EFTA01734638.pdf

Grulfstream OUNERAL DYNAMICS COMPANY MEMORANDUM Check Boxes as Appropriate Action ❑ Date: May 2, 2008 Information Only Reply Requested ❑ To: Jeff Schuh cc: Andy Slater, Tom Rothermel, Knute Pedersen, Beckey Elliott, John Maxon, Joe Salamone. Randy Grovenstien, Andrew Malluck John Louis, Michael Brinley From: Charles Roberts, II Job #AC-08-45 FS-A/V-08-45 Subject: Cabin Noise Survey Results on G550, Serial Number 5176 Attachments: Detailed Cabin Noise Results Introduction A cabin noise survey was conducted on 19 March 2008 on G550 s/n 5176 by GAC's Acoustics & Vibration group. This aircraft is owned by Cristen Limited EACE and was outfitted at GAC's completion center in Appleton. WI. Test Item The test item is a completed 6550 with a custom interior that includes a forward galley and an enhanced acoustics package. The aircraft has an aft and a forward lavatory. The passenger cabin has 18 seats, including club seating with a forward divan for six at Windows 3 and 4. standard club seating for four at Windows 5 and 6, and private double aft divans at Window 7 and aft. A standard pocket door is separating the vestibule and passenger cabin. A second pocket door was located between Windows 6 and 7 separating the forward and aft passenger cabins. An ultraleather material was used for the headliner, and PSU's. A leather material was used for the cabin seats, and a decorative fabric was used to cover the dado panels and window panels. The divan was covered is a cloth finish. Cabin Noise Metrics SIL's are the speech interference levels measured in decibels. defined as the arithmetic average of the un-weighted 1000 Hz, 2000 Hz, and 4000 Hz octave band sound pressure levels. The dB(A) levels are the summation of sound pressure over all frequencies after the W weighting is applied. The reference level is 20 pPa. Engine/Aircraft Settings The aircraft was operated in normal, level flight at 45,000 feet, 0.80 Mach. An doors and gaspers were closed. During the survey there were no turns, banks, climbs, or descents. The engine speeds, EPR setting, and vibration at the start of the survey were: Left Engine Right Engine EPR 1.58 1.58 N1 % 86.5 86.3 N2 % 88.1 87.9 LP EVM 0.18 0.14 HP EVM 0.01 0.05 Total fuel at the time of the survey was 13700 lbs. The cabin pressurization was at a differential of 10.11 psi during the cabin noise survey. The SAT was -52°C and the pressure from the left and right ECS pats 20 psi each. Job #AC-08-45 1 GAC AcousticsNibration FS-AN-08-45 5/2/2008 EFTA_R1_00013025 EFTA01734638 0u1fstream A GENERAL DYNAMICS COMPANY MEMORANDUM Data Acquisition Cockpit noise levels were measured at a point midway between pilot and co-pilot at ear level. The passenger cabin on Aircraft 