Some civil types, including stuff proposed for the Fokker SAE tie-up. Those Dutchmen were nutty about twin-boom pusher aircraft, almost everything they build during the late 1930s seems to be one!! No wonder Kirk continued that theme, and so shall I!
All of the light aircraft are real, the F.37 and F.24 are Kirk's work and the new F.26 is my own design for a new airliner to bridge things until the F.27 Friendship appears in the 1950. I probably also need to look at a long-range type, but I might buy that from someone else since Fokker is getting overloaded.
De Schelde S.20
This twin-boom pusher-layout light aircraft was designed as a trainer for KLM and the military. It has a fixed tricycle undercarriage and is of mixed construction. The prototype first flew on 29 March 1940 and showed good performance & stability. KLM brought fourteen of a dual-control trainer version and production aircraft for private owners have an optional dual layout.
Wingspan: 11.35 m (37 ft 2 in)
Length: 8.65 m (28 ft 3 in)
Height: 2.60 m (8 ft 5 in)
Empty Weight: 840 kg (1,851 lb)
Maximum take-off weight: 1340 kg (2,954 lb)
Wing loading: 78.36 kg / m²
Powerplant: 160hp Hirth air-cooled six-cylinder engine with adjustable two-blade wooden propeller
Maximum speed: 216 km/h (134 mph) at 3,000 m (9,842 ft)
Cruising speed: 180 km / h (111 mph) at 3,000 m (9,842 ft)
Ceiling: 4,800 m (15,750 ft)
Normal range: 650 km (403 miles)
Maximum range: 780 km (484 miles)
Fokker SAE F.37S Springbok
Classification: medium-range airliner
Length: 23.59 m (77 ft 4 in)
Wingspan: 33 m (108 ft3 in)
Wing area: 171.87 m² (1,850 ft²)
Max takeoff weight: 18000 kg (39,683 lb)
Powerplant: four 1,250hp Rayton Hurricane III 14-cyl radial engines
Maximum speed: 392 km/h (244 mph)
Range: 2500 km (1,553 miles)
Service ceiling: 9753 m (32,000 ft)
Rate of climb : 5.48 m/sec (1,079 ft/min)
Passengers: 32 seated four abreast or 16 sleeper berths, facilities include toilet and galley
Crew: three flight crew, one cabin crew
Cargo: baggage and up to 453 kg (1,000 6b) of mail
Notes: This is a further development of the F.37 Arend for the South African market, it is fitted with local engines and a stronger undercarriage with the same specially manufactured 70” Dunlop tires to allow the use of rough airstrips. The rear fuselage also has a large cargo door and all aircraft can be converted to freight duties. The type has been in production since 1940.
Fokker F.24
Classification: medium airliner
Length: 20.7 m (67 ft 9 in)
Wingspan: 28.5 m (95 ft 6in)
Height: 5.2 m (17 ft)
Empty weight: 8500 kg (18,740 lb)
Max takeoff weight: 13250 kg (29,211 lb)
Powerplant: two 1,600hp Wright R-2600 Cyclone radials
Cruising speed: 330 km/h (205 mph)
Range: 1,200 km (745 miles) with full payload
Passengers: 24 seated three abreast in two cabins, facilities include toilet and galley
Crew: four flight crew, one cabin crew
Cargo: there is a cargo hold with a cargo door of the starboard side behind the cockpit, two more in the wing centre section and another in the rear fuselage
Operators: KLM and KNILM
Availability: Still in production.
Notes: features include an integral stair which folds into the side wall of the fuselage, a tricycle undercarriage and the fuselage underside is reinforced to protect the passengers in the event of an emergency wheels-up landing. Entered KLM service in early 1937.
Fokker F.24-II
A variant powered by Minerva licence-built Bristol Hercules radial engines. A prototype flew in March 1940 and production began later that year. Specifications are unchanged.
Fokker SAE F.24S and F.24ST
This is a version of the F.24 built by Fokker SAE for the South African market. These differ in being powered by two 1,640hp Rayton Hurricane X 14-cylinder radial engines, sturdier undercarriage with lower-pressure tires, desert survival kit, extra HF radios and thicker underfuselage skins to resist stones and debris on take-off and landing. The F.24ST is a cargo aircraft which has the cargo door and tip-up seats of the military F.24T married to the other F.24S changes. Specifications are unchanged.
