Item 1624

OTHER: Helicopter - Inside - Side-by-Side - Electrotor- MicroLite

Drawing: The gearing will be crown and pinion, quite similar to the lntermeshing and Interleaving configurations. See 1841

Bill of Material

Musings on a MicroLite VTOL: Side-by-side, Interleaving, Intermeshing, Coaxial

The Interleaving will be similar to the Side-by-Side and/or the Intermeshing. I.E. w/ or w/o roll control linkage.

Basically a side-by-side the same as Franz Schoeffman's coaxial.

Drawing:

 

General Notes:

Gas or Electric

If electric, then 2 only Plettenberg - Predator 37 could go over the pilot's head (with their axis of rotations pointing fore & aft) and a 3rd one could be added with a vertical axis if needed.

Propeller:

http://www.ultralightnews.ca/articles/ultralightpropeller_comparison.htm

Safety:

xx

Rotor Disk and Power Specifications:

Landing Gear:

Transportability:

Weight and Balance:

Was SynchroLite I ~ REPORT: Weight and Balance. Being modified for this craft

--------

Item:

Full Name:

Wt. Ea.

Qty

X

Y

Z

Wt. * X

0451

Control - Flight - Assembly - Final

14.0

1

-12.0

0.0

10.0

-168.0

0581

Control - Power Train - Assembly - Final

8.0

1

7.0

0.0

15.0

56.0

0515

Electrical - Assembly - Final

10.0

1

0.0

0.0

0.0

0.0

1520?

Motor - Assembly - Final

4.2

2

0.0

x.0

xx.0

xx.0

0523

Reducer - Assembly - Final

19.8

2

0.0

0.0

x.0

x.0

0583

Equipment - Assembly - Final

1.0

1

-12.0

0.0

20.0

-12.0

0500

Fuselage - Assembly - Final

25.0

1

0.0

0.0

9.6

0.0

0375

Instrument - Assembly - Final

3.0

1

-34.0

0.0

12.0

-102.0

0521

Landing Gear - Rear - Composite Legs

3.0

2

13.0

0.0

-6.0

78.0

0692

Rotor - Assembly - Final - VR-7b - 5.25"

38.0

2

0.0

0.0

60.0

76.0

Net Weight:

202.0

0389

Weight & Balance - Batteries (1)

xx.0

x

x.0

x.0

x.0

x.0

0265

Weight & Balance - Load - Pilot

230.0

1

-12.0

0.0

14.0

-2013.0

Payload:

xx.0

-xx.0

Total Weight:

xx.0

Total Moment:

-xx.0

CofG from masts:

-x.xx

(1) xxx.

Dimensions are in inches and weights are in pounds.

Total weight is item quantity times item weight

Ultralight Category:

The weight of this craft should be below 254 lbs. In addition, with the use of independent speed control on each motor, and gyrocopter cyclic control this rotorcraft may become nearly as simple and as safer as a gyrocopter. Since the gyrocopter is excepted into Sport Plane/Pilot then there is no reason why a larger version of this helicopter cannot be eventually accepted.

 

Unmanned Air Vehicle (UAV):

Thoughts:

Potential Concerns:

Gyrocopter Fuselage Plans:

Plans for the Gyrobee gyrocopter less head and blades

Plans for a Hornet gyrocopter less head and blades.

Additional Information:

Related craft: Electric UniCopter and OTHER: Helicopter - Inside - Side-by-Side - UltraLite & UAV

OTHER: Aerodynamic - Rotor Disk - Dual Configuration - Side-by-Side

OTHER: Helicopter - Inside - Side-by-Side - Electric Ultralight & UAV

Hi Cita,

Thanks for the reply. my post was just some un-thought-out thoughts related to an ultra-lightweight VTOL that might be cheap, simple and safe, while also expanding the boundaries of the flight envelope.

Quote:

"Perhaps that in a "worst case" scenario,stumbling at landing,the side-by-side concept could be a little more "tricky" than a co-axial.".

Agreed.
For the fun of it, I am now playing with the possibility of an Interleaving, an Intermeshing, or a Coaxial with very unequal diameter rotors (with special blades).

A quick question. You mention;

Quote:

"... my machine has rotor tilt for control instead of weight-shift. A universal joint between the frame and the rotorhead provides this."

It would appear that they are both the same, except that you are subtracting the weight of the frame etc. from the rotorhead (above the U-joint) and adding it to the weight of the pilot (below the U-joint). Do you feel that this will be better because it puts more authority into the 'control'?

Dave

Work Sheet on MicroLite S

MicroLite_S.html

Reason for Considering Side by Side:

 

 Propeller:

Schoeffmann's rotor radius may be 51.3" = 8.55 ft. This will be a disk area of 57.4 sq-ft.

IVO:

 Gears:

Go with 3 planetary gears and the motor can be directly coupled to the sun gear. In other words; no flexible coupling, pulse saves weight and space.

 Bearings:

DESIGN: Electrotor-MicroLite - Power Train - Bearing - Rotor & Gear

For rotor bearing us the The Gyrobee's only Main Rotor Bearing is: #5206. Torrington Catalog, Fafner Ball Bearings, page 43. It is a double row angular contact ball bearing and the angle is 30. Its weight is 0.65 lbs. The static load rating is 5,200 lbs and the dynamic load rating is 8,650 lbs. A supplier and specs; http://www.skatebearings.com/5206-2RS-5206-ZZ.htm. Or increase size because of rigidity of MicroLite's rotor

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Latest revision; November 16, 2009