Quantcast Chapter 3 Stabilized Glide Slope Indicator System
 

Click here to make tpub.com your Home Page

Page Title: Chapter 3 Stabilized Glide Slope Indicator System
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

CHAPTER 3
STABILIZED GLIDE SLOPE INDICATOR SYSTEM
CHAPTER LEARNING OBJECTIVES
Upon completion of this chapter, you should be able to do the following:
Describe the procedures to follow when
Describe the stabilized glide slope indicator
troubleshooting the SGSI system
(SGSI) system and its associated components.
Describe the procedures to follow when
Identify the purpose and principles of operation
performing maintenance on the SGSI system
of the components of the SGSI system.
The stabilized glide slope indicator (SGSI) system
indicates to the pilot of the approaching aircraft whether
consists of a GSI cell mounted on top of an electro-
the aircraft is above (green), below (red), or on (amber)
hydraulic stabilized platform. The GSI cell is an optical
the correct glide slope. By varying the aircraft altitude
viewing system used to indicate to a pilot the aircraft
to keep the amber light bar visible, the pilot maintains
approach angle to a landing platform or ship. The GSI
the correct glide path to the ship's landing pad. The bar
system is an electrohydraulic optical landing aid de-
of light is formed by the combined actions of source
signed for use on ships equipped for helicopter opera-
light, Fresnel lens, and lenticular lens.
tions. By use of the SGSI, a helicopter pilot may visually
To steady the GSI with respect to the pitching and
establish and maintain the proper glide slope for a safe
rolling motions of the ship, the light cell is mounted on
landing. The system is self-contained, relying on the
an electrohydraulic stabilized platform. This equipment
ship for 115 volts ac 400-Hz and 440 volts ac 60-Hz
uses a local gyro for reference and develops electronic
power.
error signals that, in turn, control hydraulic cylinders
The GSI, which is mounted on a stable platform,
that move the platform in the opposite direction to the
provides a single bar of light either green, amber, or red
ship's pitch and roll axis. The system incorporates a
(fig. 3-1). The cell face acts as a window through which
failure detection circuit that turns off the lights in the
the pilot views the light. The color of the light bar
event of stabilization failure.
F'igure 3-1.--Glide slope indicator and light beam.
3-1

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.
6230 Stone Rd, Unit Q Port Richey, FL 34668

Phone For Parts Inquiries: (727) 493-0744
Google +