There is another special fund of the state, known as the “International Airports Revenue Bond Redemption Fund,” which is a trust fund for paying and securing the payment of the principal of and interest and redemption premium, if any, on the bonds and which shall be at all times completely segregated and set apart from all other funds of the state. The committee, on behalf of the state, shall obligate and bind the state to set aside and pay into the bond redemption fund any part or parts of, or all of, or a fixed proportion of, or a fixed amount of the money in the revenue fund sufficient to pay the principal of and interest and redemption premium, if any, on the bonds as the payments become due and, if it considers it necessary, to set aside and maintain reserves for this purpose. The bond redemption fund shall be drawn upon for the purpose of paying the principal of and interest and redemption premium, if any, on the bonds, and the bonds do not constitute a general obligation of the state.