Army Regulation AR 70-38: RDT&E of Materiel for Extreme Climatic Conditions Manual PDF (EN)

Downloaded from https://www.everyspec.com Army Regulation 70–38 RESEARCH, DEVELOPMENT, AND ACQUISITION RESEARCH, DEVELOPMENT, TEST AND EVALUATION OF MATERIEL FOR EXTREME CLIMATIC CONDITIONS Headquarters Department of the Army Washington, DC 15 September 1979 UNCLASSIFIED

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Downloaded from https://www.everyspec.com SUMMARY of CHANGE AR 70–38 RESEARCH, DEVELOPMENT, TEST AND EVALUATION OF MATERIEL FOR EXTREME CLIMATIC CONDITIONS This Change 1-- o Is issued to correct printing errors of the basic. o Replaces old pages 2-19 and 2-20. This corresponds to electronic paras 2-8f through 2-11b. o This revision-- o Is a complete revision of AR 70-38. o Reflects changes in policy, guidance, and climatic criteria, and conforms to MIL-STD-210B, Climatic Extremes for Military Equipment, 15 December 1973.

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Downloaded from https://www.everyspec.com Headquarters Department of the Army Washington, DC 15 September 1979 *Army Regulation 70–38 Effective 15 September 1979 RESEARCH, DEVELOPMENT, AND ACQUISITION RESEARCH, DEVELOPMENT, TEST AND EVALUATION OF MATERIEL FOR EXTREME CLIMATIC CONDITIONS w a s a u t h e n t i c a t e d b y E . C . M e y e r , G e n e r a l , U n i t e d S t a t e s A r m y C h i e f o f S t a f f , a n d J . C . P e n n i n g t o n , M a j o r G e n e r a l , U n i t e d S t a t e s A r m y , T h e Adjutant General. The proponent agency of this regulation is the Office of the Chief of Engineers. Army management control process. Not applicable. S u p p l e m e n t a t i o n .

L o c a l s u p p l e m e n t a - tion of this regulation is prohibited, except upon approval of the Chief of Engineers. I n t e r i m c h a n g e s . I n t e r i m c h a n g e s t o this regulation are not official unless they are authenticated by The Adjutant Gener- al. Users will destroy interim changes on their expiration dates unless superseded or rescinded. Suggested Improvements. Users are invited to send comments and suggested improvements on DA Form 2028 (Recom- m e n d e d C h a n g e s t o P u b l i c a t i o n s a n d Blank Forms) direct to HQDA (DAEN- RD) WASH DC 20314. D i s t r i b u t i o n .

T o b e d i s t r i b u t e d i n a c - cordance with DA Form 12-9A require- m e n t s f o r A R , R e s e a r c h a n d Development. S u m m a r y . T h i s r e g u l a t i o n p r e s c r i b e s p o l i c i e s , r e s p o n s i b i l i t i e s , a n d p l a n n i n g guidance for realistic consideration of cli- matic conditions in the research, develop- m e n t , t e s t , a n d e v a l u a t i o n ( R D T E ) o f material used in combat by the Army. Applicability. This regulation applies to items of materiel developed by the Army.

I t a l s o a p p l i e s t o i t e m s o f m a t e r i e l developed by another Service to meet Ar- my’s requirements and Army (a) approves t h e r e q u i r e m e n t s d o c u m e n t s , ( b ) h a s budget responsibility and (c) is the user. H i s t o r y . T h i s p u b l i c a t i o n w a s o r i g i n a l l y p r i n t e d o n 1 A u g u s t 1 9 7 9 . I t w a s a u t h e n t i c a t e d b y E . C . M e y e r , G e n e r a l , United States Army Chief of Staff, and J. C . P e n n i n g t o n , M a j o r G e n e r a l , U n i t e d States Army, The Adjutant General.

