The AH-1P was an interim part of a long-term modernization of AH-1Q/S Cobras. It featured an improved, low-reflectivity glass canopy with enhanced crew safety features, as well as state-of-the-art instrumentation and various avionics and drivetrain upgrades. 100 AH-1P Cobras were delivered to the Army between 1977 and 1978.

Overview

Data on design, manufacture and status

Design authority: Bell Helicopter Textron, Inc.

Primary manufacturer: Bell Helicopter Textron, Inc.

Parent type: Bell Model 209/AH-1 Cobra

Aircraft status: Status unknown

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 2

Crew seating: Tandem

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Airframe width includes stub wings. While there is some variation among Cobra variants, most fuselage widths without stub wings are .914 m (3 ft).

Overall Dimensions
Overall Height: 4.10 m 13.5 ft
Overall Length: 16.14 m 53.0 ft
Overall Width: 13.41 m 44.0 ft
Airframe Dimensions
Airframe Length: 13.77 m 45.2 ft
Airframe Width: 3.15 m 10.3 ft
Airframe Height: 3.11 m 10.2 ft
Landing Gear Dimensions
Landing Gear Base: 3.27 m 10.7 ft
Landing Gear Track: 2.13 m 7.0 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Weights
Max Gross Weight (ground):  
Max Gross Weight (airborne):  
Max Take-off Weight:  
Empty Weight:  
Useful Load:  
Empty Weight Fraction:  
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range:  
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Powerplant
Number of engines: 1
Designation: Lycoming T53-L-703 turbine
Manufacturer: Lycoming Engines
Normal Ratings
Max continuous:  
Take-off / rated:  
Intermediate:  
Maximum: 1343 kW 1800 hp
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

B540 blade for two-bladed Cobra main rotors.

Main Rotor Characteristics
Diameter: 13.40 m 43.96 ft
RPM: 324.0 rpm 324.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Flex-beam, stiff-in-plane teetering hub
Main Rotor Blade Characteristics
Blade Construction: Bonded aluminum spar and skin; nomex honeycomb core
Blade Chord: 0.686 m 2.25 ft
Blade Tip Geometry: Square-edged tips
Blade Twist: -0.175 rad -10.000 deg
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 141.03 m² 1518.0 ft²
Disc Loading:  
Solidity: 0.0652
Main Rotor Blade Derived Characteristics
Blade area per blade: 4.59 m² 49.5 ft²
Tip Speed: 227.33 m/s 745.8 fps

Primary Control Device

Data on primary control devices such as tail rotors

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):  

Related VFS Resources

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Related Public Resources

Resources related to the AH-1P Cobra, provided by public sources across the internet.

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