Groen Brothers « Monsoon », a Hercules-based gyroplane

[hesham]

Hi,

is that a really design or not ?,and what is this ?.

 

[Antonio]

Hi Hesham,

It is a real but unbuilt design from Groen Brothers

http://www.groenbros.com/

 

[Kim Margosein]

What is with gyroplanes? It seems like such a no-brainer idea, but the projects and the companies that promote them seem to dry up and blow away. What is the inherant flaw?

 

[Vahe Demirjian]

I saw an artist's conception of a Groen design for a military gyroplane transport based on the Hercules in an edition of Janes All-the-World's Aircraft.

 

[SpudmanWP]

Speed is the biggest drawback

 

[taildragger]

What is with gyroplanes? It seems like such a no-brainer idea, but the projects and the companies that promote them seem to dry up and blow away. What is the inherant flaw?

Their inherent limitation is their inability to maintain a sustained hover because the rotor system is, in a pure autogyro, unpowered. VTOL takeoffs and landings are conducted with the rotor driven by inertia and constantly slowing so these operations must be completed very precisely. Mechanisms to drive the rotor were introduced but the result starts to get as complex as a helicopter and so erodes the type's main virtue: mechanical simplicity. They seem to have an advantage over fixed wing aircraft in STOL operations but introduce the complexity and speed limitations of a rotor.