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TMO
U.S. Army TMO’s Towed Targets Program
Briefer:Tony StillTargets Management OfficeTech Mgt DivSFAE-STRI-PM [email protected]
47th Annual Targets, UAVs and Range Operations Symposium
Oct 2009
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FALSE IMPRESSION CAVEAT
It should be explicitly noted that the U.S. Government makes no official commitment nor obligation to provide any additional detailed information or an agreement of sale on any of the systems/capabilities portrayed during this presentation that have not been authorized for release.
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OUTLINE
• Towed Target Platforms (droned/manned)• Various Towed Targets• TMO Towed Target Simulation Capabilities• R&D Efforts• Future Efforts• Summary
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BLUF
TMO has a “basket” of various towed targets
Performance envelope very similar to drone or aircraft towed from (except Gs)
Towed Targets can inexpensively emulate airborne threats
Less Costly Live-Fire Testing/Training (typically < 1/25th cost of towing drone)
TMO has in-house/ and contract capability to design/fab proto-type towed targets to meet customer testing requirements.
Less Costly Acquisition & Tracking Testing
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Typical TMO MQM-107 Tow Target Mission
MQM-107 on launch withtows under wing stations
MQM-107 deploys tow target while en-route to hot leg
MQM-107 parachute recovery
AGT tow fully deployed(ready for live-fire).
Internal tow reel assy
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Manned Aircraft Towing Platforms
RM-30 ReelRM-30B Reeling Machine
Cruise Missile Tow Target deploying from F-16/RM-30
Lear 36 during development of TAPS
T-38 during development of JCHAAT (simulates MQM-107 type launch)
Manned Aircraft used during developmental flight testing(not used during live-fire)
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Snatch Banner TRX-4A
POTA-Tow TIX-4 (3 versions)
Sphere Tow
TMO Towed Targets
CMTT
Aerial Gunnery Tow
TJX-1
TIX-MARS-888RRTT
JCHAAT
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Simulations
MISSILE DATCOM
CBAS
XPATCH
Aerodynamic prediction code. Input the Geometry of the flight vehicle, body configuration, surface roughnessControl surfaces, etc……….out put is aero coefficients and derivatives, center of pressure, etc
Cable Body Aero Simulation: Computes the dynamic motions of a tow body and tow cablebehind the towing aircraft, given the dynamic movement of the towing aircraft.
Enter tow target geometry and materials, predicts RCS signatureas a function of frequency, polarization & and aspect angle.
CBAS- Jr Cable Body Aero Simulation: Static version used for “steady state” flight. Easy to use, (XCEL version). Predicts towline tension, angle, droop, etc.
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Static Droop/Tension Plot From CBAS
0
200
400
600
800
1000
1200
1400
0
100
200
300
400
500
600
250 270 290 310 330 350 370 390 410 430 450
Velocity (Kias)
GENERIC TOW TARGET (80 lbs), 1.5 & 2.0 Miles of 0.085" Zylon Cable
Dro
op (f
t)
Tens
ion
(lbs)
Droop, 2.0 MI
Droop, 1.5 MI
Tension, 1.5 MI
Tension, 2.0 MI
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CBAS Predicted vs Actual Flight Data
0
100
200
300
400
500
600
180 190 200 210 220 230 240 250 260 270 280 290 300
DR
OO
P, F
T ~
TEN
SIO
N, L
B
KIAS
6 FIN CMTT Rad Alt (CBAS updated w/flt data): DROOP AND TENSION2 Miles (10,560') of 0.085" Zylon Line, 76.2 lb Tow
CNc= 0.003232*KIAS + 1.503794 CTc=-0.000044*KIAS + 0.030162
CBAS Droop, ft
CBAS Tens, lb
Baro Droop (ft)
Tens-cal, lbs
Droop
Tension
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CBAS Predicted vs Actual Flight Data
0
10
20
30
40
50
60
70
80
90
100
110
120
130
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150
160-950 -900 -850 -800 -750 -700 -650 -600 -550 -500 -450 -400 -350 -300 -250 -200 -150 -100 -50 0
p,
Range, ft
JCHAAT Cable Shape With KIAS; 320 m 0.085 Zylon Cable
Droop, 250
Droop, 300
Droop, 350
Droop, 400
Cable Angle @ A/CKIAS=250, 3.04 degKIAS=300, 2.43 degKIAS=350, 2.05 degKIAS=400, 1.80 deg
Tow
A/C
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CBAS Sr. Dynamic Prediction Code
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X-Patch RCS Signature Prediction Code
0 10 20 30 40 50 60 70 80 90
RC
S (d
Bsm
)
Azimuth (deg)
Xpatch Nose Design and Analysis
Measured
Xpatch
Which nose-cone provides the best signature for my application?