5176 is defined as seated positions from Window 3 through to the aft lavatory door. Noise levels at window positions and other areas were measured at the seated head height of an occupant, including the lavatories, except for the vestibule and galley. The passenger cabin door, the aft lavatory door, the baggage door, and all interior doors and curtains were closed during the survey. A recording of sound pressure was taken at each location using a B&K 2250 Sound Level Meter. Data consisted of an eight-second recording of un-weighted sound pressure at each position. The time needed to complete the cabin noise survey was approximately 20 minutes. Data Reduction The recorded data was reduced using a B&K 2250 Sound Level Meter. Eight-second averages were taken at each measurement position over a one-third-octave band center frequency range from 25 Hz to 10,000 Hz. Both one-third octave and octave band data were generated. The A-weighted noise levels were calculated from the one-third octave band data. Speech Interference Levels (SIL's) were calculated from the octave band data. Results The cabin noise data shows the passenger cabin averages at 70.4dB (A) and 46.3 dB SIL. The engine fan tone is above 93.0 dB in the private aft cabin in the Window 7 area. A fan trim balance was recommended to reduce the engine noise in the private aft cabin. The fan trim balance was performed on the right engine but there was no opportunity to acquire cabin noise data after the balance. Aircraft 5176 satisfies all GAC acoustic requirements for cabin noise surveys. Attached are the detailed summary table and chart of the sound measurement at each location in the aircraft. Job #AC-08-45 2 GAC AcousticsNibration FS-AN-08-45 5/2/2008 EFTA_R1_00013026 EFTA01734639  GULFSTREAM AEROSPACE CORPORATION Cabin Noise Survey Summary Aircraft Model: 0550 Aircraft S/N: 5176 Customer Olsten Limited EACA Completion Site: Appleton Test Date: 3/19/2008 Altitude: 45000 ft Airspeed: Mach 0.80 Location dB(A) SIL Cockpit Cana 68.7 61.9 Jump Scat Center 71.5 60.3 Vestibule Aft 72.5 64.9 Fwd Galley Fwd 70.4 60.1 Crew Rest Area 67.1 54.9 Fwd Lavatory 68 4 53.8 Window 3 Lell 67.7 46.5 Window 3 Right 68.6 46.6 Window 4 Left 68.1 45.6 Window 4 Right 67.9 45.3 Window 5 Left 70.9 46.1 Window 5 Right 68.3 45.4 Window 6 Left 68.2 45.8 Window 6 Right 70.5 45.8 Window 7 Left 74.9 47.0 Window 7 Right 75.6 46.9 Aft Row Left 71.7 47.5 Aft Row Right 72.5 47.6 Lavatory Center 78.4 58.0 Lavatory RH 75.7 56.6 Baggage Center 81.7 65.3 Passenger Cabin Average 741.4 46.3 dB(A) A-Weighted Sound Pressure level SIL = Speech Interference level ( 1. 2. 