In the spring of 1937, take‐off tests down slopes of various gradients were carried out by the Flug‐technisch Institut. The gradients reached up to 35 deg. The experimental results are compared with calculation. The efficiency of this method of take‐off, together with its advantages and disadvantages, is investigated.
Isermann, R. and Beck, E. (1941), "Gradient‐Assisted Take‐Off: Calculations on the Advantages to be Gained from Taking‐off Down a Slope", Aircraft Engineering and Aerospace Technology, Vol. 13 No. 3, pp. 68-75. https://doi.org/10.1108/eb030749
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