Transcendental Convertiplane Projects

[hesham]

Hi,

The Transcendental Model-3 convertiplane Project.

http://xplanes.free.fr/transcendental/trans-5.html

 

[Tailspin Turtle]

Thanks for posting - what's the source?

 

[Jemiba]

This artist impression is from an original Transcendental Aircraft corp. document,
I think. In vertiflite summer 2006 was a very comprehensive article about this
company, where it was shown, too, with an additional drawing of the aircraft
in forward flight.

 

[hesham]

From the same source;


the Model-2 convertiplane.

 

[fightingirish]

Transcendental Model 1-G Characteristics
Powerplant
Lycoming O-290-A
Brake horsepower . . . . . . . . . . . . . . . 160 HP @ 3000 RPM
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 ft
Wing
Span. . . . . . . . . . . . . . . . . . . . . . . . . . 21 ft
Area. . . . . . . . . . . . . . . . . . . . . . . . . . 63 sq ft
Chord. . . . . . . . . . . . . . . . . . . . . . . . . 3 ft
Loading . . . . . . . . . . . . . . . . . . . . . . . 27.7 lb/sq ft
Airfoil section . . . . . . . . . . . . . . . . . . NACA 23015
Width. . . . . . . . . . . . . . . . . . . . . . . . . 38 ft (to outer tip of rotor disc)
Height . . . . . . . . . . . . . . . . . . . . . . . . 7 ft
Rotor
No. of rotors . . . . . . . . . . . . . . . . . . . 2, interconnected
Type. . . . . . . . . . . . . . . . . . . . . . . . . . articulated
Blades/proprotor . . . . . . . . . . . . . . . . 3
Diameter . . . . . . . . . . . . . . . . . . . . . . 17 ft
Chord. . . . . . . . . . . . . . . . . . . . . . . . . 4 in
Disc loading . . . . . . . . . . . . . . . . . . . 3.6 lb/sq ft
Rotational speed
Helicopter mode . . . . . . . . . . . . . . . . 633 rpm
Weight
Empty . . . . . . . . . . . . . . . . . . . . . . . . 1450 lb
Gross . . . . . . . . . . . . . . . . . . . . . . . . . 1750 lb
No. of seats . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Transcendental Model 2 Characteristics
Powerplant
One Lycoming . . . . . . . . . . . . . . . . . O-435-23
Brake horsepower . . . . . . . . . . . . . . . 250 HP@ 3200 RPM
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ft 1 in
Wing
Span. . . . . . . . . . . . . . . . . . . . . . . . . . 22 ft 9 in
Area. . . . . . . . . . . . . . . . . . . . . . . . . . 100 sq ft
Airfoil section . . . . . . . . . . . . . . . . . . NACA 23015
Width. . . . . . . . . . . . . . . . . . . . . . . . . 39 ft (to outer tip of rotor disc)
Height . . . . . . . . . . . . . . . . . . . . . . . . 9 ft 5 in
Rotor
No. of rotors . . . . . . . . . . . . . . . . . . . 2, interconnected
Type. . . . . . . . . . . . . . . . . . . . . . . . . . articulated
Blades/proprotor . . . . . . . . . . . . . . . . 3
Diameter . . . . . . . . . . . . . . . . . . . . . . 18 ft
Chord (constant) . . . . . . . . . . . . . . . . 0.356 ft
Disc loading . . . . . . . . . . . . . . . . . . . 4.4 lb/sq ft
Weight
Empty . . . . . . . . . . . . . . . . . . . . . . . . 1579 lb
Gross . . . . . . . . . . . . . . . . . . . . . . . . . 2249 lb
Useful load . . . . . . . . . . . . . . . . . . . . 670 lb
No. of seats . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Source: The History of the XV-15 Tilt Rotor Research Aircraft: From Concept to Flight by Martin D. Maisel, July 1, 2001, ISBN: 1931641277

 

[RAP]

Model 1

 

[Cy-27]

A piece on the Trancendental 1-G Convertiplane from Air Pictorial (June 1955).

 

[Aeroweanie]

Robert Lichten, then an employee of Kellet Aircraft, was one of the founders of the Transcendental Company. He designed the Model 1-G with Mario Guerrieri, another former employee of Kellet. Lichten left in Transcendental 1948 and went to work for Bell Aircraft in Buffalo, transferring to the helicopter division in Texas in 1952. At BH, he and Ken Wernicke were the designers of the XV-3, which led to the XV-15, which led to the V-22, BA609 (now the AW609) and V-280. He was also responsible for the design of all initial development versions of the UH-1 and of the JetRanger helicopters at Bell. Lichten was killed in a car crash in 1971 and a American Helicopter Society award is given annually in his name.

 

[Platt-LePage Aircraft]

Robert Lichten, then an employee of Kellet Aircraft, was one of the founders of the Transcendental Company. He designed the Model 1-G with Mario Guerrieri, another former employee of Kellet. Lichten left in Transcendental 1948 and went to work for Bell Aircraft in Buffalo, transferring to the helicopter division in Texas in 1952. At BH, he and Ken Wernicke were the designers of the XV-3, which led to the XV-15, which led to the V-22, BA609 (now the AW609) and V-280. He was also responsible for the design of all initial development versions of the UH-1 and of the JetRanger helicopters at Bell. Lichten was killed in a car crash in 1971 and a American Helicopter Society award is given annually in his name.

Robert Lichten got his start at Platt-LePage Aircraft Co. working under Haviland Platt, on their Tilt-Rotor concepts.
Haviland Platt having patented his Tilt-Rotor ideas, would eventually receive a financial settlement from Bell during the XV-3 development, to avoid patent infringement "problems" due the primacy of Haviland Platt's patent, and his noted experience as an expert witness in patent cases.