EFTA01195241.pdf

From: "jeffrey E." <[email protected]> To: Larry Visoski Subject: Re: Date: Sun, 16 Aug 2015 03:25:55 4.0000 Wine-Images: image2.jpeg; image3.jpeg; image l.jpeg so lets push kathy for an early engine, and put on loaners at Dallas. On Sal, Aug 15, 2015 at 9:54 PM, Larry Visoski <la wrote: Jeffrey Great email description of coffin corner,. weight and altitude vs performance.. Below Are comments from Cyrus supervisor al PB1Gulfstream: -Both left and right (cockpit and cabin) packs can feed the cabin silencer through some interconnect valves. -Air data computer will only have effect on auto-throttles, aileron trim and elevator trim (if autopilot is engaged). Enough autopilot input from drastic course change may lift a little flight spoiler but the plane would be banking rather aggressively from that input. So no direct spoiler control. -If you turn the right pack or right bleed air off in flight there is a cross-over duct and check valve that will open and allow the left airlpack to supply air to both cockpit and cabin. The ADC does allow the turbine bypass valve on both ACM's to open but that's al 42k feet -The left and right pack inlet valves go into high flow mode from 25 pounds per min to 26.5 PPM at 13k feet -They jump again to 28 PPM to the packs at 23k feet -So the ACM turbine bypass valves and the pack inlet valves arc both altitude controlled but only the turbine bypass valve gets it altitude position from the ADC. The other has a built in aniroid on the side of the valve and senses the atmospheric pressure in the boiler room in flight. EFTA01195241  EFTA01195242 AIRCRAFT GENERAL MA 111 .• • •,A rum WITCH StsrtwAsi itCos /barn SCRs* SYS!, lo ANTI CY Win TVA STATIC PRESSURE lt 10 CM R VPASS 000°S C OK Vat •rP VALV CaINN DUCT ANTICIPATOR TC A ER7 CABIN "(IMAM OW °TEMP SENSOR TEuPERATLFE CONTROL VALVE LES1340 Rum SUPPLY AA MCCAW CABIN FR(BALEF SERVO MANUAL TEMPERATLIRE CONTROL SYSTEM aPAUA CONTROL VALVE* FEAR PREcculic IFIDERATuRE CONTROL VALVE TORQUE MOTOR WWI INSTALLF0 BY SIC 4268N1A-0 BULKHEAD Figure 21.10. Refrigeration Systems  EFTA01195243 N “Ahlau TEmPICR3AZ: <a.m.:, „ aE. TEA4VRA CconnOt r " t°" 0 .1EI.Oron CORPT1 •••A DuCT ANTC.Aton °Con fitAvo pal Writ EL *nu Eva _,900lon \ 07 funitilP ;C Strom cOCAPIL WC? 0 ..1:7.741StZsa, D D 2 SwArallotoymve PO'd011tUMPIATomt t slot 0•11 4.41),:4• C CANN nue) HE TO. SENSOR O Snes pat ANOSUB 1.10413.01.51 rn co C a corat1040 NN Stitil t mum niM new* • W M tLEE% liEJANO CABIN Canna SvEntli SECON3Airi .4.10 Iva MANUAL TEMPERATURE 10PEPATURECONMX • Rol two NA COMPD. PAVE' REAR PRESSUPE VALVE TCPOLIE u0, 014 P BIAXEAD INST./AEU BY SEC 420110k0 Figure 21-10. Refrigeration Systems -Larry, Honestly I doubt the bleed is your problem but only way to tell that I can think of is to turn them off one at a time in flight. And see if the problem changes,. Best is to turn both off at altitude but that is not a flight I'm going on! Cyrus Sent from my iPhone On Aug 15, 2015, at 9:30 PM, jeffrey E. <jeLyarallogitismailsam> wrote: Up to about 28,000 feet the aircraft is limited by indicated air speed (Vne), so say you can do 350 kiss at ground level, you can do that all the way up to 28,000 too. Above that the limit is by Mach number (Mmo), as you continue to climb your indicated air speed and your ground speed now decline as your Mach number remains constant. However, even though you are slowing down you engines arc burning less and less fuel, part of this is from the decreased IAS. but part is from the cold air. Colder air gives greater charge weight, it can be compressed more and the engines get greater thermodynamic efficiency. Eventually you reach the lowest clean IAS for your current weight. and that's as high as you am going. It doesn't make any difference how much power you EFTA01195244  could add, you still can't climb because to do so you would need to slow down or break up, and to slow down you'd have to start deploying high lift devices which increase drag and reduce efficiency. This is what's called the coffin corner, your engines are probably running near max power. you arc near or at max speed and you arc just above the stall. please note The information contained in this communication is confidential. may be attorney-client privileged. may constitute inside information, and is intended only for the use of the addressee. It is the property of JEE Unauthorized use, disclosure or copying of this communication or any pan thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by return e-mail or by e-mail to jeevacationgqmail.com. and destroy this communication and all copies thereof, including all attachments. copyright -all rights reserved please note The information contained in this communication is confidential. may be attorney-client privileged, may constitute inside information, and is intended only for the use of the addressee. It is the property of JEE Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by return c-mail or by e-mail to jcamaralion@gmaiLram, and destroy this communication and all copies thereof. including all attachments. copyright -all rights reserved EFTA01195245