4 kHr ) Job flAC-08-45 FS-AN-06-45 CAC ACOOISCIOnbf€01 512/2008 EFTA_R1_00013027 EFTA01734640  Results of Noise Survey for A/C5176 G550 s/n 5178 Passenger Cabin Test Date: 03/19/08 Averages: 90 Altitude: 45000 tt Speed: Math 0.80 08(A): 70.4 Comp. Site: Appleton S11: 48.3 Customer: Cristen Limited EACA 80 70 m 60 16 rt >. <a To rg. S TO I Ci 3 —•—dB(A) I o g rt (T1 ii- o. > <4 —e—SIL E 50 Fwd Galley Aft 40 ROCM' NOD M1 30 20 0 0 "WI Job MC-08-45 FS-A/V-08-45 GAC AcousticsNibration 5/1/2008 9ZOCL000Ld-Vidg EFTA01734641  II II II II ll EFTA_R1_00013029 EFTA01734642 EFTkR1_00013030 EFTA01734643 EFTA01734644 LEOCLOOO LdVid3 .Aii.:04/;(40.4 09:51 ,10 l!!!2!"Itit 4 t ' ' slit t:/11:Ititsi SttItt!T!T VIII! Si IViliiiilifjiii l ' I- ii tt III III I ; 11111 A iA l II! I iiiiiiiiii[11111111 _:_r_lijiiiiiiiiiiiiirdiiii --15 Iiiiillillilitil l!!!! Ii€illitiiitiiiii#tit ti' ti- it iii , A lit. , ti 1111111 _r _IIIIIIIIIIIIIII 11111 Illjall IIIIIIIIIIIIIIIIIIIII _ IP i i JII IIIMI iii iiii ii i i iii itic a IIIIIIIIIIIIIII 11111111 IIIIIIIIIIIIIIIIIIIII 1 IP i ii 1 ,_ I ii ii i 1 11 .1 ig 4 Alit i __ i .1IIIIIIIIIIIIIIIIIII IIIIIIIJI IIIIIiilliIIIIIIIIIIIIIII0 i III . !!!! •1. ..... . 1 . II" Ill still III II II IIIII I I 1 It Hill 14 III II II IIIII --I i i it WI] -Pi 1 illi I Il i, flu 1 1_,_ 0 tit 0 1 a 6M46 OOO OOO.OO a e vii '-117 A dFFF IP E V N I a A a a 7a a a S IA I/ iarvM CRISTEN LIMITED , G.P2/ 0 Gulfstrearn O0 r• A VII • W4C., NOW. DESIGN DRAWING INDEX Gr5.1.14 'an T i  Ont. -C• :41,14.no• .-- e •••• • , .. ......-.;:r.<:,‘6.-,4.--;•;,-; - •••••-a•-ai---j "14'1'a • •.•K.**,,, .2311114., MrtfiStit -.... a•arta , 1,ra,c•-••••• -iita-4-2L:: . „nr411 I... •°' ---- tar: 7X, an S. ec :a ".• • .. anFtaas...1:3. ••• " :di; . . .4.n: Z: Zeno; &At. ;*.rea 4:4rz 1 gas ....Arme.... F.-4ra tt--"t vs- Ie._ teee ay • yak nen ern nen. eV M1 ee enat•• n S c••••O• \ atallorli lag to 4a %Owe <•••••••• -C, SSE , LrVA 11.". t O.* • •;latZ 44-j .1" C•mn...y.4 '1Wattl • ?Hiatt nen r••••••• cosi:ter I form SI ed..* - • -• •••••'" +MOO.% mil vial C CRAP. a"•••••• s 33z:-;""*I C.•••••• IPS liala DC..e.su Men 3 Z a na0Z.I. l 111 n a., • nW. rani' , I." ft anli •I MS nias Par e4h:ti .4ar 0 ..24111v, warns 1eplat; ••=1030e4 a.. Stint OOP -4 y r 2•.• I sal - - — . - —. 4-- - .• — _ — . aim 4 r I • .V. V V — 0 • al 0 • . W . ..% I ,••,.. r I IS 27.51 -. 6 \ ••••St /4/07 tt j .trochtzpia. LL. SIDE E_EYA•tx. 014/5r-41- 1-4; eyog /of DEC f 2 Hy31 CILJSMOIVIT UOCL000- Ld- Vida EFTA01734645  as c.I4 savoiletEn 1NOUSBOd DNIFILUM - NVIdli0011:1 WI: qPf 1Y —i 09901- - anfien wand' on SfilVILS a3±mn num Itrearismnio e 'O1 1O/9O/9O II WI I LP EFTA_R1_00013033 EFTA01734646 EFTA01734647 VEOC L000 I.d-Vidg /.,•,/,), 10147.40 WEIN Nto girt ' trioN ;i14 I! e: - i i ili 4ii 66%eq ii I I q u li I I i iA 55 IE o-1 i-- • -1 I J !