Waldo D. Waterman of Santa Monica, California, produced in 1934 design for a two-seat tailless monoplane as a simple private aircraft.
Waldo D. Waterman of Santa Monica, California, produced in 1931 a design for a two-seat tailless monoplane as a simple private aircraft. With a 15° swept-back conventional wing with tip rudders, mounting a fuselage nacelle; front elevator, a front boom featured a trim feature—two small machinists’ vises that could be slid to positions of advantage and then tightened.
With a tricycle gear with steerable nose wheel, this was the first airplane to be equipped with “elevon” control.
Waterman spent several days taxiing around the field, feeling out the plane’s characteristics, then finally tried a faster taxi down the runway, gradually advancing the throttle. On the threshold of take-off, the front wheel dropped into a gopher hole, the doors flew off their hinges, and the “Whatsit” flew at minimal altitude for about 30 feet before coming to a brutal halt. The first actual “flying wing” monoplane was rebuilt to enter a 1933 safety plane competition, winning one of the only two awards out of 30 entries.
Powered by a 100hp Kinner K-5 pusher engine, the two place Whatsit, registered NX12272 became known as Arrowplane and led to the 1937 version.
Designed by William Waterhouse and Lloyd Royer, the 1925 Roamair / Romair 2-3 place open cockpit biplane was built with various engines.
Both spellings were chosen, but Royer’s steadfast claim of “Romair” is tempered by some photos showing “Roamair” on the tail.
Waterhouse Roamair N2910
Five were built: NC990 c/n 18 with Wright J-5, to Pacific Coast Air Service, rebuilt in 1931 as a crop duster with 220hp Wright J-6, and re-registered NR12785
c/n 50 NR1637 with 160hp Curtiss C-6, also used as a crop duster
N2537 with 90hp Curtiss OX-5 in 1926, rebuilt in 1929 with 150hp Hisso as N4867
N2910 with 140hp Bailey Bulls-Eye, also for PAT
N3663 (possibly c/n 1) with 150hp Curtiss K-6, planned for 1928 Nationals cross-country race, but was damaged in a hard landing, possibly rebuilt in 1928 as NX7641 with 150hp Hisso.
1925: (William J) Waterhouse & (Lloyd) Royer Aircraft Glendale CA. USA
1926: Operations sold to Klamath Air Service (Pacific Air Transport), Klamath Falls OR. USA
Waterhouse was a respected structural analyst and engineer who “… undertook an assignment late in 1927 for the Mexican Government, which wanted to [produce] its own aircraft. Two monoplanes were constructed by Tijuana Aircraft Co, headed by Gov Abelardo Rodriquez of Baja California. Plans were furnished by the Mexican War Department and adapted by Waterhouse. The planes, completed in early 1928.
1928: Waterhouse & Associates Design Engrs 6331 Hollywood Blvd Hollywood CA. USA
The 1926 Cruzair two place cabin high wing monoplane was designed by William Waterhouse and built with assistance from Ryan Mechanics Monoplane Co.
Registered N1724 and N2138 it was also seen spelled Cruizair.
Partial plans reportedly were sold to T Claude Ryan as a project for the Mahoney-Ryan Flight School and were responsible for the Ryan M-1 Brougham design.
It was first flown on 12 July 1926 piloted by Franklin Young.
N2138 was bought from Pacific Air Transport by motion picture stunt pilot Dick Grace and extensively modified for his abortive Hawaii-San Francisco transpacific attempt on 4 July 1927. It was shipped back to California and rebuilt as Ryan Mechanics Co Miss Southern California for competitions.
Wassmer Aviation Ltd., founded in 2007, is a small aircraft design and engineering company based in Wohlen, Switzerland. The main purpose of the company is to support the development of the MSW Votec 252T/352T aerobatic training aircraft. The entirely new high-performance aerobatic trainer in side-by-side configuration was designed by Max Vogelsang on the basis of the MSW Votec 322.
It is a main target to achieve, together with MSW Aviation AG, the EASA certification for the Votec 252-T aerobatic trainer and to offer it to the interested clientele.
In addition, Wassmer Aviation support several other experimental aircraft projects.
Wassmer Aviation also keep historical aircraft up in the air. Their ex Swiss Airforce Pilatus P-3/05 is in flying condition and the renovation of a very rare ex Swiss Airforce North American AT-16 (ex U-323) was under way in 2013.
Wassmer started development of an all plastics lightplane in 1962 with the object of producing a comparatively cheap but durable and easily maintained type for ihe private owner.
