1、PIS3377 REV A 26 7997732 0008276 3 k-29- &/ .- FED. SUP CLASS . _. 2620 THE TIRE SHALL BE -IN ACCORDANCE WITH THE APPLICABLE REQUIREMFNTS OF MIL-R-7726 EXCEPT AS SPECIFIED HEREIN z STATIC MPL. BURST BEAD . STATIC MOLD SIZE kY . UUD PRESS. PRESS. WIDTH WEIGHT UNBAL. TREAD SKID DEFLEC. BATING BATING P
2、SI PSI IN. LBS. oz. IN. DEPTH + 3% LBS. RATED HIN. HAX. MAX. HAX. HIN. - 4% isx5.7 1114 n ,6200 215 860 1.5 16.3 2.5 - 2/RIB .17 32% - 1/ TUBELESS - 21 THREE (3) CONTINUOUS CIRCUMFERENTIAL GRM)VES, ONE GROOVE Ri CENTER OF TREAD. TREAD SHALL BE FABRIC REINFORCED FOR HAXIMM RELIABILITY AND RETmTIN OF
3、TRPAD. pn DATA: VIMQ HIN. UIN . FLANGE Dm LKCE PUNGE LEDGE FLANGE FLANGE HEEL EDGE PLANCES DIAHEPW BEICHT WIDTH WIDTH RADIUS RADIUS RADIUS (ma) (ma) (INCH) (INCH) (INCH) (INCH) (INCH) (INCH) 4.25 8.00 .e75 1.5 .750 .438 .219 .O78 THIS TIIIE SHALL BE SIIITABLE FOR USE AND PROVIDE REASONABLE SERVICE L
4、IFE DURING ALL NOW OPERATIONS AT TAKE-OFF SPEEDS OF WT HORE I“ 247 Wti AND LANDING SPEEDS OF NOT MORE THAN 190 MPH ON ALL TYPES OF RUNWAYS AND ON AIRCRAFT CARRIERS. lE TES SALL WIlSTAND WITHOUT FAILURE THE FOLLOWING TESTS: TIRE 1: DYHAWIC TEST (3 TIRES) - WITH THE TIRE -TED TO GIVE A RATED DEFLECTIO
5、N AT RATED LOAD EACH OF THE THREE CONSECUTIVE TIRES OF THE SAME PRODUCTION CONFIGURATIC3 SHALL WITHSTAND Ri THE SEQUENCE ENIUHERATED, WITHOUT EVIDENCE OF FAILURE 21 CYCLES OF TEST A, 2 CrCLES OF TEST B. 2 CYCLES OF TEST C, 25 CYCLES OF TEST D, AND 15 CYCLES OF TEST E. TIRE mLOPE VERIFICATION - THE C
6、ONTOUR OF THE TIRE IS OPTIONAL. ADEQUATE MEASUREMENTS SHALL BE TAKEN TU VERIFY TIRE SECTION DIMENSIONS FOR EACH OF THE THREE DYNAMIC TEST TIRES BEFORE, DURING CYCLES 1. 10, 15. 21 (HAXIMUM THROWN AND GROWN), AND AFTER TEST A. - TAXI-TAKE-OFF - A- m TAXI THE TIRE ON THE FLYWHEEL FOR 9,000 FEET AT 40
7、MPH AND 6.200 POUNDS LOAD. PLYUHEEL UNDER FULL LOAD AND WITHIN TWO MINUTES ACCELERATE AT AN AVERAGE RATE OF 12.0 FEET/ SEC/SEC TO 230 MPH. 5,000 POUNDS AT THE END QF THE TAKE-OFF ROLL. STOP THE THE LOAD SHALL BE DECREASED LINEARLY WITH TIME FROM 6,200 POUNDS TO w.B - TAXI OVERLOAD TAKE-OFF - TAXI TH
8、E TIRE ON THE FLYWHEEL FOR 9,000 FEET AT 40 MPH AND 6,200 POUNDS LOAD, STUP THE FLYWHEEL, INCREASE THE LOAD TO 9.350 POUNDS, AND WITHIN TWO MINUTES ACCELERATE AT AN AVERAGE RATE OF 11.97 FEET/SEC/SEC TO 236 KPH. BE DECREASED LINEARLY WITH TIHE TO 7,200 POUNDS AT THE END OF THE TAKE-OFF ROLL. THE LOA
9、D SHALL “l.Cc- TAXI-TAKE-OFF AT ALTITUDE W HO= - THE TIRE SHALL BE TAXIED OX A FLYWHEEL FOR 7,000 FEET AT 40 KPH AND 6,200 POUNDS LOAD. THE LOAD SHALL BE DECREASED LINEARLY WITH TIME FROM 6,200 POUNDS TU . STOP THE FLYWHEEL UNDER FULL LOAD AND WITHIN IWO MINUTES ACCELERATE AT AN AVERAGE OF 9.0 FEET/
