Oribi VG
From the Ourebia ourebi (Oribi)

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Available in KIT form and READY TO FLY

Why the Oribi?
The Oribi design is based on the proven Savannah. By installing
a less expensive engine and systems the Oribi offers a much
reduced price compared with the Rotax 912S powered Savannah.
The Oribi’s low purchase price makes it more affordable to entry
level pilots. With a lower cost, you can purchase the Oribi sooner and start flying.
The Oribi is marketed under the name “Bingo” in countries outside of Africa.

Why ICP chose the base Savannah for the development of the Oribi?
The basic airframe is the similar to the Savannah but lighter with a maximum all up mass of 520 kg. Due to the lighter engine and airframe, the Oribi still has a respectable useful mass. The Oribi is quick to build and economical to operate.

How does the Oribi perform?
The Oribi performs well on less power because of its reduced weight and the overall efficiency of the aircraft’s design. This results in a very short takeoff, optimal climb, fair cruise speed and excellent slow flight performance.

How does the Oribi VG perform?
The Oribi VG has an even better improvement than the Savannah when fitted with the VG wing. Due to the low drag in the VG wing, the smaller engine performance is enhanced to an even greater extent you can comfortably cruise at 130 kph (70 knots) with the VG wing. Climb out is 100 ft per minute improved and glide ratio around 12:1.

Inside
The Oribi has minimal instrumentation. Like the Savannah, the Oribi has dual drum differential pilot toe brakes, dual throttles and a centrally located stick. Doors, three point seat belts, and seats are included. Flaps are manually controlled. The nose wheel is shock damped with a strong bungee cord. The standard propeller is a two blade DUC Windspoon ground adjustable prop that provides optimal performances in all flight configurations. It is carbon fibre composite and is light and very resistant to abrasion. The Oribi is equipped with ground adjustable elevator trim.

Structure
The airframe exceeds widely accepted load tests prescribed by the countries where it is certified. Like the Savannah the Oribi has been tested for a structural capacity without deformation of +6/-4 g to 520 kg.

Oribi 582
The Oribi 582 is powered by the two stroke 65 hp Rotax 582 with 3.0 reduction gearbox.

Oribi 4S (HKS 700E)
After hundreds of Oribis had been delivered in 2 years it was time to introduce something truly innovative. How could ICP improve on the Oribi without violating its low cost and reduced weight?

The final choice rested on the motor. The 2 stroke engines are relatively inexpensive and produced a lot of power for their weight. However, they have very short time between overhauls (TBOs) and high fuel consumption. ICP wanted an inexpensive engine with low fuel consumption and a much higher TBO. The choice fell on the four stroke HKS 700E engine. It produces sufficient power at a reduced weight and reasonable cost.

The first thing you will notice about the HKS powered Oribi is how quietly it runs.
Its miserly fuel consumption of 10L/hr gives it a remarkable range and very low running cost that more than compensates for the higher purchase price. The current TBO is 800 hrs.

 

Savannah VG Background

The Savannah VG was developed when the ICP design team discovered that the Savannah flew better without its slats than with them. The wing stalled at the same airspeed. They then modified the original wing forward of the spar to an NACA 61058 and installed Vortex Generators (VG) to enhance the stall characteristics. You might well ask; why the slats in the first place? Well, the slats do afford a degree of stability in the stall that make it impossible to spin. In fact the aircraft with slats can be controlled in the lateral axis entirely with the flapperons when stalled. This makes the slatted wing version particularly safe on approach and when flying low at slow speeds. The VG wing also will not spin and is extremely stable in the stall but it does require small rudder input in an asymmetric stall in order to keep wings level. It remains a very safe aircraft in all flight configurations.

The advantages of the VG wing are significant. The aircraft will cruise 8 mph faster at the same rpm setting, climbs at 100 fpm quicker, has a significantly improved glide ratio and a more gentle let down when flaring for the landing. Fuel consumption at the same cruise speed as the slatted wing version is 20% improved. Why the slats in the first place? You may well ask. The Savannah VG has retained all the STOL characteristics of the slatted variant and has given the aircraft more efficient aerodynamics and consequently a better range making it an extremely versatile aircraft. A stall speed ± 25% of cruise speed. Consider that it can also lift its own empty mass and you will battle to find a rival anywhere.

The Savannah VG is a variant of the Savannah MXP740V under the same Type Acceptance Certificate as issued by CAA.

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