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KEVIN MINER
WEAPON SYSTEMS &
TECHNOLOGY DIRECTORATE
LOW RECOIL, HEAT TRANSFER MITIGATING
RAREFACTION WAVE GUN ENGINEERING, MODELING
AND LARGE CALIBER SYSTEM DEMONSTRATORDEVELOPMENT
BRIEFING FOR THE NDIA GUNS AND MISSILE SYSTEMS
CONFERENCE - APRIL 23 26, 2007
ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
SONIC RAREFACTION WAVE GUN TECHNOLOGY
ENGINEERING DEVELOPMENT
MODELING & SIMULATION DESIGN & ENGINEERING
PERFORANCE TESTING
TRANSITION
SUMMARY
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Sonic RAREFACTION WAVE GUN (RAVEN) is a Projectile Launch Methodthat achieves:
9 Unprecedented Reductions in Recoil Impulse
9 Significant Reductions in Gun Barrel Heating
9 Muzzle Blast Reduction
While Maintaining the Efficiency & High Projectile Velocity of Conventional Guns (No Lossin Projectile Velocity)
RAVEN was Invented at Benet Laboratories,US Army, Oct 2002 by Dr. Eric Kathe(Patent: 6,460,446)
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Ignition
Breech Vent Opens
While Projectile is
Still In-Bore
Sonic Rarefaction
Wave Catches
Projectile At the
Gun Muzzle
No Velocity
Loss
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
50% - 100% Recoil Reduction for No Veloci ty Loss
High Velocity Guns Can Be Nearly Recoil less
High Efficiency Recoilless Operation Obtainable
Can Maintain High Lethality on a Lighter Platform
10 20 30 40 50 60 700
10
20
30
40
50
60
RecoilMomentum[K
N*s]
Gross Vehicle Mass [tons]
M551 116% OSL
M1A1 49% OSLM8 AGS 128% OSL
M60A1 43% OSL
105mm RAVEN 54% OSL
Ogorkiewicz Stability Limit (OSL)
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Approximately 50% Reduction in Barrel Heating
Enables Lightweight Gun Barrel Technology
Allows Increased Firing Rate
Mitigates Need for Erosion Protective Coatings
May Use More Energetic Propellants
Approximately 2/3 Reduction in Muzzle Blast
Lower Vision Obscuration
Lower Overpressure on Front of Vehicle/Platform
Control of Muzzle Velocity via Rarefaction Wave (ex.: artillery zoning)
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
35mm Rarefaction Wave Gun Demonstration
35mm Proof-of-Principle RAVEN Cannon
-20 2 4 6 8 10
50
100
150
200
250
300
350
400
Pressure[MPa]
Shot Exit
Venting58 ksipeak
Proj.
Inert ial Breech Vent
External Breech Guide
Thrust Generating Exhaust Nozzle
9 61% Recoil Reduction
9 41% Heat Transfer Reduction
9 No Loss of Muzzle Velocity
Time (msec)
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
ENGINEERING DEVELOPMENT & DEMONSTRATION
ARDEC Technology Base Program Objectives
9 Advance Sonic Rarefaction Wave gun (RAVEN) technology (from TRL 4) Enabling
- Lightweight Cannons & Firing Platforms
- Reduced Heat Transfer / Higher Rates of Fire
9Demonstrate TRL 5 for large caliber RAVEN Cannon (Direct & Indirect Fire)
9 Integrate State-of-the-Art materials and processing technology for minimum systemweight and maximum performance
9 Transit ion technology into a solution for Army and other Defense/Commercial needs
Gun & Ammo Design,
Systems Engineering
Advanced Interior
Ballistics Models
Advanced Materials
Development & Application
Design & Testing,
Fabrication
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Direct Fire RAVEN Demonstrator (FY06 Design, FY07 Build & Test)
Based on 105mm FCS MRAAS Direct & Indirect Fire Cannon
