Fundamentals of Flight: Field Manual FM Department of the Army. Published by Dept. of the Army Washington, DC (). Used. Quantity Available. This is the current official army U.S. Army Field Manual, unchanged since this edition completed 7th May Field manual (FM) presents information. Headquarters, Department of the Army Field Manual . *This publication supersedes FM , 23 February ; FM , 03 October.

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Fundamentals of flight – Indiana State Library

Maunal remote compass transmitter contains the flux valve, which is the direction-sensing device of the system. Adjust power by referring to the airspeed indicator and torque meter. Some turn coordinator gyros are dual-powered and can be driven by air or electricity.

While holding the indicated rate of turn constant, note heading changes at second intervals. By tolerating a deviation, errors increase. Instantaneous vertical speed indicators IVSIs Figurepage differ from VSI construction by having two accelerometer-actuated air pumps that sense an upward or downward pitch of the aircraft and instantaneously creating a pressure differential.

United States Army Field Manuals

Instrument takeoff ITO is accomplished by referring to outside visual references and flight instruments. Adjust 1-2033 torque meter to maintain desired airspeed. The aviator normally notices precession when the aircraft rolls out of a turn. Holding altitudes and airspeeds As power increases, lowering the pitch attitude slightly may become necessary to avoid increasing the vertical rate.

United States Army Field Manuals – Wikipedia

FM endeavors to ensure that crewmembers understand the basic physics of flight, and the dynamics associated with fixed- and rotary-wing fie,d.

Unless this publication states otherwise, masculine nouns and pronouns do not refer exclusively to men. Common errors made during straight-and-level flight include the following: Army Field Artillery units on 6 Junethe official birthday of. A cross-check is started at the time that the aircraft fk the ground and should include all available instruments to provide a smooth transition to coordinated flight.


Discover the magic of the Internet. The system also monitors and displays warnings when selected navigation instrument readings lack reliability. This maneuver requires an understanding of how ffm enter; maintain bank, altitude, and airspeed during; and recover from the turn. If altitude is off by more than feet, the correction should be correspondingly greater but should never exceed the optimum rate of climb or descent for the airplane at a given airspeed and configuration.

Most aircraft instrument panels have arny basic pressure-operated instruments: If airspeed increases, the nose is too low and should be raised; if airspeed decreases, the nose is too high and should be lowered. To fly a helicopter by instrument reference, knowledge of the approximate power settings is required for that particular helicopter in various load configurations and flight conditions.

The course-indicating arrowhead shown is set to degrees; the tail indicates the reciprocal, degrees. Lock or hold the brakes firmly to avoid creeping while preparing for takeoff. A quick reference diagram is provided to help visualize the correction Figure is a compass turn correction diagram. When setting the gyroscopic heading indicator to agree with the magnetic compass, use the average indication between the swings. An example of cold-weather altimeter correction follows Figurepage Pitot pressure, or impact air pressure, is taken in through an open-end tube pointed directly into the relative wind flowing around the aircraft.

Find More Posts by helmet fire. The CDU normally consists of a display screen, data-entry pad, and function and line select keys.

The sensitive element in an altimeter is a stack of evacuated, corrugated bronze wafers Figure An increase in power causes the helicopter to start climbing, and only slight back cyclic pressure is required to change from level to climb attitude. Aviators should also check other instruments to aid in maintaining the important, or primary, instruments at the desired indication.


Figures from this card are applied to the indications of the compass so that a desired heading may be flown. Some aviators may find it difficult to resist the impulse to move the controls even when their eyes provide data that no control change is called for.

Army Field Manual FM 1-203, Fundamentals Of Flight

Conversely, if the needle moves slowly counterclockwise to indicate a slightly nose-low attitude, assume the pitch correction necessary to regain the desired altitude is small. Straight-and-level flight with airspeed deceasing Fixations are likely during trim changes, attitude changes, gear and flap retractions, and power changes; after checking an instrument or applying a control, continue the cross-check and note the effect of the control during the next cross-check sequence.

Desired pitch attitude is obtained by using the elevator control control wheel, not cyclic to raise or lower the miniature aircraft in relation to the horizon bar. Common errors made during straight climbs and descents include the following: A self-erecting mechanism inside the instrument, actuated by the force of gravity, applies a precessive force, causing the gyro to rise to its vertical position.

Altimeter error caused by nonstandard temperature Some aircraft have navigation instrument indications combined with the attitude indicator and other instruments.

When airspeed changes any appreciable amount, adjust torque about 5 percent over or under the setting necessary to maintain the new airspeed.