The Kestrel Jet Helicopter
The Kestrel is a single-seat
ultralight helicopter powered by small jet engines mounted on the tips
of the rotorblades. This form of power eliminates the need for a tail rotor,
simplifying and reducing the cost of construction.
If ordered separately, the jet-helicopter
construction package is available for $23.95 (+$3 postage US, $7 foreign).
This package includes the Vortech Catalog.
this manual provides an overview of the construction of
the jet helicopter, showing frame construction and many details
regarding the integration of the control system, jets, fuel-flow
system, and rotorsystem. The manual provides a schematic view of
the rotorhead, but does not detail the construction of the
rotorhead, rotorhub, rotorblades or jets. Vortech sells a jet-helicopter
rotorhead and the jets, or these parts can be built from separate prints.
However, their construction is complex and requires machining..
Specifications of the Kestrel:
Length: 12'; height: 7'; empty wt:
180 lbs; gross wt: 440 lbs; payload (max) 260 lbs; engines (2): G8-2-20
jets; fuel: propane; fuel consump: 12+ gal/hr; rotor dia: 25'; speed (max):
95 mph (63 as ultralight); altitude (max): 12,500'.