Powerplant limitations.

CFR · 2024-01-01 · US · Title 14

(a) (b) (1) The maximum rotational speed, which may not be greater than— (i) The maximum value determined by the rotor design; or (ii) The maximum value shown during the type tests; (2) The maximum allowable manifold pressure (for reciprocating engines); (3) The time limit for the use of the power corresponding to the limitations established in paragraphs (b)(1) and (2) of this section; (4) If the time limit in paragraph (b)(3) of this section exceeds two minutes, the maximum allowable cylinder head, coolant outlet, or oil temperatures; (5) The gas temperature limits for turbine engines over the range of operating and atmospheric conditions for which certification is requested. (c) (1) The maximum rotational speed which may not be greater than— (i) The maximum value determined by the rotor design; or (ii) The maximum value shown during the type tests; (2) The minimum rotational speed shown under the rotor speed requirements in § 27.1509(c); and (3) The gas temperature limits for turbine engines over the range of operating and atmospheric conditions for which certification is requested. (d) (e) (1) A limit engine torque must be established if the maximum torque that the engine can exert is greater than— (i) The torque that the rotor drive system is designed to transmit; or (ii) The torque that the main rotor assembly is designed to withstand in showing compliance with § 27.547(e). (2) The limit engine torque established under paragraph (e)(1) of this section may not exceed eit

official document · source cfr-2024 · id 14:§ 27.1521