c*) pab83^> AGARD-CP-392 Q- U 6 < < NORTH ATLANTIC TREATY ORGANIZATION DISTRIBUTION AND AVAILABILITY ON BACK COVER AGARD-CP-392 NORTH ATLANTIC TREATY ORGANIZATION ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT (ORGANISATION DU TRAITE DE L'ATLANTIQUE NORD) AGARD Conference Proceedings No.392 INTERIOR BALLISTICS OF GUNS Papers presented at the Propulsion and Energetics Panel 66th (B) Specialists* Meeting, held in Florence, Italy, 9—11 September 1985. THE MISSION OF AGARD The mission of AGARD is to bring together the leading personalities of the NATO nations in the fields of science and technology relating to aerospace for the following purposes: - Exchanging of scientific and technical information; - Continuously stimulating advances in the aerospace sciences relevant to strengthening the common defence posture; - Improving the co-operation among member nations in aerospace research and development; - Providing scientific and technical advice and assistance to the North Atlantic Military Committee in the field of aerospace research and development; - Rendering scientific and technical assistance, as requested, to other NATO bodies and to member nations in connection with research and development problems in the aerospace field; - Providing assistance to member nations for the purpose of increasing their scientific and technical potential; - Recommending effective ways for the member nations to use their research and development capabilities for the common benefit of the NATO community. The highest authority within AGARD is the National Delegates Board consisting of officially appointed senior representatives from each member nation. The mission of AGARD is carried out through the Panels wh.ch are composed of experts appointed by the National Delegates, the Consultant and Exchange Programme and the Aerospace Applications Studies Programme. The results of AGARD work are reported to the member nations and the NATO Authorities through the AGARD series of publications of which this is one. Participation in AGARD activities is by invitation only and is normally limited to citizens of the NATO nations. The content of this publication has been reproduced directly from material supplied by AGARD or the authors. Published January 1986 Copyright © AGARD 1986 All Rights Reserved ISBN 92-835-0388-0 Primed by Specialised Printing Services Limited 40 Chigwell Lane, Loughton, Essex IG10 3TZ RECENT PUBLICATIONS OF THE PROPULSION AND ENERGETICS PANEL Conference Proceedings Testing and Measurement Techniques in Heat Transfer and Combustion AGARD Conference Proceedings No.281, 55th A Meeting, May 1980 Centrifugal Compressors, Flow Phenomena and Performance AGARD Conference Proceedings No.282, 56th B Meeting, May 1980 Turbine Engine Testing AGARD Conference Proceedings No.293, 56th Meeting, Sep/October 1980 Helicopter Propulsion Systems AGARD Conference Proceedings No.302, 57th Meeting, May 1981 Ramjets and Ramrockets for Military Applications AGARD Conference Proceedings No.307, 58th Meeting, October 1981 Problems in Bearings and Lubrication AGARD Conference Proceedings No.323, 59th Meeting, May/June 1982 Engine Handling AGARD Conference Proceedings No.324,60th Meeting, October 1982 Viscous Effects in Turbomachines AGARD Conference Proceedings No.351,61 st A Meeting, June 1983 Auxiliary Power Systems AGARD Conference Proceedings 352,61st B Meeting, May 1983 Combustion Problems in Turbine Engines AGARD Conference Proceedings 353,62nd Meeting, October 1983 Hazard Studies for Solid Propellant Rocket Motors AGARD Conference Proceedings 367, 63rd A Meeting, May/June 1984 Engine Cyclic Durability by Analysis and Testing