Vertipedia - Hiller Model 1031-A-1

Flying platform. A development of the Model 1031 with an increased duct diameter and revised landing gear configuration. The increased duct diameter also enabled a higher gross weight.

Source: “Flying Platforms and the Many Novel Aircraft Configurations Investigated by Charles Zimmerman”, Robert Scott, Paper presented at AHS 69th Annual Forum, Phoenix, Arizona, May 21-23, 2013

Overview

Data on design, manufacture and status

Design authority: Hiller Aircraft Corporation

Primary manufacturer: Hiller Aircraft Corporation

Parent type: Hiller VZ-1 Pawnee

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift devices: 2 in Coaxial configuration

Crew required: 1 in Other 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

Overall Dimensions
Overall Height:
Overall Length:
Overall Width:

Airframe Dimensions
Airframe Length:
Airframe Width:
Airframe Height:

Landing Gear Dimensions
Landing Gear Base:
Landing Gear Track:

Cabin Dimensions
Cabin Internal Height:
Cabin Internal Length:
Cabin Internal Width:

Weights
Max Gross Weight (ground):	252 kg	555 lb
Max Gross Weight (airborne):
Max Take-off Weight:	252 kg	555 lb
Empty Weight:	168 kg	370 lb

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:

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

Powerplant
Number of engines:	2

Normal Ratings
Max continuous:
Take-off / rated:
Intermediate:
Maximum:

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

Propellers mounted in a duct

Main Rotor Characteristics
Diameter:	1.52 m	5.00 ft
RPM:
Direction of Rotation:	Counter-rotating
Hub Type:

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

Main Rotor Derived Characteristics
Disc Area:	1.82 m²	19.6 ft²
Disc Loading:	68.99 kg/m²	14.131 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):

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Number of engines:	2 Unknowns
Max Level Flight Speed:
Max Range:
Max Endurance:

Main Rotor Diameter:	1.52 m	5.00 ft
Max Gross Weight (ground):	252 kg	555 lb