Glider / Sailplane

FAA approach category A Typical Vref 45 to 55 kt 8 aircraft

Target for descent rate

Up to 100fpm

Full marks for descent rate up to 100 fpm, and no note for a soft touchdown: a feather-light arrival is the right technique here.

Scoring thresholds.

Roundout applies these to every aircraft in this category, except where an aircraft carries its own G-force curve or tail-strike limit. Scores fall in a straight line between the points, from 0 to 100 for each part; the composite formula is in the scoring methodology.

Descent rate at touchdown (fpm)The score at each point of the curve.

100≤ 100fpm

90≤ 156fpm

75≤ 239fpm

55≤ 350fpm

35≤ 461fpm

10≤ 600fpm

G-force at touchdown (g)The category's own curve.

100≤ 1.10g

90≤ 1.18g

75≤ 1.29g

55≤ 1.45g

35≤ 1.61g

10≤ 1.80g

Ideal touchdown zone: 50 to 200mpast the threshold
Tail-strike limit: 14°pitch at touchdown
Approach-speed tolerance: ±10%of Vref, at least 10 kt

The 8 aircraft in it.

Every one of them is held to the target above. What sets them apart is their own Vref, quoted at the reference weight, usually the maximum landing weight; Roundout adjusts it to the weight you land at.

Vref across the category49 kt in the Schleicher ASK 21 to 59 kt in the Stemme S12G; the middle aircraft, 52 kt.

Schleicher ASK 2149 kt Pipistrel Taurus M50 kt DG Aviation LS8-1851 kt DG Aviation DG-808S52 kt Schempp-Hirth Discus-2c52 kt DG Aviation DG-1001E neo54 kt Schleicher AS 33 Me54 kt Stemme S12G59 kt

Aircraft 8

Every figure, as a table

Aircraft	Vref	MTOW	Tail strike	Source
DG Aviation DG-1001E neo	54 kt	790 kg	14°	Default Std
DG Aviation DG-808S	52 kt	600 kg	14°	Payware (Touching Cloud)
DG Aviation LS8-18	51 kt	525 kg	14°	Default Std
Pipistrel Taurus M	50 kt	472 kg	14°	Default Premium
Schempp-Hirth Discus-2c	52 kt	565 kg	14°	Payware (Got Friends)
Schleicher AS 33 Me	54 kt	600 kg	14°	Payware (Got Friends)
Schleicher ASK 21	49 kt	600 kg	14°	Payware (F7 Simulations)
Stemme S12G	59 kt	900 kg	14°	Default Std

$23.99 once.

Every landing in these aircraft, graded against these numbers. Every update included, and tax or VAT in most countries.

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