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Vereinigte Flugtechnische Werke (VFW) / Fokker
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VFW Fokker H9 from 1968



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VFW H5 and H7



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VFW tilt-wing aircraft based on a Heinkel design

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...

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Great find, Leela! What was your source plz?

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VC-400 tandem tilt-wing, 1965. Both pics From Flight International, 1965.

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During the 1960s, a number of VTOL programs were carried out by the West Germany aerospace industry. One of the most interesting was the VFW VC-400, which proposed two tilt-wing installations for VTOL flight.

Both tilt wings were located high on the fuselage, with the front wing positioned directly behind the co.ckpit. The rear wing was placed in front of the tail assembly. Turboprop engines were located on each wingtip - a most-interesting concept to be sure.

 

S.Markman & B.Holder "Straight Up: A History of Vertical Flight", 2000



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555 wrote:

Great find, Leela! What was your source plz?


 

Lost it, sorry. And the third pic in airfoil's post is from Flying Review International, 1968.



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An artist's impression of the VC-400 from http://paralay.com/vstola.html



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http://www.aiaa.org/tc/vstol/unbuilt/vfw/images/vc_400_3.jpg

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Model of VFW VC-400. It was built in 1968.

Source is down right now.


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-airfoil- wrote:

Model of VFW VC-400. It was built in 1968.


Source is down right now.


http://www.myheimat.de/lengede/freizeit/vfw-vc-400-m887585,201749.html



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VFW-Fokker VC-500 found in Flying Review International, 1970



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Leela25 wrote:

VFW-Fokker VC-500 found in Flying Review International, 1970


 

Attachment has it labeled "VC-400".



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Commander31 wrote:

Attachment has it labeled "VC-400".



It was a mistake.



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Leela25 wrote:

VFW-Fokker VC-500 found in Flying Review International, 1970


 

An enlarged version of the VC-400. Maximum take-off weight 46.7t, would have to carry 120 passengers.



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VC 200 Tilt-wing


VC 200 Combat Aircraft / Medevac
  • Power: two 1,342 kW engines mounted in the rear of the fuselage
  • Maximum VTO Weight: 6,000 kg (13,230 lb)
  • Payload (STOL): 2,400 kg (5,300 lb)
  • Payload (VTOL): 1,815 kg (4,000 lb)
  • A medical evacuation pod was conceived that would have allowed the transport of two casualties on stretchers and a doctor.
  • 2-side-view


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VC 300 Tilt-wing, same source...

Combat/ Transport Aircraft
  • Power: four 1,800 hp engines
  • Maximum VTO Weight: 11,000 kg (24,250 lb)
  • Payload (STOL): 4,800 kg (10,582 lb)
  • Payload (VTOL): 3,800 kg (8,377 lb)
  • Crew: 2
  • It could have ferried 12 troops in a detachable pod or various combinations of bombs
  • 2-side-view


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VC 400 Tilt-wing

Developed at the Munich division of VFW under Karl Schw�rlzer (head of R&D) and Dr. Siegfried G�nter (project manager). Two versions: one civilian and one military. Originally conceived in 1968. The development of the prototype propeller was nearly complete by 1970. A total of 7,000 hr of wind tunnel testing had been completed by 1970.

The construction of the test rig was to have been completed just a few months after the program was cancelled in 1971. All long-lead items had already been procured. At that time, all studies, analyses and wind tunnel testing had been success-fully completed.

