25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer...

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25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament & Technical Products Burlington, Vermont USA

Transcript of 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer...

Page 1: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

25mm Gun System for theF-35 Joint Strike Fighter (JSF)25mm Gun System for theF-35 Joint Strike Fighter (JSF)

Presented by:Dave MaherProject Engineer – Joint Strike Fighter Gun SystemGeneral Dynamics Armament & Technical ProductsBurlington, Vermont USA

Presented by:Dave MaherProject Engineer – Joint Strike Fighter Gun SystemGeneral Dynamics Armament & Technical ProductsBurlington, Vermont USA

Page 2: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

239th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

Presentation OutlinePresentation Outline

JSF Program Overview Key System Requirements Technical Approach

Internal Gun System (CTOL)Missionized Gun System (CV & STOVL)

Status Path Forward

Page 3: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

339th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

CTOL

Wing Fold

Gun Fairing

F-16 AV-8B F/A-18C

STOVL CV

Span (ft) 35Length (ft) 50.5Wing Area (ft2) 460

Span (ft) 35Length (ft) 50.5Wing Area (ft2) 460

Span (ft) 43Length (ft) 50.8Wing Area (ft2) 620

Lockheed Martin F-35 VariantsLockheed Martin F-35 Variants

Page 4: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

Major Technical RequirementsMajor Technical Requirements

25mm GAU-12 gun firing at 4000 spm Compatible with the following ammunition:

PGU-23/U Target Practice (TP) PGU-20/U Armor Piercing Incendiary (API) PGU-25/U High Explosive Incendiary (HEI)

Linkless Ammunition Handling System CTOL: 180 rounds, STOVL/CV: 220 rounds

GSCU controls gun functions and operation of doors Reverse clearing gun 2-level maintenance Common loader for both system types

Page 5: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

539th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

CTOL Gun SystemCTOL Gun System

Ammunition Capacity: 182 rounds

Modified GAU-12 gun Linear linkless AHS, clamshell

carrier 4000 psi hydraulic drive AV-8 style transfer unit,

turnaround unit, flex chutes and conveyors

New GSCU & Loader

Page 6: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

639th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

Gun Modifications to GAU-12/UGun Modifications to GAU-12/U

Muzzle Clamp

Mid Barrel Clamp

Transfer Unit

Loading Drive

Barrels

Recoil Spindles

Rear Cover

Remote Safing

Firing/Safing Cam Assembly

Page 7: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

739th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

CTOL Gun System Ammunition Handling SystemCTOL Gun System Ammunition Handling System

Linear Linkless System in Serpentine Arrangement

Proven Clamshell Conveyor Based on F-15E Design

Elliptically Geared Handoff Unit

Positive Round control for High Reliability

Page 8: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

839th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

STOVL Gun SystemSTOVL Gun System

Ammunition Capacity: 220 rounds

Common hydraulic drive, GSCU, Loader

Modified CTOL Gun Helical Ammunition Handling

System (AHS) similar to GPU-5/A

Unique transfer unit, turnaround unit

Page 9: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

939th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

STOVL/CV Gun ModificationsSTOVL/CV Gun Modifications

Identical to CTOL with the following exceptions: New transfer unit (feed system differences) Recoil adapters run aft (installation differences) Power input (different hydraulic drive location)

Power input

Recoil adapter

Elliptical gears

Page 10: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

1039th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

STOVL Gun System Ammunition Handling SystemSTOVL Gun System Ammunition Handling System

Helical tracks

Support tube

Round guides

Linear Linkless System in Helical Arrangement

Proven Bucket Carrier based on GPU-5/A Design

Positive Round Control for High Reliability

Bucket Carriers

Page 11: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

1139th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

ChallengesChallenges

Short Design Cycle Use AV-8 designs where possible Rapid prototyping for long lead castings

Aggressive Schedule for Delivery Release CTOL Units 3 & 4 before Engineering test is

complete

Overlap of CTOL and STOVL/CV Schedules

Page 12: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

1239th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

JSF Gun System Master ScheduleJSF Gun System Master Schedule

2003 2004 2005 2006 2007

CTOL

Fabrication and Assembly

Test

Delivery

CDR JAN 13

AUG, 2005

CDR FEB 1

Design

STOVL/CV

Fabrication and Assembly

Test

Delivery

Design

FEB, 2007

Page 13: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

1339th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

Program StatusProgram Status

Loader QFD System Requirements Review CTOL Preliminary Design Review CTOL Critical Design Review All CTOL parts placed on order STOVL/CV System Design Review

Page 14: 25mm Gun System for the F-35 Joint Strike Fighter (JSF) Presented by: Dave Maher Project Engineer – Joint Strike Fighter Gun System General Dynamics Armament.

1439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 200439th Annual NDIA Gun & Ammunition SymposiumBaltimore, Maryland April 2004

Path Forward Prior to the 2005 Guns & Ammo Symposium

Path Forward Prior to the 2005 Guns & Ammo Symposium

Assemble and Debug CTOL SDD Systems 1 & 2

Complete 10,000 Round Engineering Test on CTOL SDD System 1

Begin 30,000 Round Qual test on SDD System 1

Begin Environmental Qual on SDD System 2

Complete STOVL/CV Critical Design Review