Nelson Aircraft

Last updated

Nelson Aircraft Corporation
Industry Aerospace
Founded1945
Headquarters San Fernando, California, United States
Key people
Ted Nelson
William Hawley Bowlus
Products Motor gliders
Aero engines

The Nelson Aircraft Corporation was founded in 1945 by sailplane pilot Ted Nelson and sailplane designer William Hawley Bowlus in San Fernando, California. [1]

Contents

Bowlus and Nelson formed the Nelson Aircraft Corporation to build a two-seat, motor glider version of the popular Bowlus BA-100 Baby Albatross. The designers nicknamed this design the Bumblebee but they sold the powered glider under the official moniker, Dragonfly. [2]

Designs

Nelson Hummingbird PG-185B Nelson Hummingbird PG-185B - Hiller Aviation Museum - San Carlos, California.jpg
Nelson Hummingbird PG-185B
BB-1 Dragonfly Nelson BB1 Dragonfly in storage.jpg
BB-1 Dragonfly

The first Nelson-Bowlus glider was the Nelson Bumblebee with a pod-and-boom fuselage two-seat powered sailplane [NX1955]. The Bumblebee in 1945-46 was built with a Righter O-45 16-hp four-cylinder engine. [2] The prototype Bumblebee had a fully retractable tricycle landing gear, operated manually by the pilot. The nose gear was steerable with miniature shimmy dampeners and a lock. The rear wheels had a special cam action so that they could be tucked away in the fuselage at the proper angle. The rear wheels also had independent internally expanding brakes, designed by Bowlus, which facilitated taxiing on the ground. [3] The high pitch sound of the engine caused Bowlus and Nelson to name it the "Bumblebee." A three-gallon gas tank fed the pusher type engine allowing it to fly for an hour and a half under full throttle, cruising at 75 mph. Tests were made which determined the engine was under-powered, producing about 16 horsepower at 3500 rpm, not enough for adequate flight, although Bowlus claimed it would climb 300 feet per minute to an altitude suitable for soaring. The men decided to build a suitable engine of their own design from scratch that was used for the later production models. Their new motor generated 25 horsepower, just enough power for takeoff and a slow climb. [2]

Nelson Aircraft then developed their own 25-28 hp four-cylinder, two-stroke H-44 and H-49 engines. These engines were used for a limited production version of the BB-1 Bumblebee called the BB-1 Dragonfly. [1]

The experimental Nelson Bumblebee was a strut-braced, high wing, Bowlus Baby Albatross glider design which was altered by widening the cockpit and adding a plexiglass bubble to improve visibility. The Nelson Dragonfly version added vertical stabilizers mounted on the ends of the horizontal stabilizer. The motorglider had side-by-side seating with flight controls for each occupant. [3]

Aircraft

Summary of aircraft built by Nelson Aircraft
Model nameFirst flightNumber builtType
Nelson Bumblebee 19461 Motor glider
Nelson Dragonfly 19477Motor glider
Nelson Hummingbird 19537Motor glider

Engines

Summary of engines built by Nelson Aircraft
Model nameIntroducedType
Nelson H-44 19454-cylinder, 2-stroke, 25 hp at 3,900 rpm [4]
Nelson H-49 19494-cylinder, 2-stroke, 28 hp at 4,000 rpm [4]
Nelson H-59 19534-cylinder; 2-stroke, 40 hp at 4,000 rpm [5]
Nelson H-63 19584-cylinder; 2-stroke; 43 hp at 4,000 rpm [6]

Related Research Articles

Fixed-wing aircraft Heavier-than-air aircraft with fixed wings generating aerodynamic lift in the airflow caused by forward airspeed

A fixed-wing aircraft is a heavier-than-air flying machine, such as an airplane, which is capable of flight using wings that generate lift caused by the aircraft's forward airspeed and the shape of the wings. Fixed-wing aircraft are distinct from rotary-wing aircraft, and ornithopters. The wings of a fixed-wing aircraft are not necessarily rigid; kites, hang gliders, variable-sweep wing aircraft and airplanes that use wing morphing are all examples of fixed-wing aircraft.

A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flight without thrust from the means of propulsion. In the US, a powered glider may be certificated for up to two occupants, up to 850 kg maximum weight, and with a maximum ratio of weight to wing span squared of 3 kg/m2. Similar requirements exist in European JAA/EASA regulations, at a maximum weight of 750 kg.

Aériane Swift

The Aériane Swift is a lightweight (48 kg) foot-launched tailless sailplane whose rigid wings have a span of 40 feet. The Swift has been succeeded by the "Swift'Lite".

Richard E. Schreder was an American naval aviator and sailplane developer, responsible for design and development of the HP/RS-series kit sailplanes marketed from 1962 until about 1982. Schreder also founded and ran Airmate, a successful drafting supplies company.

