Vertipedia - Vertol CH-46C Sea Knight

Developed in 1958, the Model 107 is an Amphibious transport prototype helicopter. Designated YHC-1A in the US Army, under which the helicopter made its first flight as a military aircraft in August 1959. Capable of operation in any weather condition, equipped with a Stability Augmentation System (SAS) device.

Source: Paul Lambermont with Anthony Pirie. Helicopters & Autogyros of the World. Cassell & Company, 1959. Pages 400-401.

Overview

Data on design, manufacture and status

Design authority: Vertol Aircraft Corporation

Primary manufacturer: Vertol Aircraft Corporation

Parent type: Vertol Model 107/CH-46

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift devices: 2 in Tandem (Fore/aft) configuration

Crew required: 2 in Side-by-side arrangement

Landing gear: Wheels (non-retractable)

Key Characteristics

Data on key physical features

Aircraft Details

Data on aircraft configuration, weights, flight performance and equipment

Layout and Dimensions

Weights and Performance

Engine Details

Primary Lift Device

Cabin Dimensions exclude flight deck.

Overall Dimensions
Overall Height:	5.13 m	16.8 ft
Overall Length:	25.40 m	83.3 ft
Overall Width:	15.24 m	50.0 ft

Airframe Dimensions
Airframe Length:	13.59 m	44.6 ft
Airframe Width:	4.42 m	14.5 ft
Airframe Height:	5.13 m	16.8 ft

Landing Gear Dimensions
Landing Gear Base:	7.59 m	24.9 ft
Landing Gear Track:	3.94 m	12.9 ft

Cabin Dimensions
Cabin Internal Height:	1.83 m	6.0 ft
Cabin Internal Length:	7.37 m	24.2 ft
Cabin Internal Width:	1.83 m	6.0 ft

Cruise Speed: 150 mph (241.402 km/h)

Weights
Max Gross Weight (ground):	9,707 kg	21,400 lb
Max Gross Weight (airborne):
Max Take-off Weight:	9,707 kg	21,400 lb
Empty Weight:	5,702 kg	12,571 lb

Climb Performance
Max Rate of Climb:	7 m/s	1,401 fpm

Hover Performance
Hover Ceiling IGE:
Hover Ceiling OGE:

Limitations
Max Level Flight Speed:	261 km/h	141 kts
Never Exceed Speed:
Service Ceiling:	4,508 m	14,790 ft

Range and Endurance
Max Range:	431 km	233 nm
Max Endurance:

Provided powerplant data is for uninstalled, sea level, static operations.

Powerplant
Number of engines:	2
Designation:	Lycoming T53-L-1 turbine
Manufacturer:	Lycoming Engines

Normal Ratings
Max continuous:
Take-off / rated:	641 kW	860 hp
Intermediate:
Maximum:

OEI Ratings
OEI contingency:
OEI continuous:
OEI 30-second:
OEI intermediate:

May be folded for storage/transport

Main Rotor Characteristics
Diameter:	15.24 m	50.00 ft
RPM:
Direction of Rotation:	Counter-rotating
Hub Type:	Fully articulated

Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:
Blade Tip Geometry:	Flat
Blade Twist:
Number of Blades:	3

Main Rotor Derived Characteristics
Disc Area:	182.41 m²	1963.6 ft²
Disc Loading:	26.61 kg/m²	5.450 lb/ft²
Solidity:

Main Rotor Blade Derived Characteristics
Blade area per blade:
Tip Speed:

Tail Rotor Characteristics
Diameter:
Configuration:	Unknown
Direction of Rotation:	Unknown
RPM:

Tail Rotor Blade Characteristics
Number of Blades:
Blade Construction:	N/A
Blade Chord:
Blade Twist:

Tail Rotor Derived Characteristics
Disc Area:
Solidity:

Tail Rotor Blade Derived Characteristics
Tip Speed:
Blade Area (per blade):

References

References and sources used

Boeing-Vertol 107

VERTOL DIVISION, Boeing Airplane Company
AHS Newsletter, February 1961, February 1961 (page 9)
Periodical

Helicopters & Autogyros of the World

Paul Lambermont, Anthony Pirie
Cassell & Company Ltd., 1959 (page 402)
Book

Jane's Helicopter Markets and Systems

Jane's Information Group Limited
2003 (page 99)
Book

The History of North American Small Gas Turbine Aircraft Engines

Richard A. Leyes II, William A. Fleming
1999 (page 838)
Book

Search at SciTech Connect (OSTI).

Public resources provided by select scholarly and academic sources

Search at European Rotorcraft Forum Document Repository.

Search at IOPScience.

Search at CiteSeerX.

Additional links

Search for at Google Scholar.

Search for at Bielefeld Academic Search Engine (BASE).

Search for at Semantic Scholar.

Search for at CORE (COnnecting REpositories).

Search for at JSTOR.

Number of engines:	2 Turbines
Max Level Flight Speed:	261 km/h	141 kts
Max Range:	431 km	233 nm
Max Endurance:

Vertol CH-46C Sea Knight

Vertol CH-46C Sea Knight

Overview

Configuration

Key Characteristics

Aircraft Details

References

Related VFS Resources

Forum Proceedings

Vertiflite articles

Web files from vtol.org

Webpages from vtol.org

Images from the VFS Gallery

Related Public Resources

Publicly-funded resources provided by the US Government

Public resources provided by select scholarly and academic sources

Additional links

Images

Main Rotor Diameter:	15.24 m	50.00 ft
Max Gross Weight (ground):	9,707 kg	21,400 lb