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This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources List of X 4 flights news newspapers books scholar JSTOR May 2016 Learn how and when to remove this message X 4 pilots editPilot Agency Flights Aircraft A Boyd USAF 1 46 677 Frank Everest USAF 4 46 677 R L Johnson USAF 1 46 677 J S Nash USAF 1 46 677 Chuck Yeager USAF 7 46 677 S P Butchart NACA 4 46 677 George Cooper NACA 1 46 677 Scott Crossfield NACA 29 46 677 John Griffith NACA 7 46 677 W P Jones NACA 14 46 677 John McKay NACA 1 46 677 Joseph Walker NACA 1 46 677 Charles Tucker Northrop 31 46 676 46 677X 4 flights editVehicleFlight Date Pilot Aircraft Agency Velocity Mach Altitude m Comments X 4 1 August 18 1950 Chuck Yeager 46 677 USAF 1 Air Force flight Pilot familiarization X 4 2 August 22 1950 Frank Everest 46 677 USAF 2 Air Force flight Pilot familiarization X 4 3 August 22 1950 Frank Everest 46 677 USAF 3 Aborted landing gear malfunction X 4 4 August 30 1950 Frank Everest 46 677 USAF 4 Handling qualities X 4 5 August 31 1950 Frank Everest 46 677 USAF 5 Same as flight 4 X 4 6 September 8 1950 Chuck Yeager 46 677 USAF 6 Longitudinal and latitudinal stability and control X 4 7 September 1950 Chuck Yeager 46 677 USAF 7 Aborted faulty canopy lock X 4 8 September 1950 Chuck Yeager 46 677 USAF 8 Longitudinal and latitudinal dynamic stability and control X 4 9 September 1950 Chuck Yeager 46 677 USAF 9 Same as flight 8 X 4 10 September 1950 Chuck Yeager 46 677 USAF 10 Same as flight 8 X 4 11 September 1950 Chuck Yeager 46 677 USAF 11 Same as flight 8 X 4 12 September 22 1950 46 677 USAF 12 Air Force flight Pilot familiarization X 4 13 September November 1950 A Boyd 46 677 USAF 13 Air Force flight Pilot famiiliarization X 4 14 September November 1950 J S Nash 46 677 USAF 14 Air Force flight Pilot famiiliarization Airspeed calibration X 4 15 September November 1950 John Griffith 46 677 NACA 1 First NACA pilot checkflight X 4 16 September November 1950 John Griffith 46 677 NACA 2 Longitudinal latitudinal directional stability and control X 4 17 September November 1950 John Griffith 46 677 NACA 3 Same as flight 16 X 4 18 September November 1950 John Griffith 46 677 NACA 4 Same as flight 16 X 4 19 September November 1950 John Griffith 46 677 NACA 5 Same as flight 16 X 4 20 November 7 1950 John Griffith 46 677 NACA 6 Same as flight 16 X 4 21 November 17 1950 John Griffith 46 677 NACA 7 Same as flight 16 X 4 22 December 6 1950 R L Johnson 46 677 USAF 15 Air Force flight Pilot famiiliarization X 4 23 December 6 1950 Scott Crossfield 46 677 NACA 8 NACA pilot checkflight Aborted X 4 24 December 15 1950 Scott Crossfield 46 677 NACA 9 Aborted instrument malfunction X 4 25 December 28 1950 Scott Crossfield 46 677 NACA 10 Longitudinal latitudinal directional stability and control X 4 26 January 4 1951 Scott Crossfield 46 677 NACA 11 Same as flight 25 X 4 27 January 17 1951 Scott Crossfield 46 677 NACA 12 Same as flight 25 X 4 28 January 19 1951 Scott Crossfield 46 677 NACA 13 Aborted landing gear malfunction X 4 29 January 24 1951 Scott Crossfield 46 677 NACA 14 Aborted instrument malfunction X 4 30 January 26 1951 Scott Crossfield 46 677 NACA 15 Longitudinal latitudinal directional stability and control X 4 31 February 19 1951 Scott Crossfield 46 677 NACA 16 Same as flight 30 X 4 32 March 19 1951 Scott Crossfield 46 677 NACA 17 Same as flight 30 X 4 33 March 26 1951 Scott Crossfield 46 677 NACA 18 Same as flight 30 X 4 34 March 28 1951 Scott Crossfield 46 677 NACA 19 Same as flight 30 X 4 35 April 12 1951 Scott Crossfield 46 677 NACA 20 Same as flight 30 X 4 36 April 13 1951 Scott Crossfield 46 677 NACA 21 Same as flight 30 X 4 37 