BrianW
Well-Known Member
You could learn a thing or two by looking at that old plain-jane workhorse - the Cessna 150.
1) Stall warning. cut a vertical slot in the wing leading edge. Blank it with a curved cover which is adjustable in height and leads to a pipe to the cockpit end which is fitted with a pipe organ reed that sounds when sucked. Adjust the slot so it sounds 2 or 3 mph above stall AoA
2) Parking brake. arrange a hinged flap secured to structure at the hinge line through which the brake master cylinder rod passes. Arrange a spring on the flap so the rod can move through the hole freely.
Arrange a bowden wire cable to pull against the spring & flap when a cockpit control is pulled.
Push the brake pedal; pull the brake knob; release the pedal; release the control. The rod now wishes to extend, but is jammed by the brake flap.
Both of these devices weigh next to nothing, and keep working for 50+ years. You could not design something more efficient AND lighter, in your dreams.
1) Stall warning. cut a vertical slot in the wing leading edge. Blank it with a curved cover which is adjustable in height and leads to a pipe to the cockpit end which is fitted with a pipe organ reed that sounds when sucked. Adjust the slot so it sounds 2 or 3 mph above stall AoA
2) Parking brake. arrange a hinged flap secured to structure at the hinge line through which the brake master cylinder rod passes. Arrange a spring on the flap so the rod can move through the hole freely.
Arrange a bowden wire cable to pull against the spring & flap when a cockpit control is pulled.
Push the brake pedal; pull the brake knob; release the pedal; release the control. The rod now wishes to extend, but is jammed by the brake flap.
Both of these devices weigh next to nothing, and keep working for 50+ years. You could not design something more efficient AND lighter, in your dreams.