About
For over 70 years attempts have been made to design an aircraft able to fly horizontally as well as take off and land vertically.
The most prominent among these is the Bell XV-3, an early example of the Tilt Rotor concept. The V-22 Osprey has evolved from this design.
Other examples using a tilt-wing design are the CL-84 and XC-142. Hawker-Siddley proposed a VTOL/STOL jet airliner the HS-141using fan lift engines. Of these only the V-22 has achieved production status.
Design attempts can be classified generally under two categories (i) alter a regular aircraft to emulate a helicopter by endowing it with VTOL capability. The examples mentioned above belong to this category.
Design Features
- Aircraft Mode
- VTOL/STOL Mode
A larger payload can be lifted using the short take off facility. When landing in STOL mode, the propeller arrangement facilitates air braking by reversing the pitch of the propellers.
A patent has been issued (USPTO #8857755) and published (US-2014-0061368-A1).
Utterfly is a novel VTOL/STOL aircraft.
It is designed to take off and land vertically. It is a 40-passenger commuter aircraft with a cruising speed of 400 knots and an operational range of 1000 NAUTICAL MILES.
It can be tailored to larger and smaller variations.
The name Utterfly is rooted in the word "utter" meaning "all" - such as an aircraft that flies in all directions. It also alludes to a butterfly because of its ability to hover.
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