Main Menu

Nippi NP-100A Albatross
Nihon NP-100A Albatross
Nippi NP-100A Albatross
This Japanese side-by-side two-seater motor glider, designed and built by the Nihon Hikoki Kabushiki Kaisha (Japan Aircraft Manufacturing Co Ltd) Of all-metal construction, Nippi began the design of the Albatross late in 1973. The Albatross has cantilever shoulder wings with a single spar and two-section metal skinned flaps on each side that move upwards or downwards; the inner ones can be lowered to 80° for use as air brakes, and there are no spoilers. The fuselage is a semi-monocoque structure, with the forward-retracting twin-wheel main landing gear operated mechanically with spring assistance, and positioned just ahead of the 'Venetian blind' air intake doors. There is also a steerable fixed tailwheel linked to the rudder movement. The two pilots are provided with dual controls and sit under a rearward-hinged flush-fitting framed cockpit canopy. The unswept tail unit has conventional elevators and rudder. Powered by a motorcycle engine 'buried' in the centre of the fuselage aft of the main landing gear and driving a ducted fan.
The prototype NP-100 made its first flight on 25 December 1975; several modifications were made as a result of the first flight test programme, and a second such programme was to take place during January-March 1978 so as to finalise details of the production version.



The prototype's powerplant is a modified 60hp Kawasaki H2 three-cylinder two stroke air-cooled in-line motorcycle engine of 748cc driving a four-bladed wooden ducted fan of 23.5in diameter, the fan duct being under the tail boom. There are triple 'Venetian blind'-type air intake doors on each side of the fuselage, which are interconnected with the engine starting circuit so as to prevent the engine running when the doors are closed. There is a single fuel tank in the fuselage of 8.8 Imp gallons capacity. It was expected that production aircraft would have a 68hp Nippi 'flat four' engine. Planned production is now awaiting the final choice of a type-certificated powerplant.
Engine: Kawasaki HZI 748 cc, 44.7 kW (60 hp)
Span: 18.0 m / 59 ft 0.25 in
Wing area: 18.0 sq.m / 193.75 sq.ft
Aspect ratio: 18.0
Wing section: Wortmann FX-67-K-170
Length: 8.0 m / 26 ft 3 in
Height: 2.23 m / 6 ft 7.5 in
Empty weight: 420 kg / 926 lb
Max weight: 600 kg / 1,322 lb
Fuel capacity: 40 litre / 8.8 Imp gall.
Water ballast: None
Max wing loading: 33.3 kg/sq.m / 6.82 /b/sq.ft
Max level speed at sea level: 99 mph / 86 kt / 160 km/h
Max cruising speed: 74 mph
Stalling speed: 35 kt / 65 km/h
Min sinking speed: 0.8 m/sec / 2.62 ft/sec at 51.5 mph / 44.5 kt / 83 km/h
Best glide ratio: 30:1 at 56 mph / 48.5 kt / 90 km/h
ROC: 120m/min / 394 ft/min
Take-off run: 365 m / 1,200 ft
Range with max fuel: 124 miles / 200 km / 108 nm

Copyright © 2021 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.