AGARD Conference Proceedings No.368,63rd B Meeting, May/June 1984 Gears and Power Transmission Systems for Helicopters and Turboprops AGARD Conference Proceedings No.369, 64th Meeting October 1984 Heat Transfer and Cooling in Gas Turbines AGARD Conference Proceedings No.390,65th Meeting, May 1985 Smokeless Propellants AGARD Conference Proceedings No.391,66th A Meeting, September 1985 Working Group Reports Aircraft Fire Safety AGARD Advisory Report 132. Vol. 1 and Vol.2. Results of WG11 (September and November 1979) Turbulent Transport Phenomena (in English and French) AGARD Advisory Report 150. Results of WG 09 (February 1980) Through Flow Calculations in Axial Turbomachines AGARD Advisory Report 175. Results of WG 12 (October 1981) Alternative Jet Engine Fuels AGARD Advisory Report 181. Vol. 1 and Vol.2. Results of WG 13 (July 1982) Suitable Averaging Techniques in Non-Uniform Internal Flows AGARD Advisory Report 182 (in English and French). Results of WG 14 (June/August 1983) in Lecture Series Non-Destructive Inspection Methods for Propulsion Systems and Components AGARD LS 103 (April 1979) The Application of Design to Cost and Life Cycle Cost to Aircraft Engines AGARD LS 107 (May 1980) Microcomputer Applications in Power and Propulsion Systems AGARD LS 113 (April 1981) Aircraft Fire Safety AGARD LS 123 (June 1982) Operation and Performance Measurement of Engines in Sea Level Test Facilities AGARD LS 132 (April 1984) Ramjet and Ramrocket Propulsion Systems for Missiles AGARD LS 136 (September 1984) 3-D Computation Techniques Applied to Internal Flows in Propulsion Systems AGARD LS 140 (June 1985) Other Publications Airbreathing Engine Test Facility Register AGARD AG 269 (July 1981) THEME This meeting provided scientists, development engineers and application specialists with a broad overview of advancing technology and experimental techniques in interior ballistics of liquid and solid propellant guns. A comparison of these technologies with interior ballistics of rockets was also drawn. The meeting was originally be divided into ten sessions, Overview; Liquid Propellant Guns; Characteristics of Solid Gun Propellants; Gun Barrel Erosion; Low Vulnerability Propellant for Guns; Experimental and Test Techniques in Interior Ballistics; Gun Ignition Systems; New Problems in Guns; Traveling Charge Gun Theory; and Comparison of Interior Ballistics of Guns and Rockets. The last session was cancelled. La reunion proposee a permis aux scientifiques se consacrant a la recherche, aux ingenieurs charges de developpements et aux specialistes des applications d'avoir une vue generate des progres de la technologie et des techniques experimentales dans le domaine de la balistique interne des canons a propergol liquide et solide. En outre, des comparaisons ont ete etablies entre ces technologies et la balistique interne de fusees. La reunion etait a l'origine divisee en 10 seances: Aspect General; Canons a Propergol Liquide; Caracteristiques des Propergols Solides pour Canons; Erosion Interne des Canons; Propergols pour Canons, a Faible Niveau de Vulnerability; Techniques d'Experiences et d'Essais en Balistique Interne; Systemes de Mise a Feu de Canons; Problemes Lies aux Canons; Theories du Deplacement de la Charge a l'lnterieur du Tube; Comparaison entre la Balistique Interne des Canons et celles des Roquettes. Cette derniere seance a ete annulee. PROPULSION AND ENERGETICS PANEL Chairman: Prof. H.Wittenberg Deputy Chairman: Dr W.L.Macmillan Delft University of Technology National Defence Headquarters Dept. of Aerospace Engineering CRAD/DRDA 6 Kluyverweg 1 101 Colonel By Drive 2629 HS Delft, Netherlands Ottawa. Ontario K1A 0K2, Canada PROGRAMME COMMITTEE Prof. C.Casci (Chairman) Mr L.N.Gilbert Direttore del Dipartimento di Energetica Head, Technology Programs Management Off. Politecnico di Milano Code 3205, Naval Weapons Center Piazza Leonardo da Vinci 32 China Lake, California 93555, US 20133 Milano, Italy Prof. R.Jacques Dipl.