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List of X-4 flights: Wikis

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X-4 pilots

Pilot 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 46-676/46-677

X-4 flights

Vehicle
Flight #
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 famiiliarization.
X-4 #2 August 22, 1950 Frank Everest 46-677 USAF 2  ?  ? Air Force flight. Pilot famiiliarization.
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 famiiliarization.
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

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