TAA Tech Info DHC-2 Beaver Flashcards
Ailerons
Droop with flaps. No in-cockpit trim control
Flaps
Slotted, hydraulically pumped up/down
Elevator and Rudder
Conventional with trim tabs
Fuel Tank/s
Capacity
TIP TANKS 80lt ea NO GAUGE fed via TRANSFER VALVE to front tank ONLY
FRONT 132lt
CENTRE 128lt
REAR 80lt
500lt or 340lt + 160lt tip tanks
Wobble Pump
Manually increases fuel pressure for start or emergency, raising it to 5psi.
Engine
Pratt & Whitney "Wasp Junior SB" (higher compression ratio) R985 (985 Cu Inch / 16lt approx displacement Air Cooled (no cowls or shutters) 9-cylinder Supercharged Radial Piston Engine
Rated
400 bhp (METO) at 5000' 450 bhp at takeoff power
Propeller
It drives a Hartzell 3 Blade constant speed propeller
Vne
Never Exceed Speed
157kts
Vno
Normal Operating Speed
126kts
Va
Manoeuvre Speed
109kts
Vx
Max Angle of Climb Speed
70kts
Vy
Max Rate of Climb Speed
83kts
Vfe
Max Flap Extension Speed
91kts
Vs0
Stall Speed, Landing Flap
39kts
Vs1
Stall Seed, Flaps Up
52kts
Vmax x/w
Max Crosswind
9kts
Vglide
Best Glide Speed, Clean or Cruise Flap
80kts
G Limits
+ 3.5
- 1.5
SuperCharger
Centrifugal forces via impeller compress air prior to entry into piston canister. This higher air density improves performance. Beware overboost at sea level/low altitude watch MAP.
SUPERCHARGER
therefore open throttle gradually to avoid OVERBOOST.
5seconds taxi to takeoff, allows excess MAPs therefore manually limit to 36.5” OR cylinder damage. OBSERVE LIMIT. EVEN IN AN EMERGENCY NEVER STRAIGHT BALLS TO THE WALL. 1” per 30seconds.
Engine Cooling
AIR-COOLED NO COWLS/SHUTTERS
to control therefore manage CHT with power. Beware shock or excessive cooling. Metered descent
Crankshaft and Prop direction
Clockwise
Supercharger Type
Engine-driven single-stage centrifugal type