-Ing. B.Crispin Ecole Royale Militaire Messerschmitt-Bolkow-BIohm GmbH, Abt AE 15 30, Avenue de la Renaissance Postfach 801149, 8000 Miinchen, Germany 1040 Bruxelles, Belgium Mr A.Cruttenden Royal Ordnance Factories Mr B.Zeller Explosives Division HQ Societe Nationale des Poudres et Explosifs Westcott, Aylesbury. Bucks HP 18 ONZ, UK 91710 Vert-le-Petit, France HOST NATIONAL COORDINATOR Lt Col. A.Castrucci PANEL EXECUTIVE Dr E.Riester AGARD-NATO 7 rue Ancelle 92200 Neuillysur Seine France ACKNOWLEDGEMENT The Propulsion and Energetics Panel wishes to express its thanks to the Italian National Delegates for the invitation to hold this meeting in Florence, Italy, and for the facilities and personnel which made the meeting possible. VI CONTENTS Page RECENT PUBLICATIONS OF PEP HI THEME PROPULSION AND ENERGETICS PANEL VI TECHNICAL EVALUATION REPORT byJ.M.Frankle Reference INTRODUCTION by C.Casci SESSION I - OVERVIEW THE SCIENCE OF COMBUSTION AND FLUID MECHANICS APPLIED TO GUN DESIGN by M.Summerfield SESSION II - LIQUID PROPELLANT GUNS LIQUID PROPELLANT GUN TECHNOLOGY by W.F.Morrison, J.D.Knapton and P.G.Baer LA BALISTIQUE INTERIEURE DES CANONS A BIERGOLS LIQUIDESINJECTES* par A.Melchior et J.M.Auvray IGNITION, COMBUSTION, AND PHYSICAL PROPERTIES OF LIQUID PROPELLANT AT GUN PRESSURES by G.G.Cook and T.O.Andrews SESSION HI - CHARACTERISTICS OF SOLID GUN PROPELLANTS PROPELLANT DEVELOPMENTS IN THE FIELD OF LARGE CALIBER ARTILLERY AMMUNITION* by J.Knobloch, (..Stockman and H.Vasatko MECHANICAL BEHAVIOUR OF PROPELLANT GRAINS UNDER HEAVY DYNAMIC LOAD by G.Zimmermann FIELD ARTILLERY GUN PERFORMANCES RELATED TO TRIPLE-BASE POWDER QUALITY by B.D'Andrea, M.Petrucci and M. Di Lorenzo SESSION IV - GUN BARREL EROSION PRESSURE WAVE - GUN BARREL INTERACTIONS by A.B.Crowley and W.P.C.King INVESTIGATION OF EROSION IN HIGH PERFORMANCE TANK GUN TUBES* by H.Krumm BORE TEMPERATURE AND HEAT FLUX IN A 40 mm GUN BARREL bv B.Lawton 10 'Issued in classified publication CP 392 (Supplement). ^m^m^m ^ i H a aa Reference SESSION V - LOW VULNERABILITY PROPELLANTS FOR GUNS LOVA PROPELLANT DEVELOPMENT! byJJ.Rocchio H DESENSIBILISATION DE CHARGES PROPULSIVES* parR.Mesnil *2 SESSION VI - EXPERIMENTAL AND TEST TECHNIQUES IN INTERIOR BALLISTICS ON THE THERMAL BEHAVIOUR OF THE BARREL DURING THE INTERIOR BALLISTIC CYCLE OF PROPELLANT GUNS by WJ.Kolkert, M.Waas and H.G.The 13 INTERIOR BALLISTICS OF SMALL ARMS: PARTICULAR PROBLEMS by R.Meysmans and E.Celens *** ETUDE EXPERIMENTALE DE LALLUMAGE DUNE CHARGE PROPULSIVE PAR VISUALISATION DU PHENOMENE par C.Berthommier 15 Paper 16 withdrawn MEASUREMENT OF IMPORTANT BALLISTIC FLOW PROPERTIES BY SPECTROSCOPIC TECHNIQUES by G.KIingenberg *7 MODELLING THE BEHAVIOUR OF ADDITIVES IN GUN BARRELS by N.Rhodes and J.Ludwig 1" SESSION VII - GUN IGNITION SYSTEMS NOVEL IGNITION SYSTEMS FOR HEAVY CALIBRE GUNS by C.N.Bowden, G.G.Cook and P.S.Henning 19 IGNITION OF HIGH-PERFORMANCE GUN AMMUNITION by H.Penner 20 SESSION VIII - NEW PROBLEMS IN GUNS COMBUSTION SOUS HAUTES PRESSIONS: CONFRONTATION THEORIE-EXPERIENCE par D.Grune et M.Samirant 21 SESSION IX - TRAVELING CHARGE GUN THEORY ETUDE THEORIQUE DE LA BALISTIQUE INTERIEURE DE CANONS AVEC CHARGE EMBARQUEE* par M.Dervaux et M.Nicolas 22 'Issued in classified publication C"P 392 (Supplement). 1 Discussion only. Paper not available at time of printing. VI n