julian Sinske, German Aerospace Center (DLR), Institute of Aeroelasticity
- Yves Govers, German Aerospace Center (DLR), Institute of Aeroelasticity
Contact point at DLR-FX for this mission:
HALO Project Management:
Postal address:
DLR Oberpfaffenhofen
Flugexperimente (FX)
Münchener Str. 20
82234 Weßling
Germany
Office phone:
+49 (0)8153 28-1357
HALO Deployment Base
Time Period
iLOADS deployment: March 29 – April 29, 2016
Project description
Each aircraft modification needs to be analyzed numerically and experimentally to guarantee the structural integrity of the aircraft in each flight condition. Maximum loads for gust encounters and the aeroelastic stability are determined from numerical models which are validated by following flight tests.For flight tests the aircraft and its external stores are instrumented with acceleration and strain sensors to monitor vibration and load levels for different flight conditions. To reduce cost and time for flight testing, fast decisions from engineers inside the aircraft during a test flight are needed when going from one flight condition to the next.
The DLR Institute of Aeroelasticity in Göttingen, Germany, has developed a real-time procedure to analyze aircraft vibrations from atmospheric turbulence and impulsive pilot controls directly in flight. These methods allow the simultaneous identification of various aircraft parameters which are necessary to evaluate the aeroelastic stability, and, at the same time, are dependent on the flight condition, like eigenfrequencies, mode shapes and damping ratios. The fast interaction between analysis software and the measurement system also allows for an instantaneous maneuver loads analysis.
DLR's PMS wing stores on HALO
The departments of Loads Analysis and Aeroelastic Design and of Structural Dynamics and Aeroelastic System Identification will test the new methodologies in 13 flight hours with HALO equipped with the DLR PMS carriers. The campaign is performed within the DLR project iLOADS. Focus is on the support of the DLR processes for loads analysis and aeroelastic stability analysis, as well as on certification aspects of the HALO aircraft with external stores.
HALO mode shape
Partners
- German Aerospace Center (DLR), Institute of Aeroelasticity
- German Aerospace Center, Flight Experiments (DLR-FX)
HALO flights for this mission
| Aircraft registration | Date | Take off - Landing / UT | Total flight time / h | From - To | Mission # |
|---|---|---|---|---|---|
| D-ADLR | 2016-04-12 | 13:48:00 - 16:31:00 | 2.717 | EDMO - EDMO | 1 |
| D-ADLR | 2016-04-14 | 13:35:00 - 15:21:00 | 1.767 | EDMO - EDMO | 2 |
| D-ADLR | 2016-04-18 | 13:10:00 - 16:31:00 | 3.350 | EDMO - EDMO | 3 |
| D-ADLR | 2016-04-19 | 07:46:00 - 09:52:00 | 2.100 | EDMO - EDMO | 4 |
| D-ADLR | 2016-04-21 | 05:08:00 - 08:03:00 | 2.917 | EDMO - EDMO | 5 |
HALO flight tracks
Press releases, media etc
Integration of sensors into HALO DLR-type
PMS wing carrier
During the ground vibration test the aircraft
was excited with random and swept-sine vibrations
HALO during taxi vibration test