Ho I b, Our First Glider Reborn


Usage

 

Club Sailplane

 

Fuselage Construction

Wood

 

Wing Construction

 

Wood

 

Capacity

 

Pilot

 

Span

 

12.4 m

 

Sweep Angle

 

23 degrees

 

Taper Ratio

 

4

 

Wing Root Thickness

 

20% chord

 

Wing Root Depth

 

2.8 m

 

Rib Spacing

 

0.3 m

 

Wing Area

 

21 m2

 

Aspect Ratio

 

7.3

 

Pilot position

 

Seated

 

Mid-section width

 

---

 

Cockpit width

 

0.60 m

 

Cockpit height (from seat)

 

1.0 m

 

Empty weight

 

120 kg

 

Ballast (water)

 

---

 

Additional payload

 

90 kg

 

Maximum weight

 

210 kg

 

Wing loading

 

10.00 kg/m2

 

Stall speed

 

45 km/h

 

Landing speed

 

45 km/h

 

Minimum Sink

 

0.80 m/s at 60 km/h and 10 kg/m2 loading

Best Glide Ratio

 

21:1 at 72 km/h and 210 kg/m2 loading

Maximum Speed

 

228 km/h

 
When the President of the Gonzales Chaves glider club requested drawings for a simple single-place club glider, I found a welcome opportunity to re-create our first design; this time with elevons and the bell shaped lift distribution.

 The club began to build it in 1950, and finished it about four years later. Incredible obstacles had to be overcome by the club members in order to obtain the necessary building materials. It took a day to travel to Buenos Aires, another day back. The various materials needed had to be scrounged from the dealers in the capital,; mail ordering was impossible, and most items requested had to be backordered.

 With this in mind, a single unit was built, to eliminate the need for assembly bolts and brackets.

 The fact that the designer lived two days of travel away did not expedite things, either.

 After a short hop behind a car, the Ho I b was towed aloft by an airplane. The test was 100% successful, excellent control harmony, clean turns, no stall or spin tendencies, and precise glide path control, by using both drag rudders together.

 The Ho I B was ready for club member use after a couple of minor adjustments, and it flew for the next 25 years without accidents! Performance were quite similar to, and perhaps a little better than the familiar Grunau Baby.

ho_i_b_sm
Views of the Ho I b