The Heldeberg Convertible, also called the Blue Heron Convertible, is an American

powered parachute A powered parachute, often abbreviated PPC, and also called a motorized parachute or paraplane, is a type of aircraft that consists of a parafoil with a motor and wheels. The FAA defines a powered parachute as ''a powered aircraft a flexible o ...

, that was designed and produced by Heldeberg Designs of Altamont, New York.Cliche, Andre: ''Ultralight Aircraft Shopper's Guide'' 8th Edition, page D-8. Cybair Limited Publishing, 2001.

Design and development

The Convertible was designed to comply with the US

FAR 103 Ultralight Vehicles Ultralight aircraft in the United States are much smaller and lighter than ultralight aircraft as defined by all other countries. In the United States, ultralights are described as "ultralight vehicles" and not as aircraft. They are not req ...

rules for single seaters, including the category's maximum empty weight of . The aircraft has a standard empty weight of . It took its name from the design feature whereby it can be fitted with a second seat for instruction or passenger carrying. The model features a parachute-style

high-wing A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes. A monoplane has inherently the highest efficiency and lowest drag of any wing co ...

, single seat, or optionally two-seats-in-

tandem Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...

, accommodation,

tricycle landing gear Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle g ...

and a single

Rotax 503 The Rotax 503 is a , inline 2-cylinder, two-stroke aircraft engine, built by BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.Raisner, William: ''LEAF catlog'', pages 6-105. Leading Edge Airfoils, 1995. As of 2011 the Rot ...

engine in pusher configuration. The aircraft is built from a combination of bolted

aluminium Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...

and stainless steel tubing. It features a double ring propeller guard that has been roll-over tested. The fuel tank is made from aluminium. In flight steering is accomplished via foot pedals, or optionally a control stick, that actuate the canopy brakes, creating roll and yaw. On the ground the aircraft has lever-controlled nosewheel steering. The main landing gear incorporates gas strut suspension. The aircraft is factory supplied in the form of an assembly kit that requires 30–50 hours to complete. Originally marketed by the factory under their own name, the aircraft was later marketed under the brand name ''Blue Heron'', although the manufacturer remained the same.

Specifications (Blue Heron Convertible)

References

{{Heldeberg Designs aircraft 1990s United States ultralight aircraft Single-engined pusher aircraft Powered parachutes