1、MIL-P-bO852A 13 W 99999Ob 03LiLbOL Li I “ :$: r * c. MIL-?-60852A( MU) 21 October 1970 SiTpERSDING MIL-P -60852 (Mu) 24 October 1969 . MILITARY SPECIFICATIN - PROPELLANT, GRAIN, INHIBITED 1.1 This specification covers Propellant, Grain, Inhibited f. . 350 550 psi/sec 12. 4600 4600 400 550 psi/sec 12
2、 4600 . ,400 550 psi/sec 12 4600 300 . 550 psi/sec - 12. 12 4600 350 . 550 ps/ A sec 12 4600 350 550 psi/sec TABLE II Axial Thrust Action Time Rocket Ignition Del ay (Maximum) Milliseconds, Max Milliseconds, Max 25 7000 550 7000 450 25 160 to 165OF 7000 XM38 450 - 25 3 Licensed by Information Handli
3、ng Services.- . 8.4 Workmanship.- Workmanship shall be in accordance with the requirernents 3.4.1 Grain defects.- The inhibited.grain assembly shall be freefrom of uie applicable drawings and referenced specifications. i- fissures, voids, cracks, cuts, dents, scratches and grooves. 3.4.2 Foreisn mat
4、ter.- The propellant grain shall be free from di . . .- 4.3,3.1.1 Ballistics.- The twelve propellant grains, inhibited, of the initial production sample (or a subsequent sample of 12 propellant grains, inhibited, whenever a change has been made in the process or the-material or the inhibitor used in
5、 regular production) and 6 . propellant grains inhibited from- each subsequent production lot shall and then tested in accordance with 4.4.1.1. Failure of any propellant grain, inhibited to comply with the requirements of 3.3 shall be cause for rejection of the lot. . be temperature conditioned as s
6、pecified in Table III and-4,4.1,1.1 TABLE. III . Temp er atu r e 6500to 75 o 160 to 165 O -65 to -70 Saqle Size Initial Production Sample Production Lot 4 4 4 2 2 2 7: Licensed by Information Handling ServicesMIL-P-60852A( MU) 4.3.4 Inspection Equipment. The examination and tests shall be made. usin
7、g equipment listed on the appropriate Ia. 4.4 Test methods and procedures. -, 4.4.1 Functional tests. 4.4.1.1 Ballistics.- The sample shall be installed.in an appropriate catapult or approved simulated equal. The head of the caiiapult shall be lugs of the launcher and allowed to move freely. The sam
8、ple shall.be ”. - h. . . _. _ statically supported and the test weight shall be attached to the mounting ballistically tested within 10 minutes after remova: from the cond3tioning . chamber. When this time is exceeded, the sample unit shall be reconditioned . in accordance with 4.4.1.1.1. 4.4.1.1.1
9、Temperature conditioning.- A standard M8, M9, NO, XM12, M19, XM25, XM37 or XM38 catapult loaded with a dummy grain and containing :. - a temperature sensitive element shall be placed in the conditioning chamber - . at the same-time as the sample. The conditioning time shall be a minimum of one hour
10、longer than the time necessary to bring the element contained in the dummy grain to the required temperature. 5. PREPARATION FOR DELIVERY with Drawings C8858559 and C8858560. 6. NOTES *. - 5.1 Packinq and Marking. - Packing and marking- shall be .in accordance 6.1 Orderinq data. - Procurement docume
11、nts should specify the title, I. number and date of this specification, and the applicable propellant i: .- grain drawing number. (See 3.1) the pressure reaches 500 psi at the start or” burning and the point where the pressure falls below 1000 psi at the end of burning on the pressure time record. 6
12、.3 Pressure time integral is defined as the area under the pressure time record bounded by the acition time limit. ,. 6.2 Action time.is defined as the time between the points where - I a- Licensed by Information Handling Services. NIL-P-60852A 13 = 7779706 0341607 7 = MIL-P-60852A (MU) 6.4 Rocket i
13、gnition delay is defined as the time between the sudden drop on the acceleration time record of the booster-section and the -4 point at which the pressure time record of the rocket section reaches 500 psi. ments specification MIL-P-60852(MU) dated 24 October 1969. 6.5 Supercession data.- This specification includes the require- I l Custodian . Army - Mu - . . . . . I. Prep ar i ng Activity Army - Mu Project NO. 1376-AO83 . - 9 Licensed by Information Handling Services
