Brantly B-1 | |
---|---|
Role | light coaxial-rotor helicopter |
Manufacturer | Brantly Helicopter Corporation |
Designer | Newby O. Brantly |
First flight | 1946 |
Status | abandoned |
The Brantly B-1 was a 2-seat, coaxial-rotor helicopter designed by Newby O. Brantly and constructed by the Pennsylvania Elastic Company, Brantly's employer.
In 1946, Brantly started flight testing the B-1 prototype (NX69125), which used a 150 hp Franklin O-335 engine in the fabric fuselage and two three-bladed rotors that rotated at 320 rpm and were fitted coaxially. The collective, cyclic, and differential controls were enclosed in the rotor hubs and ran in an oil-bath. Each rotor blade weighed 5.5 kilos. It also had a fixed wheel undercarriage with a tailwheel under the tailfin. [1]
Unfortunately, the design was too heavy and complex and was abandoned.
Data from [2]
General characteristics
Performance
The Kamov Ka-26 is a Soviet light utility helicopter with co-axial rotors.
The Hiller OH-23 Raven is a three-place, military light observation helicopter based on the Hiller Model 360. The Model 360 was designated by the company as the UH-12, which was first flown in 1948.
The Brantly B-2 is an American two-seat light helicopter produced by the Brantly Helicopter Corporation.
The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation. It was evaluated by the United States Army as the YH-30 and the United States Navy as the XHUM-1.
The Gyrodyne RON Rotorcycle was a tiny, single-seat helicopter designed under contract for the United States Navy. in the mid-1950s. It later was redesigned for a U.S. Marine Corps requirement for a small personal helicopter that would fulfill a number of roles, including observation, liaison, small unit tactical maneuvers, and which could be dropped to downed airmen behind enemy lines to facilitate their escape.
The Yakovlev EG, also commonly known as the Yak-M11FR-1 and Sh (Shootka), was an experimental aircraft with coaxial rotors. The prototype was first flown by V.V. Tezavrovsky in December 1947.
The Bensen B-9 Little Zipster was a small helicopter developed by Igor Bensen in the United States in the 1950s and marketed for home building. Similar in general configuration to Bensen's previous rotor kite and autogyro designs, it consisted of an open aluminum framework but substituted the autorotating main rotor for a coaxial, counter-rotating system of two, two-bladed rotors. A large tailfin provided directional stability, and the aircraft was controlled by a handlebar system extending over the pilot's head to the rotor hub.
The Omega BS-12 was a utility helicopter with high ground clearance designed to carry loads behind the cabin at, or near, the center of gravity.
The Dynali H2S is a Belgian helicopter, designed by Jacky Tonet and produced by Dynali of the Thines district of Nivelles. When it was available the aircraft was supplied as a kit for amateur construction or fully assembled, supplied ready-to-fly.
BUAA unmanned helicopters are Chinese UAVs developed by Beihang University (BUAA), some of which have entered service with the Chinese military and government establishments.
The Eagle's Perch was an American helicopter that was designed by the Nolan brothers and produced by Eagle's Perch Inc. of Carrollton, Virginia. Now out of production, when it was available the aircraft was supplied as a kit for amateur construction.
The Bréguet G.111 or alternatively, G.11E was a French passenger coaxial rotors helicopter flown soon after World War II. Only one was built, development ceasing when funding ran out.
The Niki Lightning is a fully enclosed two-seater tricycle autogyro of composite construction, designed and built by Niki Rotor Aviation in Bulgaria. It was introduced in 2009
The Sikorsky S-50 was a smaller lighter version of the Sikorsky R-6 designed for the United States Army Air Corps as an observation helicopter with dual controls in 1943. The design emphasized minimal weight and was to be powered by a 150 hp (112 kW) Franklin 6ACV-298 engine turning a three blade main rotor constructed of metal and plywood covered by 2 layers of fabric. The tail rotor also had three blades made from laminated wood. Further weight savings of the design included the rejection of a conventional oleo strut tail wheel in favor of a tail skid on a pivot cushioned by three rubber doughnuts. One full scale wooden mock-up was built but no flying examples were ever produced.
The Arrow Coax Livella Uno is a German helicopter under development by Arrow Coax Ultra Light Helicopter of Hornhausen and introduced at the AERO Friedrichshafen airshow in 2015. The aircraft is intended to be supplied as a kit for amateur construction.
The EDM Aerotec CoAX 2D/2R is a series of German coaxial main rotor helicopters designed and produced by EDM Aerotec of Geisleden. The aircraft is supplied complete and ready-to-fly.
The IRI T22B is an Italian helicopter that was designed and produced by Italian Rotors Industries of Aprilia, Lazio. Now out of production, when it was available the aircraft was supplied complete and ready-to-fly.
The Rotorschmiede VA115 is a German helicopter, designed and produced by Rotorschmiede GmbH of Munich, introduced at the AERO Friedrichshafen airshow in 2015. The aircraft is supplied complete and ready-to-fly.
The Winner B150 is a Belgian helicopter that was designed and produced by Winner SBS of Dinant. Now out of production, when it was available the aircraft was supplied complete and ready-to-fly-aircraft or as a kit for amateur construction.
The Hiller XH-44 Hiller-Copter is an American experimental helicopter designed by Stanley Hiller.