Jif Paines | 10 Percent True | EP82Chapters
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In this episode, former RAF Harrier pilot and X-35B test pilot “Jif” Paines explains how the F-35B’s revolutionary STOVL flight control system was born.
From early Harrier night attack operations to experimental fly-by-wire research on the VAAC Harrier, Jif traces the technical and philosophical battle that led to Unified Flight Control — the system that made the F-35B dramatically easier to fly.
Along the way he discusses:
• Auto-eject systems and pilot safety philosophy
• The lift-fan mechanics behind the F-35B’s STOVL capability
• The X-35 concept demonstrations and engineering decisions behind them
• Why automation can “de-skill” pilots — and why that may be necessary
• How test pilots and engineers negotiate control authority
• And why automation forces a fundamental rethink of the human role in combat aviation
This conversation provides rare insight into test pilot culture, engineering decision-making, and the future of autonomous airpower.
0:00 “A stupid question?”
1:15 Welcome Jif
1:38 Auto-eject subscriber question (Sedlo)
4:24 Thanks to Super for the introduction
4:48 Jif’s introduction
11:40 Transferring TPS knowledge and skills to testing in the X-35
14:00 What decisions had been made before joining the program?
17:12 VAAC Harrier control laws and pilot resistance to the concepts being developed
20:15 Unified Flight Control explained
25:15 Engineering the “feel” for the pilot — reversion and safety features, de-skilling
31:10 “A stupid question?”
32:16 Integration of the control laws into the X-35
34:19 Lift-fan dynamics and operating process
37:00 Differences between flying the VAAC Harrier and the F-35
38:10 STOVL initially implemented in Harrier style — why?
40:22 Flying characteristics and aircraft feel
43:16 Exciting?
44:40 Transferring expertise to the X and F variants and defending Unified Flight Control
49:40 The Farley climb
53:50 The future of the pilot in military aviation
57:30 Thanks Jif (please return!)