Swing Chamber Allows Rear Venting & Rapid Fire
Rear Venting Cased Telescoped Ammunition (Slug Projecti le)
Inertial Breech Vent to Expansion Nozzle (Thrust Generated)Split Nozzle (Inertial Breech Cast Steel Outer Nozzle Slides OverComposite/Steel Fixed Inner Gun Nozzle)
Next Generation RAVEN Demonstrator (FY07 Design, FY08 Build & Test)
Design for Minimum Weight Advanced Materials
Alternative & More Efficient Vent Methods
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Modeling & Simulation
New 1-D Finite Volume Interior Ballistics & Dynamics RAVEN Gun Design Tool
- Validated with 35mm RAVEN Closed Breech & Vented Firing Data
- Includes Recoil Brake, Muzzle Brake, Thrust, Heat Transfer Models
Computational Fluid Dynamics_Fluent, GTBL, NGEN
- 2-D Axis-Symmetric Fixed and MDM Modeling ofVent Gas f low
- Thrust, Heat Transfer & Shock Structure Analysis
- NGEN/CFD_Fluent Coupling (ARL/ARDEC FY07 08)
- Erosion Modeling (ARDEC FY07 FY08)
- Blast Field Modeling (SEA, Inc. FY08)
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Gas Recuperator Cyl. (2)
Hydraulic Recoil Cyl. (4)
Trunnion
Cradle
Cannon TubeBreech Ring
Swing Chamber
CompositeGun Nozzle
Cast Steel InertialBreech Nozzle Breech Nozzle
Support Vanes
System Trunnion Impulse Muzzle Energy* Energy/Impulse
105mm M68/M900 19,100 NS 7.86 MJ 412
105mm MRAAS/Slug 23,580 NS 8.97 MJ 380
120mm M256/M829A3 29,400 NS 11.7 MJ 398
105mm RAVEN 9,852 NS 8.76 MJ 889
105mm RAVEN PrototypeDemonstrator Components
58% Recoil ReductionOver RAVEN Closed Breech& FCS MRAAS Baseline
* Ambient
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
Performance Testing
Hardstand Testing _ M&S Validation
Interior Ballistics Engineering Data
Recoil Dynamics Engineering Data
Thermal Measurements
Blast Field Characterization
Light Weight Vehicle Platform Testing
Stability Analysis
Blast Field Characterization
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
FY07 FY08 FY09 FY10+
CURRENT
STATETECHNOLOGY DEVELOPMENT
& DEMONSTRATION ENDSTATE
Modeling & Simulation
Validated with Test Data
Gun & Ammo Engr. Solut ions
Applying RAVEN Technology
Advanced Materials &
Processes Development
Spiral Development Medium & Large Caliber Technology Demonstrators
Light WeightLight Weight
Direct & Indirect FireDirect & Indirect Fire
RAVEN LaunchersRAVEN Launchers
Solutions EnablingSolutions Enabling
Increased LethalityIncreased Lethality
Solutions EnablingSolutions Enabling
Lightweight GunLightweight Gun
PlatformsPlatforms
105mm Direct
Fire Designed
M&S Tools
Prepared
155mm In-Direct
Fire Concepts
105mm Direct
Fire Fabricated
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ARDECARDEC Innovative Armament Solutions for Today and Tomorrow
LOW RECOIL, HEAT TRANSFER MITIGATING RAREFACTION
WAVE GUN ENGINEERING, MODELING AND LARGE
CALIBER SYSTEM DEMONSTRATOR DEVELOPMENT
SUMMARY
State-of-the-Art Design, Analysis, M&S and Fabrication
Designed Utilizing State-of-the-Art Modeling & Simulation and Design Tools
Maximum Use of Advanced Materials & Manufacturing Processes
RAVEN is a Breakthrough Generic Gun Technology that will L ighten the Force &Pave the Way for Next Generation High Mobil ity Projecti le Launcher Systems
Light Weight Direct & Indirect Fire Systems Gun Systems
Mounted & Robotic Ground Platforms or Individual Weapons
Ground, Aerial, Naval or Amphibious Platforms
Contact: [email protected]