This e l e c t r o n i c e d i t i o n p u b l i s h e s t h e b a s i c 1 A u g u s t 1 9 7 9 e d i t i o n a n d i n c o r p o r a t e s Change 1. Change 1 to this regulation was printed on 15 September 1979. Change 1 Proponent and exception authority. Active Army: C ARNG: NONE USAR: NONE Contents (Listed by paragraph and page number) Chapter 1 GENERAL POLICIES AND PROCEDURES, page 1 Purpose. • 1–1, page 1 Applicability. • 1–2, page 1 Explanation of terms. • 1–3, page 1 Objective. • 1–4, page 3 Design and test policy. • 1–5, page 3 Major responsibilities. • 1–6, page 4 Limitations. • 1–7, page 5 Application of design values. • 1–8, page 5 Climatic testing.

• 1–9, page 5 Chapter 2 CLIMATIC CRITERIA, page 6 *This regulation supersedes AR 70-38, 5 May 1969. AR 70–38 • 15 September 1979 i UNCLASSIFIED

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Downloaded from https://www.everyspec.com Contents—Continued Section I GENERAL, page 6 Climatic design types. • 2–1, page 6 Summary of daily cycles. • 2–2, page 7 High elevation and upper air conditions. • 2–3, page 8 Section II CLIMATIC DESIGN TYPES, page 8 Hot climatic design type. • 2–4, page 8 Basic climatic design type. • 2–5, page 11 Cold climatic design type. • 2–6, page 16 Severe cold climatic design type. • 2–7, page 17 Additional environmental elements. • 2–8, page 18 Combined environmental effects. • 2–9, page 21 Section III DISTRIBUTION OF CLIMATIC DESIGN TYPES, page 21 Map of climatic design types. • 2–10, page 21 Delimitation of climatic design types.

• 2–11, page 21 Appendix A. RELATIONSHIP BETWEEN AR 70-38 AND MIL-STD-210B*, page 25 Table List Table 1–1: Materials and High Humidity Deterioration, page 11 Figure List Figure 2–1: Areas of Occurrence of Climatic Design Types, page 2 Figure TABLE 2–1: Summary of Temperature, Solar Radiation, and Relative Humidity Daily Cycles., page 7 Figure 2–1B: Elevation, Pressure and Temperature, page 8 Figure TABLE 2–2: Hot Climatic Design Type: Hot-Dry Daily Cycle of Temperature, Solar Radiation, and Humidity. (QSTAG 360 Category A1), page 9 Figure TABLE 2–3: Hot Climatic Design Type; Hot-Humid Daily Cycle of Temperature, Solar Radiation, and Humidity.

(QSTAG 360 Category B3), page 10 Figure TABLE 2–4: Hot Climatic Design Type; Constant High Humidity Daily Cycle of Temperature, Solar Radiation, and Humidity, (QSTAG 360 Category B1), page 12 Figure TABLE 2–5: Basic Climatic Design Type; Variable High Humidity Daily Cycle of Temperature, Solar Radiation, and Humidity. (QSTAG 360 Category B2), page 13 Figure TABLE 2–6: Basic Climatic Design Type: Hot Daily Cycle of Temperature, Humidity, and Solar Radiation. (QSTAG 360 Category A2), page 14 Figure TABLE 2–7: Basic Climatic Design Type; Cold Daily Cycle of Temperature, Humidity, and Solar Radiation. (QSTAG 360 Category C1), page 16 Figure TABLE 2–8:

Cold Climatic Design Type; Daily Cycle of Temperature, Humidity, and Solar Radiation. (QSTAG 360 Category C2), page 17 Figure 2–8: Drop Diameter Range (mm), page 18 Figure 2–9: Snow Height and Mass Flux, page 19 Figure 2–10: Blown Snow Crystal Diameter Formula, page 19 Figure 2–11: Height—Windspeed Calculations, page 20 Figure 2–2: Distribution of Absolute Maximum Temperatures, page 23 Figure 2–3: Distribution of Absolute Minimum Temperatures, page 24 ii AR 70–38 • 15 September 1979

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