Home      Boeing B-9

Boeing B-9

YouTube - Boeing B-9


        Primary Function:
        Weight Empty:
        Gross Weight:
        Machine Guns:
        Cruise Speed:
        Max. Speed:
        Initial Climb:
        First Flight:
        Year Deployed:
P & W radial
2- 600 shp ea.
8,360 lbs.
13,350 lbs.
3 - .30 cal.
2,200 lbs.
51 ft. 6 in.
76 ft. 9 in.
165 mph
188 mph
1,060 fpm
22,600 feet
490 miles

Boeing B-9
Boeing B-9
Click on the picture to hear the wav sound.

A total of seven Boeing B-9 (officially YB-9) prototypes were built. The first two were self-funded and produced by Boeing as proof of concept aircraft to show the U.S. Army the advantages of modern design.

The Boeing B-9 was a single wing design that had no external bracing, thus reducing drag. The fuselage design saved weight by being of stressed skin construction. Landing gear were retractable.

The rudder of the Boeing B-9 had an additional small hinged surface called a "tab" attached to its trailing edge. The rudder pedals were attached to it by cables, allowing a relatively small movement to produce a larger deflection of the rudder by using the advantage of leverage. The Boeing B-9 was the first U.S. aircraft to incorporate the control.

The tradition of the aircraft crew being exposed to the elements via open cockpits continued with the Boeing B-9. In addition, similar to other bomber aircraft of the time, ordnance was carried externally, beneath the wings and fuselage.

Flying the Boeing B-9 was a challenge due to the limited visibility of the pilot. Engines of the aircraft limited side vision, while the fuselage of the aircraft limited the forward view.

As Boeing B-9 design progressed with each prototype model, different engines were fitted to the aircraft. They produced more power at lower altitudes, were lighter in weight, and had cowls that permitted further streamlining. Other Boeing B-9 design changes were made to the rudder shape and trim tab, using metal instead of cloth covered control surfaces, and using three-bladed instead of two-bladed propellers to produce additional torque.

The result was the Boeing B-9, an aircraft that was not only faster than other bombers of the time, but could outrun fighter aircraft as well. Unfortunately for Boeing, other aircraft manufacturers were also producing their own advanced bomber aircraft which eclipsed the Boeing B-9 in performance.

Boeing B-9
Boeing B-9

Pictured above and first below is the good looking Boeing B-9 scratch built by greenseaships of RC Groups, aka Barrett. Its wingspan is 84" and length is 55".  It is propelled by a pair of Power 15 motors and weighs around 7 1/2 lbs.

Boeing B-9

Boeing B-9
Boeing B-9

The Boeing B-9 built from Cleveland Plans is available in wingspans of 23", 30 1/2", 46", 61", giant scale 92", 122 1/2" and 184".

Boeing B-9
Boeing B-9

The free flight rubber power model Boeing B-9 built by Mike from the Marin Aero Club.

Boeing B-9
Boeing B-9

The Boeing B-9 on display at the 2005 IPMS Nationals.

Boeing B-9
Boeing B-9

We received the following email with the above picture from DemonDriver, aka Chris, of RCGroups: "I just wanted to share with you my latest progress pic of my Boeing B-9 that I've almost finished and hope to maiden soon. It has a wingspan of 84", length of 55" and a flying weight of around 6-8 lbs. with 2 working flour bomb racks.  It is powered by Turnigy 42-60 6000 Kv motors. Barrett used my B-9 as a template for his Boeing B-9."
Thank you for your email and picture, Chris. We look forward to receiving a picture of your completed Boeing B-9 soon.

Boeing B-9
Boeing B-9

We received the above picture from Chris showing his newly completed Boeing B-9. Nice job!

Eduardo Escalona posted three view drawings of a Boeing B-9 at FortuneCity.

ARUP of RCUniverse started a thread about scratch building a Boeing B-9.

Tucson Don of WattFlyer is looking for three views from which to build a Boeing B-9.

Wings Palette has numerous color schemes that can be used for a Boeing B-9.

At YouTube SEVNTIGERS commented about a video of a Boeing B-9.

Email us.