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

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

Presented by:

Douglas ParkerLead Mechanical Engineer -

J oint Strike Fighter Gun System

General Dynamics Armame

nt & Technical Products

Burlington, Vermont USA

2

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Presentation Outline

Presentation Outline

JSF Program Overview

Key System Requirements

Technical Approach

Internal Gun System (CTOL)

Missionized Gun System (CV & STOVL)

Risk Reduction Testing

Program Status

Path Forward

3

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Lockheed Martin F-35 Variants

Lockheed Martin F-35 Variants

4

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Major Program Changes

Major Program Changes

Program was replanned

due to Aircraft level weight initiatives at LM Aero in 2 nd quarter of 2004.

Gun system weight initiatives include:

New 4-barrel gun (

implemented

Titanium bar

r e l clamps ( under development

Removal of Gun System Contro

l Unit (GSCU regulated power supplies ( implemented

CTOL aluminum access unit (

implemented

CTOL composite

carriers ( under parallel development GDATP entered risk reduction testing with the 5-barrel CTOL system in the 4 th quarter of 2004. 5

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Major Technical Requirements

Major Technical Requirements

25mm 4-barrel gun firing at 3000 spm

Compatible with the following ammunition:

PGU-23/U Target Practice (TP)

PGU-20/U Armor Piercing Incendiary (API)

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 interface for both system types

6

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Gun System Overviews

Gun System Overviews

CTOL

STOVL/CV

Components

Gun Assembly

Helical Ammunition Handling System

Power T

ransmissi on/Hydri ve GS CU

Gun Pod

Components

Gun Assembly

Linear Linkless

Ammo Handling System

Power T

ransmissi on/Hydri ve GS CU 7

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

Gun Heritage

Gun Heritage

4-bar rel derivative

3,000 spm

system

Entered design in March of 2004

Gun mechanism principles retained

Ba si c in stallatio n geometry retained

42 lb weight savings

GAU-12U

A V -8 gun system

25-mm, 4,000 spm

system

Supported at mid-bar

rel clamp 5-bar rel derivative GA

U-12 commonality maximi

ze d

Remote safing

incorporated

Installation requirements

Support at muzzle

New gun housing

8

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

CTOL Gun System

CTOL Gun System

AHS Gun

Power Transmission (4000 psi

h ydraulic) 9

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

CTOL -

G un Installation

CTOL -

G un Installation

GD425 (heavily based off GAU-12 to reduce risk)

AV-8 derivative transfer unit (power through main rotor gear) Power input from Power Transmission through transfer unit Manual drive input at rotor gear for system loading

A/C interface at muzzle clamp (mid-barrel was

the interface used for all previous GAU-12 installations)

Muzzle interface

Recoil adapters

Manual drive

Transfer unit

10

40th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 200540th Annual NDIA Armament Systems GARM Conference

New Orleans, Louisiana April 2005

CTOL -

Ammunition Handling System

CTOL -

Ammunition Handling System

Linear link

less system in serpenquotesdbs_dbs2.pdfusesText_2