The V/STOL Encyclopedia Series: Volume 1 Germany 16 July 2001. VC 400

Power (target): 4 x 3,610 kW Power (development aircraft): Two 2,927 kW General Electric T64-GE-16 turboshaft engines on each wing Power (production version): Two 3,042 kW Lycoming LTC-4V-1 engines on each wing Power (late production version): Two 3,982 kW General Electric T64 turboshaft engines on each wing Propellers: 7 m (23 ft) diameter; All interconnected (all propellers will function in event of engine failure) Cruise Speed: 722 km/h (390 kt) at 8 km altitude Maximum Speed: 760 km/h (410 kt) at 4 km altitude Maximum Altitude: 9,800 m (32,000 ft) Maximum rate of climb: 29 m/s (95 ft/s) Range: 800 km (430 nm) Wing span: 19.5 m (64 ft) (rear) Wing Area: 19.9 m (214 ft) (forward); 44.6 m (480 ft) (rear) Length: 22.4 m (73.5 ft) Height: 7.7 m (25.2 ft) Operating Empty Weight: 28,940 kg (34,600 lb) Fuel load: 2,960 kg (6,525 lb) Payload: 3,455 kg (7,620 lb) Maximum STO Weight: 28,940 kg (63,800 lb) Maximum VTO Weight: 26,475 kg (58,370 lb) Capacity: 58 passengers (civilian version) Luftfahrttechnik, RaumfahrttechnikBand 14 (1968): 96. West Germany.

  • Wing span: 11 m (forward), 19 m (rear)
  • Length: 21.7 m
  • Height: 7.65 m
  • Capacity: 60 passengers (civilian version) or 82 (military version)
  • 3-side-view

2-side-view

  • Wing span: 10.5 m (forward), 19 m (rear)
  • Length: 21.3 m
  • Height: 7.3 m

VC 400 single wingSingle wing version designed 1966

  • Power: 4 General Electric turboshaft engines
  • Propeller: 4 propellers (6.35 m diameter) all interconnected (all propellers will function in event of engine failure). A pitch control propeller was behind the tail (2.93 m diameter).
  • Wing span: 27.0 m
  • Length: 21.2 m
  • Height: 9 m
  • Payload: 5,440 kg for a 1000 km mission
  • 2-side-view



In 1966, sea-based variants of the VC 400 concept were studied for the German navy. Four different concepts were considered for this mission.

  • Power: 4 General Electric T64-GE-12 engines
  • Propeller: 4 propellers (7 m diameter)
  • Wing Area: 20 m (215 ft) (forward); 40 m (430 ft) (rear)
  • Maximum VTO weight: 23,000 kg (50,700 lb)
  • Fuel load: 6,000 kg (13,225 lb)
  • Payload: 9,650 kg (21,275 lb)
  • could operated from solid surfaces
  • could load a 2 m (6.6 ft) wide troop transport pod with 30 folding seats


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VC 500 Tilt-wing

Larger version of VC 400. Developed at the Munich division of VFW. The VC 500's major difference to the VC 400 (beyond the size increase) was the departure from the shaft coupling system between the propellers The VC 500 instead used two turboprop engines per propeller, mated by a free wheel arrangement.
  • Power: 8 x T64-GE-S5C-1 3,984 kW engines
  • Propellers: 8 m (26.2 ft) diameter
  • Cruise Speed: 740 km/h (400 kt) at 6 km altitude
  • Maximum Speed: 766 km/h (414 kt) at 3.3 km altitude VC 500
  • Range: 800 km (430 nm)
  • Wing span: 21.8 m (71.5 ft) (rear)
  • Wing Area: 32 m (344 ft) (forward); 70.4 m(758 ft) (rear)
  • Length: 31.8 m (104.2 ft)
  • Height: 9.6 m (31.5 ft)
  • Operating Empty Weight: 26,815 kg (59,116 lb)
  • Fule load: 5,215 kg (11,500 lb)
  • Payload: 9,200 kg (16,300 lb)
  • Maximum STO Weight: 46,800 kg (103,175 lb)
  • Maximum VTO Weight: 41,300 kg (91,000 lb)
  • Capacity: 97 passengers
  • 3-side-view
In addition to the baseline VC 500 concept, a number of technological improvements were also considered for increased performance. The second two technologies were seen as potentially increasing the vertical take-off weight.
  • variable diameter propellers (reducing from 8 m to 5.5 m for better cruise performance)
  • variable camber propellers
  • propellers with blown edges/tips
  • Maximum VTO Weight: 44,000 kg (97,000 lb) or 45,000 kg (100,00 lb)
  • Capacity: 120 passengers
  • A larger version of the GE T64, known as the "C" engine, was also envisioned as begin able to produce 6,210 hp (4,630 kW) by 1973 as an alternative.
A GE 1/S1A-2T engine was also considered at 9,590 hp (1,751 kW), to be ready in the 1975 timeframe. This would have allowed reducing the number of engines by half, although cross-shafting would probably then have been required.


