|National origin||United States of America|
|Manufacturer||Baumann Aircraft Corporation|
|Designer||Jack Boyer Baumann|
|First flight||June 1947|
The Baumann Brigadier was a prototype American light transport aircraft of the late 1940s. It was a twin-engined monoplane, which, unusually, was of pusher configuration. Only two were built, plans for production never coming to fruition.
Development and design
Jack Baumann, who had worked for the Taylor Aircraft Company (later to become Piper Aircraft) and Lockheed, set up the Baumann Aircraft Corporation in Pacoima, Los Angeles, California in 1945. His first design for the new company was the B-250 Brigadier, a twin-engined pusher monoplane intended as an executive transport. It was of all-metal construction, with cantilever shoulder mounted wings, and with the pusher engines mounted in nacelles on the wing. An enclosed cabin accommodated a pilot and four passengers, while the aircraft was fitted with a retractable nosewheel undercarriage.
The first prototype, powered by two 125 hp (93 kW) engines (hence the B-250 designation) flew on 20 June 1947. Piper Aircraft was interested in building a tractor version of the Brigadier, and purchased the B-250 prototype and its drawings, designating it the PA-21, with some sources  claiming that the B-250 formed the basis of the Piper Apache, although other sources state that Piper abandoned work on the PA-21 and that the Apache was unrelated.Reviewing photos of the Stinson Twin prototype (and Piper type designation records) make it pretty clear that the Stinson, not the Baumann, was the basis for the PA-23-150 and -160 Apache.
Baumann continued development of the pusher Brigadier, with the second example, the B-290, being fitted with 145 hp (108 kW) Continental C-145 engines but was otherwise similar to the B-250. Production at a rate of one aircraft per month was planned for the B-290. The Brigadier was chosen by Willard Ray Custer as the basis of his Custer CCW-5, which used the fuselage and tail of the Brigadier, but had a modified wing with the engines sitting in U-shaped ducts, but other than the two CCW-5s no production of the B-290 followed. Baumann continued to propose more powerful versions of the Brigadier, but no airframes resulted.
- B-250 Brigadier
- Initial prototype. Two 125 hp engines.
- B-290 Brigadier
- More powerful second prototype (two 145 hp engines).
- B-360 Brigadier
- Planned version with 180 hp (134 kW) Lycoming engines.
- B-480 Super Brigadier
- Planned enlarged version with 240 hp (179 kW) Continental O-470 engines.
Data from Jane's All The World's Aircraft 1953–54.
- Crew: 1
- Capacity: 4 passengers
- Length: 27 ft 5 in (8.36 m)
- Wingspan: 41 ft (12 m)
- Height: 10 ft 2 in (3.10 m)
- Wing area: 207 sq ft (19.2 m2)
- Empty weight: 2,200 lb (998 kg)
- Gross weight: 3,500 lb (1,588 kg)
- Fuel capacity: 78 US Gallon (288 L)
- Powerplant: 2 × Continental C145-H air-cooled Flat-six engine, 145 hp (108 kW) each
- Propellers: 2-bladed Sensenich
- Maximum speed: 190 mph (306 km/h; 165 kn)
- Cruise speed: 165 mph (143 kn; 266 km/h) (75% power)
- Stall speed: 45 mph (39 kn; 72 km/h) (power on)
- Range: 750 mi (652 nmi; 1,207 km)
- Service ceiling: 18,000 ft (5,486 m)
- Rate of climb: 1,250 ft/min (6.4 m/s)
- Related development
- Horsman, Eugene, "The Mercury Story". Aerofiles. Retrieved 4 April 2010.
- Mondey 1978, p.92.
- Bridgman 1953, p.198.
- "American airplanes: Ba - Bl". Aerofiles. Retrieved 4 April 2010.
- Shumaker, Dan. "Piper PA-23". 1000 Aircraft Photos. Retrieved 4 April 2010.
- Bridgman 1953,p.221.
- "Business and Touring Aircraft...United States". Flight, 10 October 1958,p.582.
|Wikimedia Commons has media related to Baumann Brigadier.|
- "Baumann B290 Brigadier". edcoatescollection
- "One Engine Keeps It Flying" , April 1949, Popular Science see bottom of page