April 17 1951 Scott Crossfield 46 677 NACA 22 Same as flight 30 X 4 38 April 20 1951 W P Jones 46 677 NACA 23 NACA pilot check X 4 39 April 26 1951 Scott Crossfield 46 677 NACA 24 Longitudinal latitudinal directional stability and control X 4 40 April 27 1951 W P Jones 46 677 NACA 25 Same as flight 39 X 4 41 May 3 1951 W P Jones 46 677 NACA 26 Same as flight 39 X 4 42 May 9 1951 Scott Crossfield 46 677 NACA 27 Same as flight 39 X 4 43 May 16 1951 Scott Crossfield 46 677 NACA 28 Same as flight 39 X 4 44 May 18 1951 Scott Crossfield 46 677 NACA 29 Same as flight 39 X 4 45 May 29 1951 Scott Crossfield 46 677 NACA 30 Same as flight 39 X 4 46 August 20 1951 W P Jones 46 677 NACA 31 First flight with thick trailing edge on speed brakes X 4 47 October 2 1951 Scott Crossfield 46 677 NACA 32 Stability and control with thick trailing edge X 4 48 October 5 1951 Scott Crossfield 46 677 NACA 33 Lift to drag variation using various speedbrake settings X 4 49 October 9 1951 Scott Crossfield 46 677 NACA 34 Landings at various lift to drag ratios X 4 50 October 11 1951 Scott Crossfield 46 677 NACA 35 Same as flight 49 X 4 51 October 12 1951 W P Jones 46 677 NACA 36 Same as flight 49 X 4 52 October 17 1951 W P Jones 46 677 NACA 37 Constant speed drag ratios X 4 53 October 18 1951 Joseph Walker 46 677 NACA 38 NACA pilot check handling qualities X 4 54 October 19 1951 Joseph Walker 46 677 NACA 39 Maneuvers and speed runs X 4 55 October 24 1951 W P Jones 46 677 NACA 40 General stability and control X 4 56 March 6 1952 W P Jones 46 677 NACA 41 Lift to drag at various speedbrake settings X 4 57 March 13 1952 W P Jones 46 677 NACA 42 Directional trim change invest X 4 58 March 17 1952 W P Jones 46 677 NACA 43 Lift to drag variation with speedbrakes X 4 59 March 21 1952 W P Jones 46 677 NACA 44 Lift to drag variation studies X 4 60 March 25 1952 W P Jones 46 677 NACA 45 Dynamic stability invest X 4 61 March 26 1952 W P Jones 46 677 NACA 46 Same as flight 60 X 4 62 March 27 1952 S P Butchart 46 677 NACA 47 NACA pilot check X 4 63 May 19 1952 W P Jones 46 677 NACA 48 Check flight with thickened trailing edge on elevons X 4 64 August 6 1952 Scott Crossfield 46 677 NACA 49 Stability and control with thickened elevons X 4 65 August 11 1952 46 677 NACA 50 Aborted engine malfunction X 4 66 September 16 1952 46 677 NACA 51 Aborted instrument malfunction X 4 67 September 22 1952 46 677 NACA 52 X 4 68 September 23 1952 Scott Crossfield 46 677 NACA 53 Stability and control with thickened elevons X 4 69 March 27 1953 Scott Crossfield 46 677 NACA 54 Same as flight 68 X 4 70 April 29 1954 Scott Crossfield 46 677 NACA 55 Airspeed calibration with thickened elevons X 4 71 April 30 1954 Scott Crossfield 46 677 NACA 56 High lift stability and control X 4 72 May 20 1954 S P Butchart 46 677 NACA 57 Dynamic stability without thickened elevons X 4 73 July 1 1954 S P Butchart 46 677 NACA 58 Same as flight 72 X 4 74 July 3 1954 S P Butchart 46 677 NACA 59 Same as flight 72 X 4 75 July 3 August 1954 George Cooper 46 677 NACA 60 NACA pilot check for Ames pilot X 4 76 August 11 1954 John McKay 46 677 NACA 61 NACA pilot check X 4 77 August 1954 46 677 NACA 62 Dynamic Stability X 4 78 August 1954 46 677 NACA 63 Dynamic Stability X 4 79 August 31 1954 46 677 NACA 64 NACA pilot check X 4 80 September 1954 46 677 NACA 65 NACA pilot check X 4 81 September 1954 46 677 NACA 66 NACA pilot check X 4 82 September 1954 46 677 NACA 67 Aileron pulses low speed turns with dive brakes See also editX 4 Bantam Chuck Yeager Scott Crossfield John McKay Joseph Walker Retrieved from https en wikipedia org w index php title List of X 4 flights amp oldid 1168350655, wikipedia, wiki, book, books, library,