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Well done, 555. clap.gif



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Commander31 wrote:

Well done, 555. clap.gif


 

Thanks. aww

Also found this from the same site. Looks similar to the image Leela25 found.



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Westland/VFW-Fokker P-277 'Fledermaus' attack helicopter ^_^



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Cool find! Is that the real mockup? O_O

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It sure is, and here is a better pic. Unknown source.

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Powerplant: 2 x Rolls-Royce Gem 4 turboshafts, 2.5 min contingency rating 1,050shp and continuous rating 865hp.
Internal fuel 740kg.
Performance: at 4309kg armed, 278km/h cruise speed at sea level. Range 584km at cruise speed at sea level. Max inclined climb, 13.46m/sec: single engine emergency climb 5.58m/sec; ceiling 4875m.
Weights: 2464kg empty, basic armed 2998kg, 8 HOT + 20mm cannon + ammunition, 3749kg; max mission TO, 4309kg; MTOW, 4763kg.
Dimensions: rotor dia, 12.8m; tail rotor dia, 2.21m; fuselage length, 13.1m; width, 1.1m; overall length 15.16m; overall height 3.5m.

Owes much to the cancelled anti-armour Lynx for the French Army and using the rotor, transmission and powerplant of the Lynx. Due to Lynx commonality only 2 years to first prototype, then 3 years to first production delivery anticipated. No less than 700 configurations studied.

Armament 8 HOT or TOW missiles, + 20mm or 30mm cannon with 250 rounds for antiarmour role, or cannon + 8 Redeye or Stinger missiles for AA role.

Rival MBB/Aerospatiale project using BO-105 dynamic components.

Attached is a pic of the wind tunnel model and two 3-views. Info and last 3-view from Air International, August 1977.


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http://www.flug-revue.rotor.com/frheft7x/FRHeft77/FRH7707/FR7707c.htm

The helicopter scene of the aero salon of this year was clearly characterized by the model debut of a new combat helicopter, which VFW Fokker as well as Westland Helicopters developed in the last two years in all silence. The new helicopter with the designation P.277 bat corresponds to a large extent to the tactical demands of the German Federal Armed Forces for the PAH II. it resembles outwardly the American Bell AH-1 Hueycobra and ranks in the weight class by 4000 kg. As power plant as with the Lynx two 900 WPS turbines of the type Rolls-Royces RB.360 are intended. In addition one took over the entire rotor system of the Lynx, which a crucial contribution might be for standardization within NATO. Beyond that this would reduce the expenditure at costs and time for the development of the new helicopter to half.

With a realization of the all-weather suited P.277 this could take up for instance in the middle of the eighties its active troop service with the German army aviators. As its primary Einsatzaufgaben are considered the battlefield support with solid tank break-throughs, the purposeful fight of other armored ground targets and the escort of heavy transport helicopters. With a flying weight by 4200 kg and with eight HOT guided weapons the P.277 nearly 290 km/h is equipped to be fast. In addition it can be armed with a rotating turret at the fuselage lower side with 20 a mm cannon with 250 shot. One may be strained on the further development of the PAH II, which was again animated by the appearance of the P.277.



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http://www.flightglobal.com/PDFArchive/View/1977/1977%20-%201901.html

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Also see MBB's proposal for the PAH-2 here:

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