The WA-50 prototype flew in March 1966 as a four-seater powered by the 112-kW (150-hp) 0-320 engine. One of the first aircraft extensively constructed from glassfibre, production began in the form of the WA-51 Pacific with fixed tricycle landing gear and the 112-kW (150-hp) O-320-E2A engine, though a companion model was produced as the WA-52 Europa with the 119-kW (160-hp) IO-320-B1A driving a variable-pitch propeller. As these two initial models went out of production in 1973 the company introduced the WA-54 Atlantic with the 134-kW (180-hp) O-360-A engine, more baggage volume, revisions to the landing gear, and other modifications.
WA-54 Atlantic
Wassmer went into liquidation in 1977, and by that time sales of the WA-50 series totalled 190 aircraft.
WA-51 Pacific Engine: Lycoming O-320-E2A, 150 hp Wingspan: 30 ft 10 in / 9.40 m Length: 23 ft 11 in / 7.30 m Empty weight: 1320 lb / 600 kg MTOW: 2292 lb / 1040 kg Max cruise 5500ft/1675m: 120 kt / 138 mph / 222 kph ROC SL: 787 fpm / 240 m/min Service ceiling: 14,450 ft / 4400 m Range max fuel: 490 nm / 565 mi / 910 km Seats: 4
WA-54 Atlantic four-seat touring lightplane Powerplant: 1 x Avco Lycoming 0-360-A, 134kW (180 hp) Span: 9.40m (30ft 10 in) Length: 7.5m (24ft7.25in) Max TO weight: 1130 kg (2,491 lb) Max speed: 174mph at sea level Operational range: 839 miles
In 1955 Société Wassmer opened a design department, its first fully original aircraft was the WA-40 Super Sancy. This was a low winged four/five-seat tourer monoplane with a retractable nosewheel undercarriage. The fuselage was of steel tube construction with fabric covering, while the wings were of wooden construction.
The first prototype flew on 8 June 1959, receiving French certification on 9 June 1960. The WA-40 Super IV flew with the 134-kW (180-hp) 0-360-AlA.
WA-41 Super IV F-BNZF (118)
Some 180 aircraft were produced in three variants (the Directeur basic model, the Commandant du Bord deluxe model and the President IFR model) with different equipment standards.
A revised version, the WA-40A, with swept tailplane, followed in 1963. In 1965 the company introduced a variant with fixed landing gear, and this WA-41 Baladou also had a different engine and simplified systems for lower purchase cost.
The final development of this initial series was the WA 4/21 Prestige in 1967 with the 175-kW (235-hp) IO-540 engine, a variable-pitch propeller and refinements such as an autopilot, blind-flying instrumentation and electrically operated flaps.
WA-421 F-BOBZ (401)
The Cerva CE-43 Guepard is an all-metal derivative of the Wassmer WA-40.
WA-40 Super IV Original production. Powered by 180 hp Lycoming O-360-A1A engine. Upswept fin. Two prototypes + 50 production aircraft.
WA-40A Super IV Revised production with swept fin. 180 WA-40 and WA40A built.
WA-41 Baladou Simplified version with fixed undercarriage. 60 built by 1970.
WA 4/21 Prestige More powerful version of the WA-40A with 250 hp Lycoming IO-540-C4B5 engine, electric flaps and landing gear, lengthened nose, the prototype was fitted with a 235 hp engine, 25 built by 1970.
WA-41-250 Alternate designation for the WA 4/21 production aircraft with a 250 hp engine.
WA-40A Powerplant: 1× Lycoming O-360-A1A, 134 kW (180 hp) Length: 8.09 m (26 ft 6.5 in) Wingspan: 10.0 m (32 ft 9.5 in) Height: 2.86 m (9 ft 5 in) Wing area: 16.0 sq.m (172 sq.ft) Empty weight: 740 kg (1,631 lb) Max takeoff weight: 1,200 kg (2,645 lb) Never exceed speed: 310 km/h (167 knots, 192 mph) Maximum speed: 270 km/h (146 knots, 168 mph) Cruise speed: 225 km/h (122 knots, 140 mph) (econ cruise – 55% power) Stall speed: 95 km/h (51 knots, 59 mph) Range: 1,700 km (917 nm, 1,055 mi) Service ceiling: 5,000 m (16,400 ft) Rate of climb: 4.6 m/s (905 ft/min) Crew: 1 Capacity: 4 passengers
WA-41 Baladou four/five-seat touring lightplane Span: 10m (32 ft 9.4 in) Length: 8.09m (26ft 6.5 in) Powerplant: 1 x Avco Lycoming O-360-A2A, 134kW (180 hp) Max TO weight: 1200 kg (2,646 lb) Max speed: 158 mph at sea level Operational range: 1,056 miles
WA 4/21 Prestige Engine: IO-540, 175-kW (235-hp) Prop: variable-pitch
All Aero 