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Lear Jet Industries Gates Twinjet helicopter

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Specifications Comment this helicopter
Picture Gates_Twinjet
General
Manufacturer Lear Jet Industries
Type Gates Twinjet
Introduced 1/1/1969
In production? No
Units produced 0
Price US $ 400,000.00
Dimensions
Overall Length 0 ft
Length 42 ft
Height 12.3 ft
Width 0 ft
   
   
Description

The Gates Twinjet helicopter was a planned luxury private helicopter designed and manufactured by the Lear Jet Corporation.

The Lear Jet Corporation is notable for being the first makers of helicopters built specifically to be luxury, privately-owned passenger helicopters. Before, helicopters that filled this market segment were converted from military or civilian utility helicopters.

The Twinjet was no different in this regard. This twin-turbine craft had seating meant for eight passengers and two crew in its corporate layout. There was also the option of a high-density layout, which could accommodate a pilot and 12 passengers.

The Twinjet was to be powered by two Garret Air Search TSE 231-P2400 turboshaft engines. They had a peak takeoff output of 474 shaft horsepower each which could be sustained for 30 minutes, but the normal operating performance was 407 shaft horsepower. The engines were meant to be mounted in a novel blister at the top of the helicopter.

This was part of the overall design goal that aimed to maximize cabin space. The fuselage was also designed to be very aerodynamic.

Things were looking good for the Twinjet and it was featured in several articles, but the recession of 1970 put a permanent end to the project, despite the fact that master tooling and major production facilities were near completion. In the end this helicopter never existed as more than on-paper designs, artist’s impressions and a few wooden mockups.

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Design features
  • Transverse mounting of the engines in the stub wings
  • Aerodynamic fuselage
Description

The Gates Twinjet helicopter was a planned luxury private helicopter designed and manufactured by the Lear Jet Corporation.

The Lear Jet Corporation is notable for being the first makers of helicopters built specifically to be luxury, privately-owned passenger helicopters. Before, helicopters that filled this market segment were converted from military or civilian utility helicopters.

The Twinjet was no different in this regard. This twin-turbine craft had seating meant for eight passengers and two crew in its corporate layout. There was also the option of a high-density layout, which could accommodate a pilot and 12 passengers.

The Twinjet was to be powered by two Garret Air Search TSE 231-P2400 turboshaft engines. They had a peak takeoff output of 474 shaft horsepower each which could be sustained for 30 minutes, but the normal operating performance was 407 shaft horsepower. The engines were meant to be mounted in a novel blister at the top of the helicopter.

This was part of the overall design goal that aimed to maximize cabin space. The fuselage was also designed to be very aerodynamic.

Things were looking good for the Twinjet and it was featured in several articles, but the recession of 1970 put a permanent end to the project, despite the fact that master tooling and major production facilities were near completion. In the end this helicopter never existed as more than on-paper designs, artist’s impressions and a few wooden mockups.

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Design features:
  • Transverse mounting of the engines in the stub wings
  • Aerodynamic fuselage
Performance
Persons 10
Max. Range 400 mi
Cruise Speed 180 mph
Max. Speed 0 mph
Max. rate of Climb 0 ft/min
HOGE ceiling 0 ft
Service Ceiling 0 ft
Gross Weight 6000 lb
Empty Weigt 3600 lb
Useful Load 2400 lb
Dynamic system
Fuel Capacity 0 gallons
Number of Engines 2
Engine Type Turbine
Engine Code Garrett A1 Research TSE231-P2400
Horse Power 474
Rotorhead
Number of rotorblades 4
Rotor Diameter 49 ft
Number of tail rotorblades 2
Tailrotor Diameter 6.8 ft
Blueprints & model
Manufacturer Website manufacturer..
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1 Comments

ItemInfoText
1  Benn Saacman

Friday, July 17, 2015 10:10 PM



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