B435

OTHER: Mechanics - General

Most general information on mechanical will be found interwoven with specific information on this project at: Rotor and Power Train.

Topics:

		Topic:		Location:
		Selecting a Transmission		this page
		Technical Reports by Others		this page
		Lubrication:		1203
		O-ring		this page
		Retaining Ring		this page
		Spring-Weight-Damper System		1347
		Hardware (Attachment Stock)		1388
		Related pages:
		OTHER: Flight Dynamic ~ General - Precession - Gyroscopic & Aerodynamic		0940
		OTHER: Flight Dynamics - General - Power Loading		0939

Notes:

There is a booklet called 'Mechanical Design and Description - Rotary Wing Aircraft Handbooks And History - Vol. 8'; dated 1954. It consists of 273 pages of information on the mechanical design and mechanical description of early helicopters.

Selecting a Transmission:

These two tables can help with the selection of a suitable type of transmission with a constant transfer ratio.

Gears and Belts:

Martin Garrish;

"Consider the idea of not having the quantity of teeth in the belt a multiple of the teeth in the drive pulley. This way the engine is not at maximum torque at the same places in the belt all the time."

This is critical to ensure good belt life. Most gearboxes avoid integer ratios for precisely the same reason.

Technical Reports by Others:

A Preview of an Analytical Guide to Helicopter Transmission Design ~ Kaman ~ AGMA 109.29 ~ Have hard copy.

O-ring:

O-ring Design Guidelines; http://www.efunda.com/DesignStandards/oring/design_guidelines.cfm