products
Horizontal stabilizer trim actuators
Triumph Gear Systems is a world leader
in flight trim control, with a special focus
on horizontal stabilizer trim actuation.
Boeing 767 horizontal stabilizer trim actuator
Since 1955, Triumph Gear Systems has
designed, verified, manufactured and sup-
Creating solutions to
fit your needs
Triumph Gear Systems is highly
experienced in meeting customer needs
ported horizontal stabilizer trim actuators
by applying proven design configurations
for six out of ten of the large commercial
and features, including:
transport aircraft developed in the United
•
States, including every large U.S. military
transport. We are highly experienced in
concentric configurations
•
Failsafe dual drivepaths
elements that make horizontal stabilizer
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Hydraulic, electric and hybrid drives
trim actuators some of the most challeng-
•
Failsafe dual hydraulic and
applying the key functional and structural
Boeing C-17 pitch trim actuator
ing and critical items on an aircraft.
The design group at Triumph Gear
Systems utilizes state-of-the-art tools for
design, analysis and collaborative development. We also provide extensive on-site
electromechanical brakes
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Failsafe redundant position feedback
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Electronic interfaces for autopilot
•
BIT/BITE interfaces for digital and
analog systems
verification testing that simulates most
Aerospace performance and environmen-
Lockheed C-5 A/B horizontal stabilizer
A history of excellence
Triumph Gear Systems has been serving
the needs of the Aerospace industry
since the 1940s. Our strength in propulsion and accessory drive transmissions
is matched by our experience in the
development of hundreds of actuation
designs, including utility applications,
high lift systems and flight trim actuation.
Triumph Gear Systems manufactures
horizontal stabilizer trim actuators for a range
of commercial and military aircraft.
Right: Boeing 757
Failsafe dual loadpaths, parallel and
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Operating load and limit load
tal requirements. Our world-class facilities
capabilities
are dedicated exclusively to develop and
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Operating loads to 27,000 kg
support gear systems.
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Limit loads to 42,000 kg
Aircraft and system
Description and function
Limit load
capability
per actuator
Max.
operating
load
Output
speed
Weight
Boeing 727 and 737
horizontal stabilizer trim actuator
Linear ball screw actuator controls
horizontal stabilizer pitch control
surface.
25,000 lbs
12,000 lbs
5 in/sec
50 lbs
Lockheed C-141 horizontal stabilizer
trim actuator
35,000 lbs
Uses a dual load path acme screw
actuator with a 24.5” stroke. Screw
is driven with an electric motor with
reversals through a clutch. Nut is driven
hydraulically.
18,500 lbs
5.7 in/sec
315 lbs
Lockheed C-5-A/B horizontal stabilizer
trim actuator
Linear irreversible acme screw actuator 93,400 lbs
with dual load path and power inputs
provides horizontal stabilization. Two
separate hydraulic motors are used to
power actuator, one for acme nut and
one for acme screw.
54,000 lbs
1.04/sec
670 lbs
Boeing 757 horizontal stabilizer
trim actuator
Used to control horizontal stabilizer.
Dual load path 25.3” ball screw actuator is used. Fail-operational (fail-safe)
design includes differential drive with
controls and hydraulic power source
redundancy.
38,700 lbs
31,120 lbs
78.01 rpm
225 lbs
Boeing 767 horizontal stabilizer
trim actuator
47,300 lbs
Used to control horizontal stabilizer.
Dual path ball screw actuator with a
stroke of 24.4” is used. Fail-operational
design consists of differential drive with
controls and hydraulic power source
redundancy.
41,300 lbs
81.33 rpm
312 lbs
Boeing DC-10 horizontal stabilizer
trim actuator
Uses a spur differential gear train to
allow single or dual motor operation
without affecting torque input. A
motor-driven rotary actuator is used for
positioning horizontal stabilizer.
20,000
in-lbs
43 rpm
Boeing C-17 horizontal stabilizer
trim actuator
Dual load path ball screw actuator with 73,240 lbs
a stroke of 33.8 inches. Fail-operational
design consisting of a differential drive
with redundant controls and hydraulic
power source.
25,000 lbs
0.55 in/sec
Park City, Utah
Triumph Gear Systems, Inc.
6125 Silver Creek Dr.
Park City, Utah 84098
Telephone:
Facsimile:
AOG hotline:
Web site:
GTP 7903
+(1) 435-649-1900
+(1) 435-649-4050
+(1) 435-647-2759
http://www.triumphgs.com
http://www.triumphgroup.com
33,000
in-lbs
46 lbs
(gearbox only)
332 lbs
Macomb, Michigan
Triumph Gear Systems-Macomb, Inc.
15375 23 Mile Rd.
Macomb, Michigan 48042-4000
Telephone: +(1) 586-781-2800
Facsimile: +(1) 586-781-0152
The information in this document is the property of Triumph Group, Inc.
and Triumph Gear Systems, and may not be copied, communicated to a
third party, or used for any purpose other than that for which it is supplied
without the express written consent of Triumph Group, Inc. or Triumph
Gear Systems,
While this information is given in good faith and is based upon the latest
information available to Triumph Group, Inc. and Triumph Gear Systems,
no warranty or representation is given concerning such information, which
must not be taken as establishing any contractual or other commitment
binding upon Triumph Group, Inc., Triumph Gear Systems, any subsidiary
or any associated company.
© 2005 Triumph Gear Systems