Sikorsky HH-52A Seaguard

 

A derivative of the world’s first truly amphibious helicopter, the Sikorsky HH-52A entered service with the US Coast Guard in 1962, and remained in service until 1989. The first turbine-powered helicopter operated by the USCG, the HH-52 could land and take off from the water. It had a boat-shaped hull and even carried an anchor.

 

Credited with saving over 15,000 lives, the HH-52A was small enough to be deployed from USCG cutters, but was designed to carry a crew of three and up to ten rescuees. It carried a record 12 rescuees, along with the crew, during the Burmah Agate maritime disaster in 1979.

 

 

Attribution

Attribution
Overview
Parent type Sikorsky S-62/HH-52
Variant *No Variant assigned
Design authority Sikorsky Aircraft Corp.
Primary manufacturer Sikorsky Aircraft Corp.
Key Characteristics
Operational status Out of service
Max gross weight (ground) 3,765 kg 8,300 lb
Crew 3
Seating arrangement Side-by-side
Configuration
VTOL type Helicopter
Compound type None
Lift configuration Single main rotor
Control device type Tail rotor
Features
Number of engines 1
Number of propulsors 0
Number of lift devices 1
Number of control devices 1
Milestones associated with the Sikorsky HH-52A Seaguard
1979 A Sikorsky HH-52A rescues 22 people from the Burmah Agate maritime disaster

Sikorsky HH-52A Seaguard

 

Dimensions for HH-52

 

 

Image coming soon!

 
Overall Dimensions
Overall height   148 4.87 m 16.0 ft
Overall length   148 18.97 m 62.3 ft
Overall width   148 15.85 m 52.0 ft
Note: All dimensions may be governed by the the diameter of an external rotor.
Airframe Dimensions
Airframe height   148 4.33 m 14.2 ft
Airframe length   148 13.58 m 44.5 ft
Airframe width   148 4.57 m 15.0 ft
Landing Gear Dimensions
Landing gear type Wheels (partially retractable)
Landing gear base  
Landing gear track   148 3.71 m 12.2 ft
Cabin Dimensions
Cabin height  
Cabin length  
Cabin width  

Sikorsky HH-52A Seaguard

 

De-rated from 1250 shp to 730 shp for this application

 

 

Image coming soon!

Image coming soon!

Powerplant
Manufacturer GE Aviation
Powerplant designation T58-GE-8 (HH-52)
Type Turbine
Normal Ratings (uninstalled, sea level, static)
Max. continuous power  
Intermediate power  
Maximum power  
Take-off power  [ 148 ] 544 kW 730 hp
   

Sikorsky HH-52A Seaguard

 

HH-52 main rotor

 

 

Attribution

Attribution
Main Rotor Characteristics
Hub type Fully articulated
Direction of rotation Counterclockwise
Diameter   148 15.85 m 52.00 ft
RPM  
Main Rotor Blade Characteristics
Blades per rotor 3
Blade chord   148 0.417 m 1.37 ft
Blade twist  
Construction
Tip geometry Conventional
Main Rotor Derived Characteristics
Disk area 197.30 m² 2,123.8 ft²
Disk loading 19.08 kg/m² 3.908 lb/ft²
Solidity 0.0502
Note: disk loading is based on max gross weight (on ground) to help compare the widest range of aircraft.
Main Rotor Blade Derived Characteristics
Area per blade 3.30 m² 35.5 ft²
Blade tip speed  
Note: blade area is calculated as rotor radius times blade chord and ignores any root cut-out.

Sikorsky HH-52A Seaguard

 

Tapered chord blade

 

 

Attribution
 
Tail Rotor Characteristics
Hub type Fully articulated
Direction of rotation Top blade aft
Diameter   148 2.67 m 8.75 ft
RPM  
Configuration Pusher
Tail Rotor Blade Characteristics
Blades per rotor 2
Blade chord   148  
Blade twist  
Construction
Tail Rotor Derived Characteristics
Disk area 5.59 m² 60.1 ft²
Solidity  
Tail Rotor Blade Derived Characteristics
Area per blade  
Blade tip speed  

Sikorsky HH-52A Seaguard

 

NOTE: the performance data shown is for the aircraft in the standard, clean configuration and weights detailed below, at International Standard Atmosphere (ISA) sea-level conditions. Any deviation from these conditions will be defined in the general notes below, or in any references accompanying a specific data point.

