Vertipedia - Bensen Model B-9 Little Zipster

The helicopter has tilting head control and foot pedals for changing direction.

Overview

Data on design, manufacture and status

Design authority: Bensen Aircraft Corp.

Primary manufacturer: Bensen Aircraft Corp.

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift devices: 2 in Coaxial configuration

Crew required: 1 in Single seater 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:	6.10 m	20.0 ft
Overall Width:	6.10 m	20.0 ft

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:

Cruise Speed: 97 km/h

Weights
Max Gross Weight (ground):	318 kg	701 lb
Max Gross Weight (airborne):
Max Take-off Weight:	318 kg	701 lb
Empty Weight:

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:	161 km	87 nm
Max Endurance:

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

Powerplant
Number of engines:	1
Designation:	Mercury Designation TBA (60 hp) reciprocating
Manufacturer:	Mercury

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

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

Main Rotor Characteristics
Diameter:	6.10 m	20.00 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:	2

Main Rotor Derived Characteristics
Disc Area:	29.19 m²	314.2 ft²
Disc Loading:	5.45 kg/m²	1.116 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

Helicopters from "A to Z" | Part I

Ralph P. Alex
AHS Newsletter, 1961, October, 1961 (page 10)
Periodical

Related VFS Resources

Resources related to the Model B-9 Little Zipster, provided by the Vertical Flight Society.

Forum Proceedings

Vertiflite articles

Enter a search term in the box above.

Web files from vtol.org

Enter a search term in the box above.

Webpages from vtol.org

Enter a search term in the box above.

Images from the VFS Gallery

Enter a search term in the box above.

Refine / filter your search or find more resources

Related Public Resources

Resources related to the Model B-9 Little Zipster, provided by public sources across the internet.

Publicly-funded resources provided by the US Government

Search at NASA Technical Reports Server (NTRS).

Search at Defense Technical Information Center (DTIC).

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:	1 Reciprocating
Max Level Flight Speed:
Max Range:	161 km	87 nm
Max Endurance:

Main Rotor Diameter:	6.10 m	20.00 ft
Max Gross Weight (ground):	318 kg	701 lb