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Electric flight – emission-free, with a new look and quieter

Elec­tric flight – emis­sion-free, with a new look and qui­eter

November 26, 2019  Elec­tric flight com­bines sev­er­al ad­van­tages; it is lo­cal­ly emis­sion-free, qui­eter, and makes com­plete­ly new mo­bil­i­ty op­tions pos­si­ble.

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Image 1/14, Credit: DLR (CC-BY 3.0)
The low-speed wind tunnel

The low-speed wind tun­nel at Braun­schweig

January 2, 2019  On 2 De­cem­ber 2010, the Ger­man Aerospace Cen­ter (Deutsches Zen­trum für Luft- und Raum­fahrt; DLR) opened the world's most pow­er­ful aero-acous­tic wind tun­nel in col­lab­o­ra­tion with Ger­man-Dutch Wind Tun­nels (Deutsch-Nieder­ländis­che Wind­kanäle; DNW). Sci­en­tists use wind tun­nels to in­ves­ti­gate the aero-acous­tic prop­er­ties of ob­jects such as air­craft en­gines and wings. Not on­ly is the Braun­schweig wind tun­nel one of the most pow­er­ful of its kind, but al­so it is so ver­sa­tile that it can be used for cars as well as planes. This presents new pos­si­bil­i­ties in which to record and re­duce sources of noise pol­lu­tion.

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Image 2/14, Credit: DNW.
Air intake chamber

Tak­ing care of tur­bu­lence

January 2, 2019  What looks like a wind tun­nel is ac­tu­al­ly an air in­take cham­ber. En­gine re­searchers use the 16-me­tre-long, eight me­tre- di­am­e­ter en­clo­sure to re­move tur­bu­lence from air be­fore it reach­es the com­pres­sor of an en­gine dur­ing test­ing. This al­lows them to achieve op­ti­mal and re­peat­able con­di­tions for their ex­per­i­ments.Fans and com­pres­sors are im­por­tant re­search top­ics at the DLR In­sti­tute of Propul­sion Tech­nol­o­gy by rea­son of the great in­flu­ence they ex­ert on the per­for­mance of en­gines and their noise emis­sions. The re­searchers are work­ing on new de­signs for ax­i­al and ra­di­al com­pres­sors, and ver­i­fy­ing their mul­ti­dis­ci­plinary de­vel­op­ment tech­niques us­ing pro­to­types. The mul­ti-shaft com­pres­sor test fa­cil­i­ty, shown in this im­age be­ing pre­pared for a test, is es­sen­tial for this pro­cess.

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Image 3/14, Credit: DAAD / Lannert.
Hot gas microphone probes in a helicopter engine

Hot gas mi­cro­phone probes in a he­li­copter en­gine

January 2, 2019  For the mea­sure­ment cam­paign, a se­ries of mi­cro­phones were po­si­tioned at var­i­ous places in­side the en­gine and around the ex­haust area and record­ing their sig­nals si­mul­ta­ne­ous­ly. These sig­nals formed the ba­sis for the acous­tic field anal­y­sis.

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Image 4/14, Credit: DLR (CC BY-NC-ND 3.0)
Fan blades on the DLR test system

Fan blades on the DLR test sys­tem

January 2, 2019  The fan blades on the Ul­tra High By­pass Ra­tio (UH­BR) test sys­tem at the DLR In­sti­tute of Propul­sion Tech­nol­o­gy.

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Image 5/14, Credit: DLR (CC BY-NC-ND 3.0)
High-speed helicopter RACER

High-speed he­li­copter RAC­ER

January 2, 2019  The new he­li­copter mod­el of Air­bus He­li­copters can fly at speeds of up to 400 kilo­me­tres per hour thanks to DLR re­search.

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Image 6/14, Credit: Airbus Helicopters-PAD.
Computer-assisted flow simulation

Com­put­er-as­sist­ed flow sim­u­la­tion

January 2, 2019  DLR is play­ing a key role in the aero­dy­nam­ic de­sign of the wings and the tail plane of the RAC­ER high-speed he­li­copter.