 

HH-52 performance

 

 
Weights
Maximum take-off weight 3,765 kg 8,300 lb
Empty weight 2,306 kg 5,084 lb
Useful load 1,459 kg 3,217 lb
Empty weight fraction 0.612
Limitations
Never exceed speed  
Max. level flight speed   148 176 km/h 95 kts
Service ceiling   148 3,414 m 11,200 ft
Normal Ratings (uninstalled, sea level, static)
Powerplant GE T58-GE-8 (HH-52)
Number of engines   1
Max. continuous power  
Intermediate power  
Maximum power  
Take-off power   148 544 kW 730 hp
Note: all powers quoted are per engine.
Range and Endurance
Range (no reserve)   148 741 km 400 nm
Endurance (no reserve)  
Hover Performance
Hover ceiling IGE  
Hover ceiling OGE  
Climb Performance
Maximum rate of climb  

Sikorsky HH-52A

 

Operated By
United States Coast Guard Out of service

Sikorsky HH-52A

 

Forum Proceedings related to the Sikorsky HH-52A

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Journal of the AHS

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NASA/NACA technical documents, reports, citations, images and more from the NASA Technical Reports Server

Technical reports related to the Sikorsky HH-52A:

 

 

Full-text patent search at the US Patent and Trademark Office

US patents related to the Sikorsky HH-52A issued since 1975:

 


 

Google Books related to the Sikorsky HH-52A

 

Sikorsky Hh-52a

Lennart Lundh

2003 - Schiffer Publishing

In The Sikorsky HH-52A, noted historian Lennart Lundh presents this diminutive helicopters story for the first time. Covered are design details, international service, licensed production by Mitsubishi, and the story of the Seaguards use by the U.S. Coast Guard. A record of each airframes history is included, as are photographs of three-quarters of the S-62As, S-62Js, and HH-52As produced. Of special interest are the recollections of nearly a score of Coast Guard pilots and aircrew, and the text of the Armys evaluation of the first production airframe.

 

Florida Warplanes

Harold A. Skaarup

2010-11-01 - iUniverse

This aviation handbook is designed to be used as a quick reference to the classic military heritage aircraft that have been restored and preserved in the state of Florida. The aircraft include those fl own by members of the United States Air Force, the United States Navy, the United States Army, the United States Marine Corps, the United States Coast Guard, the Air and Army National Guard, and by various NATO and allied nations as well as a number previously operated by opposition forces in peace and war. The interested reader will find useful information and a few technical details on most of the military aircraft that have been in service with active flying squadrons both at home and overseas. 160 selected photographs have been included to illustrate a few of the major examples in addition to the serial numbers assigned to American military aircraft. For those who like to actually see the aircraft concerned, aviation museum locations, addresses and contact phone numbers have been included, along with a list of aircraft held in each museum’s current inventory or on display as gate guardians throughout the State of Florida. The aircraft presented in this edition are listed alphabetically by manufacturer, number and type. Although many of Florida’s heritage warplanes have completely disappeared, a few have been carefully collected, restored and preserved, and some have even been restored to flying condition. This guide-book should help you to find and view Florida’s Warplane survivors.

 

Helicopters

Stanley S. McGowen

2005-01-01 - ABC-CLIO

Helicopters: An Illustrated History of Their Impact covers the development of helicopters from the first successful machines in the early 1900s to their current status as a key component of combat planning around the world and as one of the military's most versatile and effective tools. Helicopters is a story of ongoing innovation in the face of stubborn resistance. Time and again, helicopter designers developed more capable rotorcraft and then had to lobby skeptical military planners to get them deployed. With expert analysis of all significant models, colorful portrayals of key figures in the evolution of helicopters, and vivid images of rotorcraft on the drawing board and in action, this revealing volume shows how an often denigrated machine became an essential military asset around the world, as well as an important tool in a number of areas, from police work to medical evacuation to farming.

 

California Warplanes

Harold Skaarup

2012 - iUniverse

This aviation handbook is designed to be used as a quick reference to the classic military heritage aircraft that have been restored and preserved in the state of California. The aircraft include those flown by members of the US Air Force, the US Navy, the US Army, the US Marine Corps, the US Coast Guard, the Air and Army National Guard units, and by various NATO and allied nations as well as a number of aircraft previously operated by opposition forces in peace and war. The interested reader will find useful information and a few technical details on most of the military aircraft that have been in service with active flying squadrons both at home and overseas. 150 selected photographs have been included to illustrate a few of the major examples in addition to the serial numbers assigned to American military aircraft. For those who would like to actually see the aircraft concerned, aviation museum locations, addresses and contact phone numbers, websites and email addresses have been included, along with a list of aircraft held in each museum's current inventory or that on display as gate guardians throughout the state of California. The aircraft presented in this edition are listed alphabetically by manufacturer, number and type. Although many of California's heritage warplanes have completely disappeared, a few have been carefully collected, restored and preserved, and a good number have been restored to flying condition. This guide-book should help you to find and view California's Warplane survivors.