10、SEC/SEC TO 247 MPH. 5,000 POUNDS AT THE END OF THE TAKE-OFF ROLL. I msT D- UNDING TAXI - lE TIRE SEALL BE LANDED AGAINST THE FLYWHEEL ROTATING AT A PERIPHERAL SPEED OF 100 MPH. THE AVERAGE DECELERATION RATE SHALL BE 8.5 FEETISECISEC FROH 190 MPH TO ZERO SPEED. SHALL BE LANDED AGAINST THE FLYWHEEL WI
11、TH A 10,000 POUNDS LOAD, DECREASED WITHIN TWO SECONDS THE TIRE To 4,OO POUNDS, AND THEN INCREASED LINEARLY T 5,500 POUNDS LAD AT THE END OF THE LANDING ROLL. LOAD UNTIL AN ADDITIONAL 9,000 FEET HAS BEEN COVERED. THE TIRE SHALL IHMEDIATELY CONTINUE ROLLING FROM THAT POINT AT 40 MPH AND 4,000 POUNDS T
12、BST E- TAXI Tb SIMUTE SIDE LOAD DURING TURNING - ONE CYCLE OF TEST “E“ SHALL CONSIST OF ONE CYCLE OF “E“1 AND . ONE CYCLE OF “E“2. a t: a P I MILITARY STANDARD A WAVY-A8 TITLE hcrc TIRE. PNEUMTIC. AIRCRAFT, REBUILT I MS 3379 (AS) 185.7 (247 HPH) TYPE VI1 (NAV) I Provided by IHSNot for ResaleNo repro
13、duction or networking permitted without license from IHS-,-,-US3377 REV A 26 = 7777732 0008277 3 - ROCUREYENT SPEClFii3TION MIL-R-7726 I I 2620 MS 3379 185.7 (247 HPH) TYPE VI1 (NAVY) WERSEDES: SHEET OF Ei - TAXI-SIDE LOAD ACTING INBOARD 1. LAND ME TIRE ON THE FLYWHEEL ROTATING AT A PERIPHERAL SPEED
14、 OF 35 MPH WITH A PRESELECTED %DEGREE YAW ANCLE. 2. INCRPASE ME LOADING UNTIL THE TIRE IS LOADED WITH A RADIAL LOAD (IN THE WHEEL PLANE) OF 4,600 POUNDS. 3. UNWm THE TIRE WM A DISTANCE OF 300 FEET HAS BEEN COMPLETED WITH FULL LOAD. Ez - TAXI-SIDE LOAD ACTING OUTBOARD SAHB AS “E1“, EXCEPT THE 9-DEGRE
15、E YAW ANGLE SHALL BE APPLIED IN THE OPPOSITE DIRECTION. TIRE 2: COVT LAB TEST - THIS TIRE SHALL BE RETREADED FROM THE SAME BATCH AS TEST TIRE 1 AND SHALL BE IDENTICALLY PROCESSED. THIS TIRE SHALL NOT BE CONTRACTOR TESTED AND SHALL BE PROVIDED FOR GOVERNMENT LABORATORY TESTING. SECTION - A REPRESENTA
16、TIVE SECTION OF TIRE 1 AND TIRE 2 SHALL BE SUBMITTED TO A GOVERNMENTLABORATORY AS SPECIFIED IN MS 3377(AS). AIR RETMTION - THE TUBELESS TIRE SHALL BE INFLATED TO A PRESSURE OP 350 PSI AND ALLOWED TO STAND FOR A PERIOD OF 4 HOURS AT WHICH TIHE THE PRESSURE DROP DUE TO GROWTH SHALL BE REPLACED. THE TI
17、RE SHALL THEN STAND FOR AN ADDITIONAL 12 HOURS AT WHICH TIME THE PRESSURE SHALL BE MEASURED AND THE TIRE INSPECTED. THE AIR PRESSURE LOSS SHALL NOT EXCEED 5 PERCENT AND THE TIRE SHALL NOT REVEAL ANY APPEARANCE OR PERFORMANCE DEFECTS, SUCH AS SIDEWALL BLISTERS, TREAD SEPARATION, ETC. NOTES - 1. REFER
18、ENCED DOCUMENTS SHALL BE OF THE ISSUE IN EFFECT ON DATE OF INVITATIONS FOR BIDS, OR REQUEST FOR PROPOSAL EXCEPT THAT REFERENCE ADOPTED INDUSTRY STANDARDS SHALL GIVE THE DATE OF THE ISSUE ADOPTED. 2. FOR DESIGN FFATURE PURPOSES, THIS STANDARD TAKES PRECEDFNCE OVER PROCUREMFNT DOCUMENTS REFERENCED HEREIN. TITLE _-1_. TIRE, PNEUMATIC, AIRCRAFT, REBUILT, I J. NAVY-AS *hr GUI /- y. o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
