PUBLIC LAWS-CHS. 764, 766-OCT. 27, 1949 Limitation. purposes of this Act; and with respect to projects within and without continental United States, the approximate partial cost for each project enumerated and authorized in section 1 of this Act may, in the discre- tion of the Secretary of the Army, be varied upward 10 per centum, but the total cost of the work on the projects authorized by this Act prvaiailit of ap- shall not exceed $7,663,212. Any such appropriation shall be available under the direction of the Secretary of the Army for expenses incident to construction, including administration, overhead, planning, and Prosecutionofwork. surveys, and shall be available until expended: Provided, That any work undertaken under this authorization may be prosecuted by direct appropriations, or by both direct appropriations and continuing contracts subject to the availability of subsequent appropriations: Family quarters Provided further, That construction of family quarters under this authorization shall be subject to the terms and conditions set forth in the last six provisos of section 3 of the Act of June 12, 1948 (Public i 626s-10 U.'. C., Law 626; 62 Stat. 379-380). 3upp. I, § 1337b. SEC. 3 . To accomplish the above-authorized construction the Secre- Acquisitionoflands, etc. tary of the Army is authorized to acquire lands and rights pertaining thereto, or other interest therein, including the temporary use thereof, by donation, purchase, exchange of Government-owned lands, or other- 31U.s.c.§52. wise, without regard to section 3648, Revised Statutes, as amended. Approved October 27, 1949. [CHAPTER 766] October 27, 1949 [S. 1267] [Public Law 415] Unitary Wind Tun- nel Plan Act of 1949, and Air Engineering Development Center Act of 1949. AN ACT To promote the national defense by authorizing a unitary plan for construction of transsonic and supersonic wind-tunnel facilities and the establishment of an Air Engineering Development Center. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, TITLE I nel Plan Act f 1949 SEC. 101. The National Advisory Committee for Aeronautics (here- inafter referred to as the "Committee") and the Secretary of Defense are hereby authorized and directed jointly to develop a unitary plan for the construction of transsonic and supersonic wind-tunnel facili- ties for the solution of research, development, and evaluation problems in aeronautics, including the construction of facilities at educational institutions within the continental limits of the United States for training and research in aeronautics, and to revise the uncompleted portions of the unitary plan from time to time to accord with changes in national defense requirements and scientific and technical advances. The Committee and the Secretaries of the Army, the Navy, and the Air Force are authorized to proceed with the construction and equipment of facilities in implementation of the unitary plan to the extent per- mitted by appropriations pursuant to existing authority and the Post,p .937. authority contained in titles I and II of this Act. Any further implementation of the unitary plan shall be subject to such additional authorizations as may be approved by Congress. eqnstuctin autor- SEO . 102. The Committee is hereby authorized, in implementa- ized. tion of the unitary plan, to construct and equip transsonic or super- sonic wind tunnels of a size, design and character adequate for the efficient conduct of experimental work in support of long-range funda- mental research at educational institutions within the continental Cost limitation. United States, to be selected by the Committee, or to enter into con- tracts with such institutions to provide for such construction and Title tofacilities. equipment, at a total cost not to exceed $10,000,000: Provided, That the Committee may, in its discretion, after consultation with the P e II 936 [63 STAT.