What is the RCS of each nose-cone?
What should the nose look like as part of my signature budget?
0 15 30 45 60 75 90
RC
S (d
Bsm
)
Azimuth (deg)
Ka-band Fin Analysis: Xpatch vs. Measurement0 degree Roll Orientation
Measurement
Xpatch Ka
•Use RCS prediction codes to prototype target parts prior to fabrication•Xpatch
DoD state-of-the-art codeHigh frequencyBased on Physical Optics and Shoot-and-Bounce Ray Theory
•Generate RCS as a function of look-angle•Analyze scattering features•Coordinate RCS requirements with aerodynamic design and manufacturing trade-offs
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TMO R&D Efforts
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Tow Reel on Manned AC
RM-30B tow reel integration 40th FLTS, Eglin
AT-38 with MQM-107 Tow Launcher
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Recent/ Ongoing Developmental Efforts
Virtual Prototype
Reduced RCS Tow Target & GPS
LOITTAPS Camera Kit for Two-Way Reel
Magnetic Tow LauncherMQM-107 Tow Test Bed
Reduced Radar Tow Target (RRTT)Magnetic Tow Launcher
Low Observable Instrumented Tow (LOIT) – USAF fundedTowed Airborne Plume Simulator (TAPS) – USAF funded
Camera Kit for Two-way Tow ReelMQM-107 Tow Test Bed
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Radar Altimeter Tow Target Flight Test
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Onboard Video Camera for Tow Reel
Video Camera fits on nose of launcher Onboard Monitor
Tow Capture Video
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Tow GPS Efforts
High Accuracy (<1 meter in Z)GPS Tow Capability (to tweak CBAS)
High Accuracy GPS Data Logger Installed in Tow Target
Tow/GPS under wing of launcher Over water flight testing
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GPS Accuracy TestingHolloman AFB, NM
X,Y,Z Accuracy vs Truth Position Data
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Magnetic Tow Launcher Testing
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MQM-107 Tow Test Bed
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MQM-107 Tow Test Bed
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Towed Airborne Plume Simulator (TAPS)Support to Center for Countermeasures (CCM)
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Tandem Towed Targets
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Tandem Towed Targets
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Radar Cross Section (RCS) Measurement at Pt. Mugu
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Radar Cross Section (RCS) Sample
ALL TMO TOWED TARGETS HAVE BEEN MEASURED AT MUGU
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X-Target RCS (plotted in M^2)
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PM ITTS Project Book.ppt 10/26/2009 31
Cruise Missile Tow Target (CMTT)
TOWED BY F-16 OR T-38 FOR SEARCH/TRACK MISSION. TOWED BY MQM-107 FOR SEARCH/TRACK/ LIVE-FIRE.
TOWED ON 5700 FEET OF RADAR TRANSPARENT .065” DIAMETER “ZYLON” TOWLINE
LOW RADAR CROSS SECTION
CAPABLE OF AIRSPEEDS UP TO 450 KNOTS
CAPABLE OF ALTITUDES AS LOW AS 175 FEET ABOVE THE GROUND
DEVELOPED BY TMO
deleted
LENGTH
WEIGHT
MATERIALS
TOWLINE
ALTITUDE
96 INCHES
60 POUNDS FOR MANNED AIRCRAFT VERSION76 POUNDS FOR DRONED VERSIONALUMINUM FUSELAGEPOLYSTYRENE FINS & TAILCONE
.065” DIAMETER (15X1000 BRAID) ZYLON
DROOP UNDER TOWING CRAFT VERIFIED AS FUNCTION OF AIRSPEED/MACH NUMBER
RADAR CROSSSECTION
MEASURED FROM 2-18 GHz
USERS / CUSTOMERS
DESCRIPTION FUNCTIONAL DATA
Cruise Missile Tow TargetCruise Missile Tow Target
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CMTT (7.5 CR) RCS
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Future Potential R&D Efforts
Glide Tow
Height Keeping Tow
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Summary
TMO can develop “user specific” tow targets
Low Radar Cross Sections can be achieved
Tow Targets save money
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Interested in Tow Target Support?
Contact Info:
Tony StillSFAE-STRI-PM ITTS-QE Targets Management OfficeRedstone Arsenal, Al256-842-0377w
