Month: October 2017

A rainy Sunday at CYPQ

Checking out if a National 490-C parachute will fit well in the front of the Citabria.

Unfortunately it positions the front pilot too close to the instrument panel.  The parachute should work ok for the rear pilot/passenger though.  Will check it out next flight opportunity.

Gave the engine a run and uncovered a problem with the fuel valve.  Better to find that one on the ground than in the air !  Further investigation and repair planned for tomorrow.

Not much happening today at CYPQ with Seneca College on strike and the poor weather.  The terminal was quiet enough to spend some time reading to learn more about hybrid rocket engine design.

 

Cozy Experimental Aircraft Update – October 28, 2017

Trial fit of triangular seat brace into position.  Seatback filed in area of fuel valve bracket to allow triangular brace to lay flush with seatback.

Trial fitting heat duct in position.  Sanded the opening in the seatback until a good fit was achieved.

Cut out a section of UND cloth into an isosceles trapezoid shape with a base of 24″, a height of 15″, and a top of 5″.  Used a marker to identify the trapezoid and 2″ width segments.  Placed wax paper under the cloth.

Workshop temperature was 25 deg C and the humidity was 57%.

58g resin and 22g hardner were mixed and epoxy applied to the UND cloth.

The hot air duct has a 7-ply UND reinforcement over the safety belt mounting hard point with ends tapered.  The 7 lengths were cutout using electric scissors and layed over top of each other into one long 24″ strip with tapered ends.

Micro was added to the epoxy and applied to the foam on the top side of the heat duct where the UND layup goes.  The layup was applied to the heat duct covering the aluminum tube.  Wax paper was placed over the centre of the layup and weights added to each side of the aluminum tube while the layup is curing.

 

Cozy Experimental Aircraft Update – October 20, 2017

The fuel valve was covered in saran wrap to avoid it being floxed in place since it needs to be removable.

The bracket was traced onto the triangular brace where the flox is applied.

Workshop temperature was 25 deg C and the humidity 56%.

15g resin, 6g hardner, and flox were mixed together.

The 3/8″ x 2″ aluminum tube was floxed into place.

Flox was applied to the triangular brace and the fuel valve and bracket assembly was placed in position for curing.