Status of Development of Hotshot Tunnels at the Aedc

A Study of Laminar Heat Transfer to Spherically Blunted Cones and Hemisphere-Cylinders at Hypersonic Conditions

“…4) solutions, C::: 1.47 and qoo/P6::: 0.5436 for Moo-a:>. The final result is qw/ qo = 0.80 (C p + 2/ yM0 (2) for values of (x/d) e c 2 /# between 0.05 to 0.60. (6) The heat-transfer distribution over the hemisphere-cylinder was computed in a completely similar manner to the blunt cone calculations.…”

A Data Reduction Program for Hotshot Tunnels Based on the Fay-Riddell Heat-Transfer Rate Using Nitrogen at Stagnation Temperatures From 1500 to 5000 K

“…The enthalpynland the flow velocityul follow from Eqs. (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) and (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and the speed of sound from Eq. (1-19) (see Fig.…”

“…The quantity d>:' is the diameter of the throat in inches. If Tl 5 4009(, a 1 := 1.1055 (10)3 [_ 2.3537 (10)-2 + 6.4.129 (10 r 2 -IT: -1.2988 (10)-4 TIJ (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) Calculate .. ~';_it4i' tv "l!,(,!&~'\:,{'\' fV) .,h" * ,:J o~'';~4b,'"{;i/"'*' ?ad! ti",k''';OiW'~~~)4''';jW!IWal\"'' \:.hI ,l4'''''H)' "rl'tfW 'f (t' .1-&"&0;1/"'&4 ' > f ' ; " ' / '»h*fm:iW"'wrii\wiJjL l~f'iW.…”

“…As is described in Ref. 3, successive new designs of the arc chamber diminished the contamination and also reduced the differences between the measured and calculated values of the rates of heat transfer at the stagnation point. But as further new designs of the arc chamber reduced the contamination substantially, residual discrepancies remained between the measured and computed rates of heat transfer, which could no longer be ascribed to contamination.…”

Status of Research on Magnetohydrodynamic Augmentation of a Shock Tunnel

“…The limitations on the performance capabilities of hotshot tunnels are fairly well established (Ref. 2). Energy-density limitations of the arc chamber gas limit testsection velocities to about 10, 000 ft/sec.…”