Fokker F.25 Promotor
A single-engined, twin-boomed, four-passenger monoplane with a pusher engine mounted at the rear of a central nacelle. It is a development of the C.XIII observation aircraft. It is of wooden construction and has a retractable tricycle undercarriage. When being used as an air ambulance aircraft it can carry a patient on a stretcher, which is loaded through a hatch in the aircraft's nose. The prototype first flew in May 1944. Production is carried out by Aviolanda under sub-contract.
Wingspan: 12.00 m (39 ft 4 in)
Length: 8.53 m (28 ft 0 in)
Height: 2.97 m (9 ft 9 in)
Wing area: 18.0 m² (193 ft²)
Empty weight: 961 kg (2,115 lb)
Max. take-off weight: 1,427 kg (3,140 lb)
Powerplant: 240hp Argus As410 or 190hp Walter Major 6 or 190hp Lycoming O-435-A
Maximum speed: 227 km/h (, 141 mph)
Cruise speed: 185 km/h (115 mph)
Stall speed: 85 km/h (53 mph)
Service ceiling: 3,400 m (11,150 ft)
Climb to 1,000 m (3,300 ft): 6.2 min
Range: 950 km (590 miles)
Fokker SAE F.25 Pretoria
A version of the F.25 Promotor built for the South African market. It differs in having a local 240hp Stuart engine, a sturdy fixed tricycle undercarriage and can be delivered in the following variants; two-seat dual control trainer, four-seat light aircraft, air ambulance with one stretcher, aerial survey with two camera and as an anti-poaching aircraft with a nose searchlight and the ability to fire hand guns and rifles from the side windows.
[bFokker Partner[/b]
This is a smaller variant of the Promotor with a similar layout but with only a two-seat side-by-side cockpit and a fixed undercarriage. The prototype first few on 11 May 1945. Production is carried out by Aviolanda under sub-contract.
It was planned to use an approximately 85hp engine (make not specified) and some brief details:
Wingspan 10.0 m (32 ft 8 in)
Length 6.85 m (22 ft 4 in)
Height 1.80 m (5 ft 9 in)
Powerplant: 85hp air-cooled piston engine
Maximum speed 185 km/h (115 mph)
Cruising speed: 150 km/h (93 mph)
Maximum ceiling: 3700 m (12,140 ft)
Range: 570km (354 miles)
Fokker F.26
A medium twin-engined airliner with a high wing and tricycle undercarriage. The F.26 was designed to replace the F.24 series and is a multi-purpose type which can be specified with a range of cabin interiors and a cargo/passenger door to cater for passenger or freight flights. The cabin can seat up to 48 passengers four-abreast in maximum configuration, normally 36 passengers are carried. A toilet and a galley are fitted. A flightcrew of three is carried, along with up to two stewards/ stewardesses. The first of three prototypes flew on 9 February 1945 and after passing certification tests in early 1946, was sold on the open market and production also began in SAE as the F.26S. The launch orders were from KLM (45) and KNILM (32).
Wingspan: 29 m (95 ft 2 in)
Length: 25.06 m (82 ft 3 in)
Height: 8.72 m (28 ft 7 in)
Wing area: 70 m2 (750 sq ft)
Empty weight: 11,204 kg (24,701 lb)
Max take-off weight: 18,800 kg (41,446 lb)
Powerplant: 2x 2,375hp Minerva Condor II 24-cylinder radial engines
Cruising speed: 460 km/h (286 mph)
Service ceiling: 8230 m (27,000 ft)
Range: 2,300 km (1,430 miles)
Koolhoven F.K.53 Junior
This is small low-wing cantilever monoplane sports aircraft of conventional design with tandem seating for two under a long canopy built from 1933. The gull wings carry the main units of the tailwheel undercarriage. The first two aircraft were purchased by the Dutch national flying school in 1933 after testing was completed and several were sold to Belgium.
Wingspan: 10.50 m (34 ft 5 in)
Length: 7.20 m (23 ft 8 in)
Height: 2.05 m (6 ft 8 in)
Wing area: 15.5 m2 (167 ft2)
Empty weight: 310 kg (680 lb)
Gross weight: 540 kg (1,190 lb)
Powerplant: 62hp Walter Mikron
Maximum speed: 150 km/h (94 mph)
Service ceiling: 3,200 m (10,500 ft)
Range: 370 km (230 miles)