AYPO .TtPCnA tr ll/W'rED E A\.5 ON.\S- 7P2-t I tA-t A t/PO .trPCRA Fr l'/WlrED \ 7P2-t I I 3-t A YP O,7 tR CPA Ff ll/''"fED $---;1 I \, A r/R o 412 CnA Fr lt/l,frlED 6 // / ,//' // //*\:4, (/ ,,8,[ I A r/RO,IIRCRA Ff lllW'fED 7P2-tat2-t I AuPO /'tecP4Fr tht rrED 7F:- I C9 '5 \ AYPO AIRCRAFT II/W'TED I 7P2-1008-1 AYRO AIPCRAFT I'*|'rED 19l\2t z7 \ Ki\ I 14t2 9 7 P2-18f0=I AYPO AIPCRAFT llrlfrrED 3 rutx N -"''. -/ w 4 1 \1\# S\oor\, 7P2-r 803-l AYPO .tlPCRAFr ll/WlrED --'tfrta) g -....-V I A'/R O fl 'R CRA FT I I/'.'ITED 7P2-1210-l I \!; \ t\ ll l,tl/ I -,lt',,rs (t.10r,-,.1 'i'Y A r/P O .1 lR CPA Ff ll/rilfE0 t"ttt'' /t\ ------ -'-'--' =- -- > -1 ' I l0 I l (j I z:s 1'oo " -@ : ,OO ,\o \\:,.-* 0\ 9. A t/20 AlpcRAFr lrlwtrEo -\ .f- t4o @ fr rutY=a )'al DEIAIT'B' I A r/ft o .1 l2 CPA Fr lr/WrrED 4 fl 3 \ ffi a J , Ll , c I a 0, ,a r/P O r{ rn CRA Ff ll/W, fED ffi € &-=s ?"-'-8 @-----"-g EP.-....--- . 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F d t o r L oz U ? d o F I z U oz = l oUe F f I F_z ?-o =o AYPO AIRCRAFT IIfu'ITED 7 SPRiNG PRESSURE REGULATOR DIAPHRAGM AIR INLET PRESSURE REGULATOR VALVE NON-RETURN VALVE SOLENOID INLET VALVE TO ATMOSPHERE + OPERATION I. AIR ENTERS THE VALVE INLET AT A PRESSURE OF BETWEEN ]E AND 85 PSI AND FLOWS PAST THE PRESSURE REGULATOR VATVE AND THE NON.RETURN VALVE TO THE 1NLET VALVE AND THE UNDERSIDE OF THE PRESSURE REGULATOR DIAPhRAGM' THE RESULTING FORCE ON THE D1APHRAGM OPPOSES THE PRESSURE REGULATOR SPRING AND POSITIONS THE REGULATOR VALVE TO MAINTAIN A PRESSURE OF 18-22 PSI A-T THE INIET VALVE. 2. THE SOLENOID CONTROLS THE INLET VALVE AND THE PRESSURE RELIEF AND EXHAUST VAI-VE' WHEN THE SOLENOID IS ENERGIZED, THE INLET VALVE IS OPENED AND THE PRESSURE RELIEf AND EXHAUST VALVE IS CLOSED AND AIR PRESSURE IS DIRECTED TO THE SEATS. IN THE EVENT OF FAILURE OF THE PRESSURE REGUI,ATOR, PRESSURE IN EXCESS OF 22 ' 3C PSI TO THE SEALS LIFTS THE PRESSURE RETIEF AND EXHAUST VALVE TO VENT THE EXCESS PRESSURE TO ATMOSPHERE' WHEN THE SOLENOID IS DE.ENERGIZED THE ]NLET VALVE IS CLOSED AND THE PRESSURE RELIEF AND EXHAUST VALVE OPENED TO VENT THE PRESSURE FROM THE SEALS TO ATMOSPHERE. 3. THE NON.RETURN VALVE, MAINTAINS THE PRESSURE TO THE SEALS IN THE EVENT OF FAILURE OF IHE AIR PRESSURE SUPPLY, UNTIL THE SOLENOID IS DE.ENERGIZED' PRESSURE RELIEF AND EXHAUST VALVE 7M -3305- | ]_- - N---ll) - s-__.N) s-v_---s) A YPA 4IPCRA FT II/''ITED + OUTLET TO SUIT AND MASK INJECTOR INJECTOR BY.PASS RESIRICTOR OXYGEN INLET ',ixil' vFLEXI B LE BOOT a RESTRICTORS RELIEF VALVE DIAPH RAGM CAPSULE REGULATOR REGULATOR DIAPHRAGM