PreCourse Package Flashcards
Type of glider we’re using
Schweizer 2-33A
Length
25 feet 9 inches
Span (wing span)
51 feet 0 inches
Height
9 feet 3.5 inches
Wing Area
219.48 square feet
Aspect ratio
11.85:1
Basic Weight (empty weight)
600 pounds
Maximum Gross Weight
1040 pounds
Ground movements- pushed by hand
5-6 people for efficient movement. One on each wing, one on tail, the rest on struts. Pushed backwards.
Ground movements- vehicle.
Towed forward with rope at least 30 ft long. Minimum of two people needed on glider. One on wings and second beside open window on release knob in case rope needs to quickly be released. When around other aircraft/hangers, person on both wings to ensure proper clearance.
Parking
Minimum clearance of 15 ft between wing tips of several gliders. Spoilers open, canopy closed. Tail generally closest to runway and one person remains at wing tip to ensure against wind gusts.
Tie downs
Three categories: permanent, temporary, flight line. Normally would just use permanent, in hanger.
Minimum length of tow rope
200 feet. We usually use 200-250 feet.
Rope used
5/16 diameter, hollow braided Dacron. Yellow with green tracer. Breaks at 2080 pounds, which is double or max operating weight.
Weak link
18 inches from glider tow hook. Where rope will break if subject to excessive force.
Launch Control Officer (LCO)
Responsible for safe operation of all glider activity on airfield, on ground, and in air. Bright yellow vest, normally at nose of glider.
Hook up person
Allows Pilot in Command to inspect rope, then hook up glider to rope. Vacates launch area by moving behind glider. Wears blue vest.
Wing Person
Positioned at into wind glider wing tip. Relays signals when directed.
Best Lift/Drag ratio
Speed at which glider will fly farthest distance while losing least amount of altitude
Minimum Sink Speed
Speed where glider will remain in air for longest time. Won’t travel as far a distance at best L/D ratio.
VNE (velocity never exceed)
Maximum allowable speed of glider
IAS
Indicated Airspeed
Best L/D dual/ Best L/D solo
50 mph/ 45 mph
Min sink dual/ min sink solo
42 mph (3.1 feet per second)/ 38 mph (2.6 feet per second)
VNE
98 mph
Max Air Tow
98 mph
Max auto/winch tow
69 mph
Normal air tow
65-70 mph
Maneuvering speed
65 mph
Stall speed
34 mph (solo)/ 38 mph (dual)
Stall speed (spoilers open)
36 mph (solo)/ 40 mph (dual)
Stall Speed (30 degrees bank)
36.5 mph (solo) / 41 mph (dual)
Forward Slipping (min speed)
50 mph (solo)/ 55 mph (dual)
Buffetting Speed
34-37 mph (solo)/ 39-42 mph (dual)
Spiralling Speed
39 mph (solo)/ 43 mph (dual)
Maximum Headwind
25 kts (28 mph)
Maximum 90 degree crosswind
8 kts (10 mph)
Maximum Tailwind
5 kts (6 mph)