MIL-DTL-85097/15A (OS)
2.2.2 Other Government documents, drawings, and publications. The following other Government
documents, drawings, and publications form a part of this document to the extent specified herein. Unless
otherwise specified, the issues of these documents are those cited in the solicitation or contract.
Naval Air Systems Command (CAGE Code 30003)
AS 3885
Propellant, N-47 (U)
673AS300
Rocket Motor, Mark 121 Mod 0
(Application for copies should be addressed to: Commander, Indian Head Division, Naval Surface
Warfare Center. Attn: Technical Information Products Branch (Code E143), Indian Head, MD 20640-
5035.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references
cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes
applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 General. The requirements in this specification sheet, unless in direct conflict with the basic
specification, shall be considered additional, not substitute. The Mark 121 Mod 0 Rocket Motor shall
conform to Drawing 673AS300.
3.2 Preproduction.
3.2.1 Propellant aging. When tested in accordance with MIL-DTL-85097, the propellant shall meet the
requirements of Table I.
TABLE I. Propellant N-47 (AS 3885).
7-Year Equivalent
Temp (°F)
Zero time
Property
0% Rel. Humidity
22% Rel. Humidity
Min
Max
Min
Max
Min
Max
⎯
⎯
⎯
Sm (maximum stress) psi
77
149
149
149
⎯
⎯
⎯
Em (elongation at Sm) %
77
21.3
10
18.5
Ym (Young's modulus) psi
77
960
1800
960
2862
960
2880
Br (strand burn rate at 1000
77
0.69
0.84
0.69
0.89
0.69
0.89
psi) in/sec
3.3 Preproduction/production.
3.3.1 Propellant. The propellant shall conform to the requirements of AS 3885 when tested in accordance
with MIL-DTL-85097.
3.3.2 Ballistic performance. The ballistic performance shall conform to Table II.
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