The Development of Boeing's 367-80

The Development of Boeing’s 367-80

or

Charging Into the Jet Age

Armed With Only a Slide Rule and Spline

.

Ben Almojuela

Boeing Commercial Airplanes

Pacific Northwest AIAA Technical Symposium

Nov. 7, 2009

Background: USA 1946

• Wartime rationing of seats on airline flights is

rescinded

• People were exposed to flying via passenger

airplane during the war

• Many military transport airplanes are declared

surplus and are converted to commercial

transports

• Douglas emerges from the war known as

the transport company; Boeing is known as

the bomber company

Commercial Airliner Competition

1946-52

Convair 240/340

Lockheed Constellation

Martin 404

Douglas DC-4

Boeing Stratocruiser

Martin 202

US Commercial Airplane Deliveries

1947 - 1952

160

140

120

Convair

Martin

100

80

Boeing

20

Lockheed

40

Douglas

60

0

1947

1948

1949

1950

1951

1952

Boeing is a bomber company

that “dabbles” in commercial transports

12

Built

1938

XB-15

Model 314

10

Built

1938

B-17

Model 307

56

Built

1947

B-29/B-50

KC-97

Model 377

Reducing Development Risk

New Transonic

Jet Transport

B-47

B-52

Aggressively swept wing

Podded engines

Stratoliner

Stratocruiser

Passenger fuselage

Landing gear

The Foundation

BTWT

Transonic

Knowledge

1946 Concept

W.L. Kellerman Dated December 9

1949 Concept (B-47 Derived)

Configuration Evolution from 367/377-

Configuration Evolution from 473-

473-60C Wind Tunnel Model

473-60C Wind Tunnel Model

707-6 (1952)

707-7 Alternatives

367-80 “Firm Configuration”

Span

Length Overall

Height

Fuselage Width

Main Gear Track

Max TO Weight

Operating Empty Wt

Engines

SLST – ea

Max Passengers (if equip)

Max speed

Cruise speed

Service ceiling

Max range (no payload)

130 ft

127 ft 10 in

38 ft 3 in

11 ft

21 ft

190,000 lb

88,890 lb

PW JT3P

9500 lb

130

478 kt @ 35000...