 

The Coast Guard in San Diego

Coast Guard Sector San Diego

2010 - Arcadia Publishing

Located a few miles north from the border of the United States and Mexico, the U.S. Coast Guard has maintained a continual presence in San Diego since 1935. It was in May of that year that a single air detachment, led by Cdr. Elmer F. Stone, began operating out of a commercial hangar at Lindbergh Field. From those humble beginnings, a base was constructed on 23 acres of tidelands adjacent to the airstrip and eventually formed into Sector San Diego. Through the years, their units and missions have evolved as new technology and changing world events dictated new missions for the Coast Guard. Today Coast Guard Sector San Diego stands as a model of interagency cooperation for the Department of Homeland Security as the Coast Guard works with other federal agencies to protect San Diego's maritime domain.

 

Fundamentals of Aircraft and Rocket Propulsion

Ahmed F. El-Sayed

2016-05-25 - Springer

This book provides a comprehensive basics-to-advanced course in an aero-thermal science vital to the design of engines for either type of craft. The text classifies engines powering aircraft and single/multi-stage rockets, and derives performance parameters for both from basic aerodynamics and thermodynamics laws. Each type of engine is analyzed for optimum performance goals, and mission-appropriate engines selection is explained. Fundamentals of Aircraft and Rocket Propulsion provides information about and analyses of: thermodynamic cycles of shaft engines (piston, turboprop, turboshaft and propfan); jet engines (pulsejet, pulse detonation engine, ramjet, scramjet, turbojet and turbofan); chemical and non-chemical rocket engines; conceptual design of modular rocket engines (combustor, nozzle and turbopumps); and conceptual design of different modules of aero-engines in their design and off-design state. Aimed at graduate and final-year undergraduate students, this textbook provides a thorough grounding in the history and classification of both aircraft and rocket engines, important design features of all the engines detailed, and particular consideration of special aircraft such as unmanned aerial and short/vertical takeoff and landing aircraft. End-of-chapter exercises make this a valuable student resource, and the provision of a downloadable solutions manual will be of further benefit for course instructors.

 

Naval aviation news

United States. Naval Air Systems Command
United States. Office of the Chief of Naval Operations
Naval Historical Center (U.S.)

1990-01

Book description not available.

 

U.S. Coast Guard aircraft since 1916

Arthur Pearcy

1991 - Naval Inst Pr

The first book to detail all aircraft used since the Coast Guard introduced its air arm over 80 years ago.

 

USCG Air Station and Group Astoria

Susan L. Glen

2012 - Arcadia Publishing

US Coast Guard Air Station and Group Astoria was established on August 14, 1964, at Tongue Point in Astoria. It is currently located at the Warrenton-Astoria Regional Airport in Warrenton, Oregon. The group includes Air Station Astoria, the Aids to Navigation Team, Station Grays Harbor at Westport, Washington, Station Cape Disappointment in Ilwaco, Washington, and Station Tillamook Bay at Garibaldi, Oregon. They also supply support for the USCG cutter Alert (WMEC-630), USCG cutter Steadfast (WMEC-623), USCG cutter Fir (WLB-213), the National Motor Lifeboat School, the Electronic Support Detachment at Astoria, the Advanced Rescue Swimmer School, the Marine Safety Detachment, and the Advanced Helicopter Rescue School. In August 2011, the unit became USCG Sector Columbia River.

 

Arizona Warplanes

Harold A. Skaarup

2010-04-02 - iUniverse

This aviation handbook is designed to be used as a quick reference to the classic military heritage aircraft that have been restored and preserved in the state of Arizona. The aircraft include those fl own by members of the United States Air Force, the United States Navy, the United States Army, the United States Marine Corps, the United States Coast Guard, the Air and Army National Guard, and by various NATO and allied nations as well as a number previously operated by opposition forces in peace and war. The interested reader will find useful information and a few technical details on most of the military aircraft that have been in service with active flying squadrons both at home and overseas. 100 selected photographs have been included to illustrate a few of the major examples in addition to the serial numbers assigned to American military aircraft . For those who like to actually see the aircraft concerned, aviation museum locations, addresses and contact phone numbers have been included, along with a list of aircraft held in each museum’s current inventory or on display as gate guardians throughout the State of Arizona. The aircraft presented in this edition are listed alphabetically by manufacturer, number and type. Although many of Arizona’s heritage warplanes have completely disappeared, a few have been carefully collected, restored and preserved, and some have even been restored to flying condition. This guide-book should help you to find and view Arizona’s Warplane survivors.

 

 

Sikorsky HH-52A Seaguard

Aircraft Notes

Ref. Author(s) Title Source Date Type
148 Devine, V S-62 (HH-52A, S-62A, S-62B, S-62C) Igor Sikorsky Historical Archives, Sikorsky Product History 14 Jun 2015 Website
  Comprehensive history of the design and development of the model
148 Devine, V S-62 (HH-52A, S-62A, S-62B, S-62C) Igor Sikorsky Historical Archives, Sikorsky Product History 14 Jun 2015 Website
  Comprehensive history of the design and development of the model