Item 1077
DESIGN: UniCopter ~
Fuselage - Body - Adjustable Seat
Objectives:
To provide a seat that accommodates changes in the pitch of the craft between hover and fast forward flight.
To provide a seat that accommodates different pilot heights and weights.

Drawing Related to Pitch Change:

Currently, the drawing does not consider height and weight changes.

1. Pitch Change Notes:
Design to accommodate a 10º range of adjustment in the torso.
The pivot locations are roughed in. The one at the foot should probably be further aft.
The seat change will cause a rotation at the ankle joint, but it can be minimized and in fast forward flight, there will be a minimal need for pedal travel, particularly because of the craft's lateral symmetry.
Later Note; ~ The inclusion of the pusher prop will reduce the fuselage's range of pitch between hover and fast forward flight.

2.
Height & Weight Change Notes:
Shorter pilots normally weigh less, there for it may be advantageous to leave the pedals alone and move the seat (pilot's mass) forward and aft.
It initially looks like if the top of the foot-to-front-of-seat arm is moved 1/3 to 1/2 way back on the seat (see hinge point on mockup seat) then the above pitch change will still work plus raising the top of the seat will move the front of the seat down. For shorter pilots, this will shorten the knee to foot distance and raise the head.
A possible alternative is to not move the seat. Just have a seat cushion that is 3" deep at the front and 5" deep at the back. For taller pilots, flip the front and the back. Rotation of the pedals about the Y-axis might have to be also considered.

Introduction Page | SynchroLite Home Page | UniCopter Home Page
Last Revised: September 11, 2007