Hermann LIESE FLUGTECHNIK                                                            April 2001

LIESE-Muffler Systems for Light Aircraft

Small, light and effective!

                        No loss of Power!

 

Our new Silencer system uses a totally new principle of noise reduction without any moving parts or loose damping materials.

 

The silencers are really small and fit inside existing mufflers of most General Aviation Aircraft,

f.i. Cessna 152, -172, -182 and -210.

For aircraft without mufflers of suitable diameter we have developed small endpipe slilencers,

f.i. Cessna-150, Piper PA-28, PA-38 and Mooney M-20.

 

The additional weight due to our silencer typically is less then 2 lbs.

 

With the LIESE-Silencer we meet the strict german noise limits and in most cases achieve noise levels

of 5 to 6 dB(A) below the german limit.

 

Some examples of measured noise levels with LIESE-Silencer ( Annex 16, Chapter X ):

 

Aircraft Type               Meas. Noise Level       German Noise Limit                 ICAO Noise Limit

                                                                                                               old                  new

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Cessna-150-M            66,1 dB(A)                  71,8 dB(A)                  78,7 dB(A)      73,7 dB(A)

Cessna-172-N            70,1 dB(A)                  77,2 dB(A)                  83,8 dB(A)      79,4 dB(A)

Cessna-210-F             78,6 dB(A)                  85,0 dB(A)                  88,0 dB(A)      85,0 dB(A)

Piper PA-28-181        74,1 dB(A)                  79,2 dB(A)                  85,3 dB(A)      81,0 dB(A)

Piper PA-38                67,3 dB(A)                  72,4 dB(A)                  79,3 dB(A)      74,4 dB(A)     

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Already we are holding more than 60 EMZ’s ( german STC’s ) for the most common types of General Aviation Aircraft with more than 250 certified noise values for different Models, Engines and Propellers.

  

LIESE-Silencer for Cessna 172:

 

 

For the following types of A/C we can offer LBA-certified LIESE-Silencer-Systems.

The german LBA certification (EMZ) is the equivalent of the american STC.

The approval of a german EMZ ( STC ) depends on the local regulations of each country.

Beech-33, -35 und -36 ( all Versions with Conti. IO-520 )

                        Beech "Baron" ( non Turbo ), Beech "Duke"

                        Beech-A23(A)

                        Britten Norman BN-2 ( with 260 und 300 HP )      

                        Bölkow BO-209-150/160 "Monsun"

                        Bölkow-208 "Junior"

                        Cessna-150 to C-(F)150-M

                        Cessna-(F)152

                        Cessna-170/172 with Conti O-300

                        Cessna-(F)172-K to -P ( Lyc. O-320 )

                        Cessna-172-R ( "new" C-172 with Lyc. IO-360 )

                        Cessna-FR172 "Rocket" and "Hawk XP"

                        Cessna-172 RG and C-177 RG "Cardinal"

                        Cessna-(F)182-A to -R ( Conti. O-470-L, -R, -S, -U )

                        Cessna 182 S

                        Cessna-210-D to -R  ( Conti. IO-520 with 285 and 300 HP )

                        Fuji FA-200-160 and -180

                        Grumman AA-5, AA-5-A, AA-5-B and AG-5-B

                        Jodel DR-250/160, 360, 400/140 and 400/160 ( Lyc. O-320 )

                        Jodel DR 253B, DR300/180R, DR400/180, DR400/180R

                        Mooney M20-B to -J ( Lyc. O-360 and IO-360 )

                        Mooney M20K ( Mooney 231 )

                        Morane MS-880 and Rallye 100 S-D and ST-D

                        Morane MS-892, MS-893

                        Morane MS-894

                        Navion H 

                        Piaggio (FW) P 149

                        Piper J3C/L4 ( Conti. C-65 bis C-90 )

                        Piper PA-18 with Conti C90, Lyc. O-290, Lyc. O-320

                        Piper PA-28-140 to -181 incl. Archer III ( Lyc. O-320 u. O-360 )

                        Piper PA-28-R180 to -RT201

                        Piper PA-32 ( 300 HP )

                        Piper PA-38 "Tomahawk"

                        Rockwell 112

                        Rockwell 114 and 114-A

                        Socata TB-9 with 2-Blatt Hartzell or 3-Blatt MT-Constant-Speed-Prop.