A director of aeronautics shall be appointed by the commission, who shall serve for an indefinite term at the pleasure of the commission. The director shall be appointed with due regard to his or her fitness, by aeronautical education and by knowledge of and recent practical experience in aeronautics, for the efficient dispatch of the powers and duties vested in and imposed upon him by this article. The director shall devote his or her time to the duties of his or her office as required and prescribed by this article and shall not have any pecuniary interest in, or any stock in, or bonds of, any civil aeronautical enterprise. The director shall receive such compensation as the commission may determine, which said compensation shall, however, conform in general to the compensation received by persons occupying positions of similar importance and responsibility with other agencies of this state. The director shall be reimbursed for all traveling and other expenses incurred by him or her in the discharge of his or her official duties in accordance with state travel rules. The director shall be the executive officer of the commission and under its supervision shall administer the provisions of this article and the rules and orders established thereunder and all other laws of the state relative to aeronautics. The director shall attend, but not vote, at all meetings of the commission. The director shall act as secretary of the commission and shall be in charge of its offices and responsible to the commission for the preparation of reports and the collection and dissemination of data and other public information relating to aeronautics. At the direction of the commission the director shall, together with the chairman of the commission, execute all contracts entered into by the commission which are legally authorized and for which funds are provided in any appropriations act. The commission may, by written order filed in its office, delegate to the director any of the powers or duties vested or imposed upon it by this article. Such delegated powers and duties may be exercised by such director in the name of the commission. The commission may also employ such administrative, engineering, technical and clerical assistance as may be required. The director and such other assistants may, under the supervision of the commission, insofar as is reasonably possible, make available the engineering and other technical services of the commission, without charge to any municipality, and with or without charge to any other person desiring them, in connection with the construction, maintenance or operation, or proposed construction, maintenance or operation of any airport.