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  Neiva B Monitor
Neiva B "" at the Rio Claro Aeroclube
At the end of World War II Brazil was conducting the "National Aviation Campaign", a program of re-equipment and incentive to air clubs and the national aeronautical industry.
The lack of gliders to replace the Brazilian fleet, then composed mostly of German aircraft of the 1930s, was of great concern. Josė Carlos de Barros Neiva then developed a project that retained the characteristics of the Grunau Baby, (which made up a large part of the Brazilian fleet), but biplace.
The B Monitor is basically constructed of wood, high wing configuration with central torsion cabin, freijó stringer (Cordia goeldiana) and aeronautical plywood cover. The rear section to the centre of the wing is covered with fabric.
The aircraft has a dihedral of 0.5° and the wings are attached to the fuselage with wooden uprights. Ailerons are wood covered with fabric and wooden spoilers located just in the extruder of the wing.
The fuselage is mostly of wood, semi-monocoque construction and steel tubes in the wing-fuselage joint. The cockpit has dual controls, with factory instrumentation on the front seat (although some have been modified with addition of a rear panel). The empennage is conventional. The fixed landing gear has a wheel behind the centre of gravity. The aircraft has a front skid with rubber shock absorbers under compression.
The prototype, PP-PCB, made the first flight in 1945 and the type certificate was issued in 1946.
The "National Aviation Campaign" bought the prototype and another 20 units for distribution to the air clubs, built between 1945 and 1955.
The Neiva B has a low-load, which provides good performance in thermal rise and low stall speed (52 km / h). The wings, because they are heavy, have a lot of rolling inertia, making the aileron commands slow to respond. The elevator and rudder controls, however, have good efficiency. The small size of the spoilers resulted in the common use of slip during the final approach.
In 1959 Neiva developed the version Neiva B "Monitor Modified", with different nose, and larger cockpit. The fuselage became welded steel tubes, retaining the original wing. One copy (serial number CTA-02 A-223) was built for testing at the Aerospace Technical Centre, later donated to the CVV-CTA.
The only Neiva "B modified" produced, in operation in the CVV-CTA in 2009
The "B" Monitors were distributed to several aero clubs and trained hundreds of pilots. Many Brazilian records were broken with the type. Up to 2000, was still used in aero clubs such as CVV-CTA, Rio Claro, Tatuí, Bauru and Brasília.
Wingspan: 15.86 m (52 ​​ft 0 in)
Wing area: 18.4 m 2 (198 sq ft)
Aspect ratio: 13.67
Aerofoil: Göttingen 535 - NACA 0009
Length 7.1 m (23 ft 4 in)
Height: 1.13 m (3 ft 8 in)
Weight Empty 215 kg (474 ​​lb)
Max takeoff weight: 375 kg (827 lb)
Speed ​​Never Exceeds: 145 km / h (90 mph; 78 kn)
G range: +5.33 -3.31 at 145 km / h (90.1 mph, 78.3 kn)
Maximum glide ratio 18 at 67 km / h (41.6 mph, 36.2 kn)
Sinking Ratio: 0.78 m / s (154 ft / min) at 55 km / h (34.2 mph, 29.7 kn)
Loading: 20.3 kg / m 2 (4.2 lb / sq ft)
Crew: 2

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