14 CFR 25.111 - Takeoff path. - GovRegs

This also belongs in the configuration section, but it does relate aircraft design to cost.

Misophonia Forum - Allergic to Sound

VMCG must be established, with -
(1) The aeroplane in each take-off configuration or, at the option of the applicant, in the most critical take-off configuration;
(2) Maximum available take-off power or thrust on the operating engines;
(3) The most unfavourable centre of gravity;
(4) The aeroplane trimmed for take-off; and
(5) The most unfavourable weight in the range of take-off weights.

Dellamura, "LEONARDO Computer Aided Aircraft Configuration Development," AIAA Paper No.

Synthesis of Subsonic Airplane ..

The emergency lighting system must include-
(1) Illuminated emergency exit marking and locating signs, sources of general cabin illumination, interior lighting in emergency exit areas, and floor proximity escape path marking.
(2) Exterior emergency lighting.
(b) Emergency exit signs -
(1) For aeroplanes that have a passenger seating configuration, excluding pilot seats, of 10 seats or more must meet the following requirements:
(i) Each passenger emergency exit locator sign required by JAR 25.811 (d) (1) and each passenger emergency exit marking sign required by JAR 25.811(d) (2) must have red letters at least 1·5 inches high on an illuminated white background, and must have an area of at least 21 square inches excluding the letters.

Bil, "ADAS: A Design System for Aircraft Configuration Development," AIAA Paper No.

In addition to the powerplant instruments required by sub-paragraph (a) of this paragraph, the following powerplant instruments are required:
(1) A gas temperature indicator for each engine.
(2) A fuel flowmeter indicator for each engine.
(3) A tachometer (to indicate the speed of the rotors with established limiting speeds) for each engine.
(4) A means to indicate, to the flight crew, the operation of each engine starter that can be operated continuously but that is neither designed for continuous operation nor designed to prevent hazard if it failed.
(5) An indicator to indicate the functioning of the powerplant ice protection system for each engine; this applies only to a system which is selectable or contains some means of regulation.
(6) Not required for JAR-25.
(7) Not required for JAR-25.
(8) An indicator or equivalent means to indicate the proper functioning of any heater used to prevent ice clogging of fuel system components.
(d) For turbo-jet engine-powered aeroplanes.


Aircraft Sizing/Multidisciplinary Design ..

(c) VMC may not exceed 1·2 VS with -
(1) Maximum available take-off power or thrust on the engines;
(2) The most unfavourable centre of gravity;
(3) The aeroplane trimmed for take-off;
(4) The maximum sea-level take-off weight (or any lesser weight necessary to show VMC);
See Orange Paper Amendment 96/1
(5) The aeroplane in the most critical take-off configuration existing along the flight path after the aeroplane becomes airborne, except with the landing gear retracted; and
(6) The aeroplane airborne and the ground effect negligible; and
(7) If applicable, the propeller of the inoperative engine -
(i) Windmilling;
(ii) In the most probable position for the specific design of the propeller control; or
(iii) Feathered, if the aeroplane has an automatic feathering device acceptable for showing compliance with the climb requirements of JAR 25.121.
(d) The rudder forces required to maintain control at VMC may not exceed 150 pounds nor may it be necessary to reduce power or thrust of the operative engines.

Genetic Algorithms and Evolutionary Computation

The aeroplane must maintain longitudinal trim during -
(1) A climb with maximum continuous power at a speed not more than 1·4 VS1, with the landing gear retracted, and the wing-flaps (i) retracted and (ii) in the take-off position;
(2) Either a glide with power off at a speed not more than 1·4 VS1, or an approach within the normal range of approach speeds appropriate to the weight and configuration with power settings corresponding to a 3º glidepath, whichever is the most severe, with the landing gear extended, the wing-flaps (i) retracted and (ii) extended, the most unfavourable centre of gravity position approved for landing with the maximum landing weight, and the most unfavourable centre of gravity position approved for landing regardless of weight; and
(3) Level flight at any speed from 1·4 VS1, to VMO/MMO, with the landing gear and wing-flaps retracted, and from 1·4 VS1 to VLE with the landing gear extended.
(d) Longitudinal, directional, and lateral trim.

Full text of "NEW" - Internet Archive

Aeroplanes with four or more engines must be able to make 20º banked turns, with and against the inoperative engines, from steady flight at a speed equal to 1·4 VS1, with maximum continuous power, and with the aeroplane in the configuration prescribed by sub-paragraph (b) of this paragraph.
(e) Lateral control; all engines operating.