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Image 7/14, Credit: DLR (CC BY-NC-ND 3.0)
Virtualisation of an aircraft

Dig­i­tal­i­sa­tion and vir­tu­al­i­sa­tion in avi­a­tion

January 2, 2019  The new DLR In­sti­tute of Soft­ware Meth­ods for Prod­uct Vir­tu­al­i­sa­tion in Dres­den will pool the skills re­quired to un­der­take the first com­plete vir­tu­al air­craft flight in the long term.

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Image 8/14, Credit: DLR (CC BY-NC-ND 3.0)
The 'Freespace Experimental Laser Terminal II'

The 'Freespace Ex­per­i­men­tal Laser Ter­mi­nal II'

January 2, 2019  At­tached to the un­der­side of DLR’s Dornier DO 228-212 re­search plane – the ‘Freespace Ex­per­i­men­tal Laser Ter­mi­nal II’ for da­ta com­mu­ni­ca­tions be­tween the air­craft and the ground. Nu­mer­ous mea­sure­ments were tak­en with the sys­tem. The rel­e­vant prop­er­ties of the at­mo­sphere were de­ter­mined in or­der to op­ti­mise the da­ta trans­mis­sion sys­tems.

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Image 9/14, Credit: © DLR. All rights reserved
Four-passenger fuel cell aircraft

First flight of four-pas­sen­ger fu­el cell air­craft

January 2, 2019  In Septem­ber 2016, HY4, the first four-seater pas­sen­ger air­craft pow­ered sole­ly by a fu­el cell sys­tem, em­barked on its first flight from Stuttgart air­port.

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Image 10/14, Credit: DLR (CC BY-NC-ND 3.0)
HALO research aircraft in flight

HA­LO re­search air­craft

January 2, 2019  The HA­LO (High Al­ti­tude and LOng Range) re­search air­craft is based on the ul­tra-long-range G 550 busi­ness jet pro­duced by Gulf­stream Aerospace. With a range of more than 8000 kilo­me­tres, mea­sure­ments on the scale of con­ti­nents are pos­si­ble; the re­search air­craft can reach all re­gions, from the poles to the trop­ics, and re­mote ar­eas of the Pa­cif­ic Ocean.

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Image 11/14, Credit: DLR (CC BY-NC-ND 3.0)
DLR research aircraft Falcon

DLR re­search air­craft Fal­con

January 2, 2019  The Fal­con is the on­ly re­search air­craft in Eu­rope that is legal­ly able to fly at high al­ti­tudes and over long dis­tances in vol­canic ash clouds.

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Image 12/14, Credit: DLR (CC BY-NC-ND 3.0)
DLR ATRA research aircraft in flight

DLR ATRA re­search air­craft

January 2, 2019  The Air­bus A320-232 'D-ATRA' (Ad­vanced Tech­nol­o­gy Re­search Air­craft) is the largest mem­ber of the DLR re­search fleet.

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Image 13/14, Credit: DLR/Evi Blink (CC-BY 3.0).
Two planes in flight

Joint re­search flights over Ger­many

January 2, 2019  NASA’s ‘air­borne lab­o­ra­to­ry’ flies close be­hind the DLR A320 Ad­vanced Tech­nol­o­gy Re­search Air­craft (ATRA), fly­ing through the Air­bus’ ex­haust plume. On board, sci­en­tists mea­sure the com­po­si­tion of the ex­haust stream and anal­yse the ef­fects of bio­fu­els like HEFA on the for­ma­tion of soot par­ti­cles and ice crys­tals.

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Image 14/14, Credit: DLR/NASA/Friz.

DLR develops solutions for current and next generations of technology. With its research expertise in the overall air transport system, DLR is pursuing the goal of designing well-founded proposals for the generation after next and thus opening up new perspectives for aviation

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