Robin HR100
# Robin HR100

The Robin HR100 is a French four-seat light monoplane, designed by Chris Heintz and built by Avions Pierre Robin as metal-winged version of the Robin DR253 Regent.

## Development

The prototype of the Robin HR100 was the prototype DR253 Regent which was rebuilt with metal wings and powered by a 180 hp (134 kW) Lycoming O-360 engine. It first flew on 3 April 1969 as the Robin HR100/180. The HR100 is a low-wing cantilever monoplane with a conventional cantilever tail unit and a fixed tricycle landing gear. A number of different variants were produced in the 1970s. From 1972 a high-powered improved version was produced as the HR100/285 with a 285 hp (213 kW) Continental Tiara 6-285B engine and retractable landing gear and airframe modifications.

The French Air Force ordered a number of HR.100/250 aircraft in the mid 1970s and these were used for communications and other duties.

A two-seat trainer version was developed as the HR200, and a modified version with a lighter airframe and new fin and rudder was developed as the R1180 Aiglon in 1977.

## Variants

### HR.100 Royal

    1969 Prototype with a 180hp (134kW) Lycoming O-360 engine, one built.

### HR.100/180

    1976 Prototype with a 180hp (134kW) Lycoming O-360 engine, one built.

### HR.100/200B Royal

    Initial production version with a 200hp (149kW) Lycoming IO-360 engine.

### HR.100/210 Safari

    Production version with a 210hp (157kW) engine, 113 built of both 200B Royal and 210 Safari variants.

### HR.100/235TR

    Experimental HR.100 with an enlarged tail and retractable landing gear and a 235hp Lycoming O-540-B engine, one built.

### HR.100/250TR

    HR.100/235 with a 250hp (186kW) Lycoming IO-540-C4B5 engine, 24 built.

### HR.100/285TR Tiara

    HR.100/235 with a 285hp (213kW) Continental Tiara 6-285 engine, 37 built

### HR.100/320 4+2

    Experimental version with two extra children's seats, one built

## Operators

### Military operators

**France**

* French Air Force
* French Navy

## Specifications (HR.100/285)

Data from Jane's All the World's Aircraft 1976–77

General characteristics

* Crew: 1
* Capacity: 3–4 passengers
* Length: 7.59 m (24 ft 11 in)
* Wingspan: 9.08 m (29 ft 9 in)
* Height: 2.71 m (8 ft 11 in)
* Wing area: 15.20 $m^2$ (163.6 sq ft)
* Aspect ratio: 5.36:1
* Airfoil: NACA 64A515 (modified)
* Empty weight: 840 kg (1,852 lb)
* Max takeoff weight: 1,400 kg (3,086 lb)
* Fuel capacity: 440 L (97 imp gal; 120 US gal)
* Powerplant: 1 × Teledyne Continental Tiara 6-285 flat-six, 213 kW (285 hp)
* Propellers: 3-bladed Hoffmann wooden constant-speed propeller, 2.00 m (6 ft 7 in) diameter

Performance

* Maximum speed: 325 km/h (202 mph, 175 kn) at sea level
* Cruise speed: 293 km/h (182 mph, 158 kn) (65% power)
* Stall speed: 110 km/h (68 mph, 59 kn) (flaps down)
* Never exceed speed: 360 km/h (220 mph, 190 kn)
* Range: 2,344 km (1,456 mi, 1,266 nmi) (econ. cruise)
* Service ceiling: 5,700 m (18,700 ft)
* Rate of climb: 6.0 m/s (1,180 ft/min)
* Takeoff run to 15 m (50 ft): 600 m (1,970 ft)
* Landing run from 15 m (50 ft): 660 m (2,170 ft)