-- • 1'I r ! :- r- -- 1 1 i ;I ;1 21 L:1 rf g g IOW # 1411:40 Ky. %twit W iltOw• PM 00/12/07 CRISTEN UMRID _ — . Gulfstream T.B.D. —• ' 01-3 A .4' .13$304 3W/: VW FLOoRRL0N - CARPET LAYOUT OW a CCMtioswl V. 3 Of I -- EFTA01734648 GEOEL000 LdVid3 . 04 IE. 00/15/00 0/.38.19 c4) LINK Gulfstream CRISTEN LOWED I 0.0. Itiarre 0?-1 COCKPIT BULKHEADS  Xt Oftibiet•w• 044 1101 wow. on 0 -to 8011310nfla LOOM — oar 0/n/i0 Inc wins.... en VitVIS age 1 thaw. anonMillen rit, nos inealtinIND I Vinci "1/0 n '3O/0 EFTA_R1_00013036 EFTA01734649  2 AO 1.116 MA% INIIIdll103 Nl GAY 110% I -CO — 1024111-- I 'nun awvinMIMIC .16%15 I WSC MeallSECID a Y 1 - mtp A 60'6ZISI min/twine° . EFTA_R1_00013037 EFTA01734650  .ao6ca cao lo.nr -E0 )IO narsamen - 7 6, - 0•60 cmru •s =winIMMO O0'1 -OEM- ;nom , umarifignO Go gi 1 to GIG 1 OTF '51 ,XVflitOliV,, EFTA_R1_00013038 EFTA01734651 EFTA01734652 6£0£L000-Ld-Vid3 1,10T DAIL:M/015/0/ 14:41.06 ), 6 tl (0. NAY" CRISTEN LIMITED roiLoot& Gulfstavam r.n D. POI . P.M VAIII• 1/1. FWD. RH EQUIPMENT RACK pi P —or  I.SIPONIC0014 400 139010 Pn WM VI 4 • O so — - I, 41 I 4/40 Rum' an rit w LICAvi O3inn 11319480 !ID S CJ O ttu Hit 11) a Pj •44 GB r l ' C10 R 0 U le! K me 1 C _ N® 0 EFTA_R1_00013040 EFTA01734653 EFTA01734654 140€ 000-I.dVidg P. Or DAr v ,:i/U/ 13:16,:» A -- t p M *t 00/10/0 CRISTEN LIMITED Gil team Pia 00 IBA. — FWD LH CLOSET n0 ng 0:,0)43.0.1 440 7 0  0 HH OM 031111111N31SIVO Il9 fi L 5 sg • lit 3 tt) - L-- - - :4R ,44 EFTA_R1_00013042 EFTA01734655 EFTA01734656 EVOCLOOO LdVid3 OM• fl y. SIAM COO, OAR: es/n/e CRISTEN LIMITED NI AMIN WALL VP TBD A FWD RH GALLEY Slit 2 OF a , a - t : ./L ovx. <,'d- if CRVI•0•00, 001 - many. Ik 0 c 90 urnvo HIS OHS — lilt WiMin iiVii Ithil i I f13AVI COLL= NUS= IVAIINLY voinotseu , 'T^ A ILMair EFTA_R1_00013044 EFTA01734657 ' Itt3ErrTiitiz"_1 -7 " -"gym= I, o EFTA_R1_00013045 EFTA01734658 EFTA01734659 940EL000 LdVJAB aL O O O 11 )- oo a 000 000 I 000 000 000 000 O0O da— QQQQ QOOOO A QQ QO a a [MP Par MR ./12/01 CRISTEN LIMITED • Iream "f FWD RH GALLEY a.. .2 107 ''" 'A*  a Jo 6•6.6j ir . ste66.,....6 66 :op ANTIVO CAN w. .ni 9- 90 a BA a/n/60 VIVI% 'AL 0 1000•1 Mum IMMO — 11.10.2.10 60- I CI O ix V 6 I II I I II POI 131 it U. I EFTA_R1_00013047 EFTA01734660  I 0 NOUNOINnW11103 N7 atm OW. • 1 1•t0 0/0/10 A IVIS All I Aro", (nit N318114 —— Urnaggplf) I irn i 1114 Pro PPP I; NS ral V i I V (o) t g ere.:oi to/9o/bn:31va EFTA_R1_00013048 EFTA01734661 EFTA01734662 640CL000 Ld-Vid3 CD 8 — 4 ft q _n I STANS CIO. MOM • 04/13/07 CRISTEN LIMITED GI) D INT. "Hi f • 10 FWD LH COMMUNICATION AREA at Kt witev132.  van tlagt. OMOSCCO NOILYJINIIIIIIIIOD Ifl 13MAI *VI :HOY -•- .0~ V - L0 (41/WPO Vt3. SOIVIS AM 0 Iron 0•40110/1 01000 VO Vat 1-4- eatti , 1!.. • _ _ _ . _ .