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Aerodynamical Study of a UAV Launch from a Military Transport Aircraft

Goerttler, Andreas and Schnepf, Christian (2021) Aerodynamical Study of a UAV Launch from a Military Transport Aircraft. In: 20. STAB-Workshop - Jahresbericht 2021, pp. 63-64. 20. STAB-Workshop 2021, 16.-17.11.2021, Göttingen, Deutschland.

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Official URL: https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/STAB-Jahresbericht-2021.pdf


In this study unsteady Reynolds-Averaged Navier-Stokes simulations (URANS) have been carried out with the DLR TAU-code for a controlled airdrop of one full scale-UAV from the loading platform of an airborne transport aircraft. The URANS simulations have been tightly coupled with a flight mechanic (FM) tool in each time step to capture the dynamics of the UAV during the airdrop. The general procedure of the investigated airdrop is to accelerate the UAV on the loading platform and release it backwards in downstream direction. The influence of the orientation of the acceleration vector determined by the launch mechanism and the release velocities will be investigated in detail in this study. In addition, the influence of the initial alignment of the UAV with respect to the loading platform is analyzed in terms of a safe separation and aerodynamic stability. In general, the study was performed for angles of attack of the transport aircraft of α = 0°, α = 2°, α = 4° at an altitude of FL030 and an indicated airspeed of 130 kts, which corresponds to a Mach number of about 0.208.

Item URL in elib:https://elib.dlr.de/144117/
Document Type:Conference or Workshop Item (Speech)
Title:Aerodynamical Study of a UAV Launch from a Military Transport Aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Goerttler, AndreasAndreas.Goerttler (at) dlr.dehttps://orcid.org/0000-0002-8315-1298
Schnepf, ChristianChristian.Schnepf (at) dlr.deUNSPECIFIED
Date:16 November 2021
Journal or Publication Title:20. STAB-Workshop - Jahresbericht 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 63-64
EditorsEmailEditor's ORCID iD
Series Name:Jahresbericht
Keywords:Aerodynamics, UAV, Launch
Event Title:20. STAB-Workshop 2021
Event Location:Göttingen, Deutschland
Event Type:Workshop
Event Dates:16.-17.11.2021
Organizer:DLR, STAB
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Defense Technology
DLR - Research theme (Project):L - Effect
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Goerttler, Andreas
Deposited On:05 Jan 2022 15:22
Last Modified:07 Apr 2022 16:59

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