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Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake LtCol Tim “Boomer” Jorris, USAF 412 OG/Hypersonics CTF NAVAIR Public Release SPR-2013-303 Distribution Statement A approved for public release, distribution is unlimited. NAVAIR public release SPR-2013-303 1
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Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake … Conference... · Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake ... Is it Super Hornet wide or restricted

Jun 27, 2018

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Page 1: Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake … Conference... · Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake ... Is it Super Hornet wide or restricted

Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake LtCol Tim “Boomer” Jorris, USAF 412 OG/Hypersonics CTF

NAVAIR Public Release SPR-2013-303 Distribution Statement A approved for public release, distribution is unlimited.

NAVAIR public release SPR-2013-303 1

Page 2: Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake … Conference... · Maj Zach “Libi” McCarley, USMC VX-31, NAWS China Lake ... Is it Super Hornet wide or restricted

Gun

Problem

DOE

Methodology

Analysis

Lessons

2

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Problem: Fleet reporting valid attacks on soft targets with enemy walking away unscathed.

Should be a hit ... but NOT!

NAVAIR public release SPR-2013-303

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Rumors of AESA problems

Lots of anecdotal evidence

TOPGUN conducted TAC T&E 3 mil long

2 mils right (8 mil gun dispersion)

Is the software CCIP prediction good or not?

Is it Super Hornet wide or restricted to AESA?

What other factors might affect solution?

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TOPGUN said no (3 mils / 2 mils)

What can I offer to the problem?

Scientific method?

Disciplined flight test?

Statistical significance?

If so, then how do I get results with

statistical significance?

If so, is it operationally significant?

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Ammo M56 / M55 PGU-28 / PGU-27

Software Legacy / Assembly Language / X-Build / 25X HOL / C++ / H8

BAAT (Best Altitude Above Target) Radar / AGR (Air – Ground Ranging) DTED (Digital Terrain Elevation Data)

Radar APG-73 (Legacy) APG-79 /AESA (Active Electronically Scanned Array)

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Example: 250 ft / 200 ft = 1.25

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Ammo M56 / M55 PGU-28 / PGU-27

Software Legacy / Assembly Language / X-Build / 25X HOL / C++ / H8

BAAT Radar (AGR) DTED

Radar APG-73 APG-79

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Jet type runs with ammo type

PGU-28 M56 PGU-27 all ammo

25X APG-73 AGR (no Legacy AESA) 5 5 5 15

25X APG-73 AGR (no Legacy AESA) 5 5 5 15

25X APG-73 AGR (no Legacy AESA) 5 5 5 15

25X APG-73 DTED (no Legacy AESA) 5 5 5 15

25X APG-73 DTED (no Legacy AESA) 5 5 5 15

25X APG-73 DTED (no Legacy AESA) 5 5 5 15

H8 APG-73 AGR 5 5 5 15

H8 APG-73 AGR 5 5 5 15

H8 APG-73 AGR 5 5 5 15

H8 APG-73 DTED 5 5 5 15

H8 APG-73 DTED 5 5 5 15

H8 APG-73 DTED 5 5 5 15

H8 AESA AGR 5 5 5 15

H8 AESA AGR 5 5 5 15

H8 AESA AGR 5 5 5 15

H8 AESA DTED 5 5 5 15

H8 AESA DTED 5 5 5 15

H8 AESA DTED 5 5 5 15

total runs 90 90 90

sorties 18 18 18

rounds per sorties 250 250 250

total rounds 4500 4500 4500

Run 1/2 AGR and 1/2 DTED -> 12 runs each way -> stat sig both ways

∑ = 54 sorties?

Config:

A

B

C

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Y = A (ammo) + B (BAAT) + RS + A·B + A·RS + B·RS

RS -Radar/SW

B-B

AA

T

80 Runs = 10 sorties

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Statapult = DOE

Boomer can explain?

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Principles

Randomization

Replication

Blocking

Orthogonality

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Y = A (ammo) + B (BAAT) + RS + A·B + A·RS + B·RS

B-B

AA

T

RS-Radar/SW

54 Sorties 10 Sorties 6 Sorties!

95% Confidence 80% Power

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winds

temperature

pressure

pilot

aircraft

cannon

ammunition lot

slant range

dive angle

airspeed NAVAIR public release SPR-2013-303 26

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winds

temperature

pressure

pilot

aircraft

cannon

ammunition lot

slant range

dive angle

airspeed

Measure

Standardize

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Ammo

Profile

Data requirements

Hits

Aim Point

Range

Bullet Count

Wind

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Combat

M56 High explosive incendiary (HEI)

PGU-28 Semi-armor piercing high explosive incendiary (SAPHEI)

Training

M55

PGU-27

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Hits

Aim Point

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IRSSS is an acoustic-based scoring system for supersonic projectiles

System consists of:

Microphone array in front of the strafing target(s)

Downrange equipment rack hardwired to the target microphones

Outdoor-mounted weather station adjacent to the downrange rack

Scoring console remote from the range

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• Mach Angle = sin-1(c / Vp)

• Lateral Velocity VL = Vp * tan() = c / cos()

c

Vp

VL

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0

5

10

15

20

25

30

He

ig

ht A

bo

ve

T

ra

ns

du

ce

rs

(ft)

-20 -15 -10 -5 0 5 10 15 20 Dist. From Center of Transducers (ft)

T1 T2 T3

T1-T2 T2-T3 T1-T3

Projectile Passing Thru Point 2

Point 2

(-12.5, 12 .99)

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Air Force Solution

Marine Solution

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Operational Significant

Operational Significant

Operational Significance

Operational Significance

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NAVAIR public release SPR-2013-303 Analyze data between flights

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Instrumentation

SW Tools

Measuring hits

Measuring aim point

Stats – Design Expert

Results

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55

significant

significant

significant

not significant

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RS

Op

erat

ion

al S

ign

ific

ance

NAVAIR public release SPR-2013-303 56 Statistical Significance ≠ Operational Significance

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Op

erat

ion

al S

ign

ific

ance

significant

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Op

erat

ion

al

Sig

nif

ican

ce

significant

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Pointed Travelling

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Boeing explained wind compensation

Software modification in progress

H12 SCS around 2014 release

Procedural / Tactical options based on insight

Weapons Schools

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Design of Experiments ≠ Test Methodology

See the target

Extracting HUD video data

Analysis data between flights

Gun Malfunction

Target Visibility

Winds

Statistical Significance may ≠ Operational

Significance

Statistical Significance = Defensible Results

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Maj Zach “Libi” McCarley, USMC [email protected] [email protected] LtCol Tim “Boomer” Jorris, USAF [email protected] [email protected]