National Soaring Museum Aviation Museum in Elmira , New York

The National Soaring Museum (NSM) is an aviation museum whose stated aim is to preserve the history of motorless flight. It is located on top of Harris Hill near Elmira, New York, United States.

Bennett BTC-1

The Bennett Aircraft Corporation Bi-motored Transport Commercial Number One (BTC-1) Executive was a 1930s American eight-seat light transport aircraft built by the Bennett Aircraft Corporation. In the ten-year span of its known life, the Bennett BTC-1 was identified in print by four different names: the Bennett, the Breese Bennett, the Bowlus Bennett and the Globe BTC-1.

Schneider Grunau Baby

The Schneider Grunau Baby was a single-seat sailplane first built in Germany in 1931, with some 6,000 examples constructed in some 20 countries. It was relatively easy to build from plans, it flew well, and the aircraft was strong enough to handle mild aerobatics and the occasional hard landing. When the Baby first appeared, it was accepted wisdom that the pilot should feel as much unimpeded airflow as possible, to better sense rising and falling currents of air and temperature changes etc.

Schweizer SGM 2-37 US touring motor glider, 1982

The Schweizer SGM 2–37 is a two-place, side-by-side, fixed gear, low wing motor glider.

Glider (sailplane)

A glider or sailplane is a type of glider aircraft used in the leisure activity and sport of gliding. This unpowered aircraft can use naturally occurring currents of rising air in the atmosphere to gain altitude. Sailplanes are aerodynamically streamlined and so can fly a significant distance forward for a small decrease in altitude.

Bailey-Moyes Dragonfly

The Bailey-Moyes Dragonfly is an Australian-American two-seats-in-tandem, high-wing, strut-braced, open cockpit, conventional landing gear-equipped ultralight aircraft. The aircraft has been in production since 1990 and was designed as a special-purpose tug for hang gliders and ultralight sailplanes. It is available as a complete aircraft or as a kit for amateur construction. The aircraft has been variously produced by Moyes Microlights, Bailey-Moyes Microlights and currently LiteFlite of Botany, New South Wales, all different iterations of the same company.

Bowlus BA-100 Baby Albatross

The Bowlus BA-100 Baby Albatross is an American high-wing, strut-braced, open cockpit, pod-and-boom glider that was designed by Hawley Bowlus and introduced in 1938.

Bowlus BS-100 Super Albatross

The Bowlus BS-100 Super Albatross is a single seat, mid-wing glider that was designed by Hawley Bowlus in 1938.

Nelson Dragonfly

The Bowlus/Nelson BB-1 Dragonfly is an American, two seat, strut-braced, high-wing motor glider that was developed from the Bowlus BA-100 Baby Albatross glider by Hawley Bowlus.

The Nelson H-44 is an American single ignition, four-cylinder, horizontally opposed, direct drive, two-stroke aircraft engine that was developed by the Nelson Engine Company for use in motorgliders.

Nelson Hummingbird PG-185B

The Nelson Hummingbird PG-185B is an American, tandem two seat, mid-wing motor glider that was developed by Nelson Aircraft after discontinuing the Nelson Dragonfly.

Schreder Airmate HP-11

The Schreder Airmate HP-11 is an American mid-wing, V-tailed, single seat glider designed by Richard Schreder. Airmate was the name of Schreder's design company.

The Maupin Windrose is an American high-wing, single-seat glider and motor glider that was designed by Jim Maupin for the Sailplane Homebuilders Association Design Contest.

The TeST TST-14 Bonus is a Czech high-wing, T-tailed, two-seats-in-tandem glider and motor glider, designed and produced by TeST Gliders.

The Barel Graal is a French mid-wing, T-tailed single-seat motor glider that was designed by Max Barel and produced by Graal Aéro as a complete ready-to-fly aircraft or as a kit for amateur construction.

Daimler L15

The Daimler L15, sometimes later known as the Daimler-Klemm L15 or the Klemm-Daimler L15 was an early two-seat low-powered light aircraft intended to popularise flying. In mid-career it flew as a glider.

References

  1. 1 2 Aeroengine: Nelson Aircraft
  2. 1 2 3 NASM Nelson BB-1 Dragonfly (Long Description)
  3. 1 2 "California Bumblebee," Talon Quarterly published by the 17th Airborne Assn, Winter 1946.
  4. 1 2 Federal Aviation Administration (April 1947). "Aircraft Type Certificate Data Sheet GTC19" (PDF). Retrieved 10 March 2011.CS1 maint: discouraged parameter (link)
  5. Popular Rotocraft Association: Igor Bensen
  6. Federal Aviation Administration (February 1996). "Aircraft Type Certificate Data Sheet 4E1" (PDF). Retrieved 13 March 2011.CS1 maint: discouraged parameter (link)