SPRING DEMAND VALVE ACTUATING ARM CAPSULE CONIROLLED RESTRICTOR FLOW TESTER FLOW TEST {RELIEF VALVE .OW TEST BUTTON REFERENCE PRESSURE SUIT AND MASK SUPPLY PRESSURE REFERENCE FLOW TO ATMOSPH ERE 7t'i2-3603- I iAND VALVE SPRING AYRO A'RCRAFT II/W'TED MANUAL OVERIDE AND TEST BUTTON WEIGHT EXHAUST 3. WHEN THE G IOAD IS REMOVED, THE WEIGHT RISES UNDER THE ACTION OF THE INLET VALVE SPRING AND THE AIR PRESSURE ACTING ON THE UNDERSIDE OF THE EXHAUST VALVE SEAT. THIS ACTION CLOSES THE INLET VAIVE, WHICH SHUTS OFF THE AIR SUPPLY TO THE SUIT AND OPENS THE EXHAUST VALVE. THE ANTI-G SUIT IS VENTED TO ATMOSPHERE THROUGH THE OPEN EXHAUST VALVE. 4. THE RELIEF VALVE RELIEVES EXCESS PRESSURE WITHIN THE VALVE IN THE EVENT OF FAILURE OF THE PRESSURE REGULATOR, PRESSURE REGULATOR PRESSURE REGULATOR \/ALVE VALVE SEAT EXHAUST VALVE PRESSURE REGULATOR EXHAUST VALVE SEAT EXHAUST VALVE AIR INLET PORT ) AIR INLEI PORT INLET VALVE ) INLET VALVEl<, RELIEF VALVE I, AIR ENTERS THE AIR INLET PORT AT A PRESSURE OF I8- 85 PSIG AND FLOWS PAST THE PRESSURE REGULATOR VALVE. THE PRESSURE REGULATOR IS VENTED THROUGH THE SLACK THREAD OF THE PLUG AND MAINTAINS A PRESSURE OF 9-]I PSIG AT THE INLET VALVE. 2, WHEN A POSITIVE LOAD IN EXCESS OF 1.5.I.8G CAUSES THE WEIGHT TO DESCEND, THE EXHAUST VALVE CLOSES AND FORCES THE CENTRAL ROD DOWNWARDS, OPENING THE INLET VALVE. AIR FLOWS THROUGH THE INLET VALVE TO THE ANTI.G SUIT AND TO THE UNDERSIDE OF THE EXHAUST VALVE SEAT. THE G LOAD IMPOSED ON THE WEIGHT AND THE AIR PRESSURE ACTING ON THE UNDER- SIDE OF THE EXHAUST VALVE SEAT, POSITION THE INLET VALVE TO SUPPLY THE ANTI-G SUIT WiTH PRESSURE IN RATIO TO THE G LOADING. VALVE INLET VATVE SPRING I SUIT INFLATING SUIT EXHAUSTING A YPO/llPCPA Ff ll/hftfED WEATH ERSTRIPS SECTION THROUGH SEATS AT JOINT OF R.H. AND L.H. CANOPIES (cANOPrEs CLOSED AND SEATS TNFIATED) /r\/ /,%"-'\/ /17 ,,-,M WEATH ERSTRIP SEAL SUPPLY PIPETINE DETAIT (cANoPY oPEN AND SEAT DEFTATED) TYPICAL SECTION THROUGH sEAr (CANOPY OPEN AND SEAT DEFLATED) /2 SEAL SUPPLY PI PELIN E A r/PO,tlPCnA Ff ll/WrrED INBOARD PITOI'S CANOPY AITACHMENI INBOARD OBSERVER'S CANOPY ATTACHMENT P2-I00 9-1 I A t/P O Alz CRA Ff lr/tllrED 7P2-l 905-r I AYPO AI?CRAFT II/'"TED l5 I l3 A r/n O .{TPCRA Ff ll/WlfEO \---'- I A'/PO fl IPCRA FT IIfu'ITEO I 7 P2-191+-1 A YzO,TtnCAA Fr l'lW'rEO }},\ 20 I9 18 / c zc-/ 7n-t902-l A'/RO AIPCRA FT IIfuf'rED ,t fro # ./*\' -sTK--/*sry{r-r .rT.hs t \-.... --..-..-___-.-,. 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Unpublished Mk2 Arrow; Illustrations

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