The document discusses the UH-60 helicopter. It shows diagrams of the helicopter with its blades stored internally and extended for flight. When extended, the blades slide outward and their roots arch upward to provide clearance for the rotor disc. The document also discusses using short, wide inner blades to improve hover efficiency and producing lift through aerodynamic shape. Finally, it discusses the potential for a 100-150 passenger VTOL commuter aircraft with faster speeds than tilt-rotors and electric propulsion for silent VTOL operations.

1. Chuck Jarnot April 18, 2001
Air Mech Strike Study Group
jarnotc@riley.army.mil

2. Blade Roots Arch Upward Prior to Rotation
for Total Rotor Disc Clearance
Blade
Sliding
Covers
gR oot
s , Win
e Cockpit gine
UH-60 Siz Fue l, E n
& Cabin
c e Pod
- Servi
SP) Mu lt i
(M
Chuck Jarnot April 18, 2001
Air Mech Strike Study Group
jarnotc@riley.army.mil

3. Aerodynamic Shape
4 Blades slide outward from each Circular box
oot
, Wi ng R
es
ngin
e Cockpit Fue l, E
UH-60 Siz
e Pod
& Cabin
c
- Servi
SP) Mu lt i
(M
Chuck Jarnot April 18, 2001
Air Mech Strike Study Group
jarnotc@riley.army.mil

4. Short-Wide Inner
Blades Improve
Hover Efficiency
Figure 1 “Side View”
Aerodynamic Shape
Produces Lift
Figure 3
“Blades Extended”
Figure 2“Blades Stored” Chuck Jarnot April 18, 2001
Air Mech Strike Study Group
jarnotc@riley.army.mil

5. 10-15 Ton
Armored Vehicle
Chuck Jarnot April 18, 2001
Air Mech Strike Study Group
jarnotc@riley.army.mil

6. Piasecki
100-150 PAX VTOL Commuter-Plus FAA/NASA & DoD Joint Funding
Less Complex Than Tilt-Rotor Potential Solution to Crowded
Smoother Transition Dynamics Airports and Congested Airways
Faster Speeds of 450-500 Knots Makes Inner City Verti-Ports Possible
vice 250-300 Knot Tilt-Rotor with Cross Continental Flights,
LA to NY – Roof to Roof with Same
Turbine Electric For Silent Speed as Current B-737/MD-80
VTOL, a requirement for Urban
Chuck Jarnot April 18, 2001
Roof Top Operations & Eliminates Air Mech Strike Study Group
Inter-Connecting Drive Shafts jarnotc@riley.army.mil

7. Piasecki
100-150 PAX VTOL Commuter-Plus FAA/NASA & DoD Joint Funding
Less Complex Than Tilt-Rotor Potential Solution to Crowded
Smoother Transition Dynamics Airports and Congested Airways
Faster Speeds of 450-500 Knots Makes Inner City Verti-Ports Possible
vice 250-300 Knot Tilt-Rotor with Cross Continental Flights,
LA to NY – Roof to Roof with Same
Turbine Electric For Silent Speed as Current B-737/MD-80
VTOL, a requirement for Urban
Chuck Jarnot April 18, 2001
Roof Top Operations & Eliminates Air Mech Strike Study Group
Inter-Connecting Drive Shafts jarnotc@riley.army.mil