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Altitude knob assembly

The knob, graduated setting mechanism and breaker-point adjustment associated with the rate motor’s governed drive.

Drag to turn · Arrow keys to rotate · Home to reset

Follow the mechanism

The historical altitude setting changes the motor regulation mechanism.

Compare the carrier, spring and contact placement with the original drawing; the reproduced scale is not a calibrated flight instrument.

Geometry follows the cited drawings and photographs. Unmeasured dimensions remain approximate; exploded spacing reveals existing model groups rather than a prescribed disassembly procedure.

Used in these components

COMPONENT · PAGE 77

Sight-head assemblies

The housing halves, cardan, telescope and rate-end mechanisms brought together above the stabilizer.

COMPONENT · PAGE 86

Mechanical rate-end computer

A motor-driven disc, movable roller and separate quadrants translating mechanical settings into telescope motion.

Reference views

Inspect the full sheets as well as detail views. Figure numbers belong to their named document; similar-looking parts may be different variants.

AN 11-30-69, figure 27
AN 11-30-69 · Fig. 27

Alternate installed exterior view labels altitude knob. Does not expose spring internals; variant correspondence unconfirmed.

AN 11-30-70, figure 22
AN 11-30-70 · Fig. 22

Inspected computer packet candidate. Differential shaft is a different assembly, not an alternate altitude-knob interior angle.

AN 11-30-70, figure 23
AN 11-30-70 · Fig. 23

Inspected computer packet candidate. Setting spindle is a different assembly; spring cannot establish altitude spring geometry.

norden2.pdf, Lowry Field revised September 1, 1943, figure 32
norden2.pdf, Lowry Field revised September 1, 1943 · Fig. 32

Printed page 66. Oblique cutaway, not exploded. Near upper walls removed to expose concentric spring cases and clutch holders. Dimensions not given.

norden2.pdf, Lowry Field revised September 1, 1943
norden2.pdf, Lowry Field revised September 1, 1943

Printed page 65. Two spring cases and torque coupling to breaker arm.

norden2.pdf, Lowry Field revised September 1, 1943
norden2.pdf, Lowry Field revised September 1, 1943

Printed page 67. Cases nest over friction collar; three adjustable screws per case; two leaf springs, above and below friction ring.

Further reference sources