science

Slingsby Hengist

Slingsby Hengist is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Slingsby Hengist rather than just read about it. In short: The Slingsby Hengist was a British military glider designed and built by Slingsby Sailplanes Ltd. Like other British troop carrying gliders in the Second World War, it was named after military figures whose name began with H, in this case the Jute invader Hengist.

Key takeaways

Slingsby Hengist belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Slingsby Hengist to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Slingsby Hengist from memory before moving on to harder problems.

Reference excerpt

The Slingsby Hengist was a British military glider designed and built by Slingsby Sailplanes Ltd. Like other British troop carrying gliders in the Second World War, it was named after military figures whose name began with H, in this case the Jute invader Hengist.

Design and development The use of assault gliders by the British was prompted by the use by Germany of the DFS 230 transport glider, which was first used in May 1940 to land assault troops on the Eben Emael fort in Belgium. Their advantage compared to parachute assault was that the troops landed in one place, rather than being dispersed. The Slingsby T.18 Hengist was designed by John "Jack" Frost. It was a 15-seat glider designed to meet Specification X.25/40 (in accordance to O.R.98), issued in February 1941. The specification was issued in case sufficiently powerful tugs were not available for the larger Airspeed Horsa. Four prototypes were ordered in late 1940, the first prototype DG570 flying in January 1942, towed by an Armstrong Whitworth Whitley. A total of 14 production Hengist Mk I were delivered to the Royal Air Force (RAF) between February 1943 and March 1944. One of Frost's unique design touches was to fit the Hengist with a rubber bag as a landing device. A strengthened undercarriage was used on the production aircraft and was called the Mk III, but this name was not carried over to the RAF. The Hengist had a distinctive appearance with curved upper and lower surfaces and a flat sided fuselage.

Operational history Two Hengist Mk Is were delivered to the Glider Pilots' Exercise Unit while others were issued to experimental units or remained in storage. Production was halted when Waco Hadrian gliders became available under Lend-Lease. As a back-up type, it saw no operational service and was phased out of service in 1946.

Specifications (Hengist Mk I) Data from Slingsby Sailplanes, British Gliders and Sailplanes 1922–1970General characteristics Crew: 1 Capacity: 14 Length: 56 ft 6 in (17.22 m) Wingspan: 80 ft 0 in (24.38 m) Wing area: 780.0 sq ft (72.46 m2) Aspect ratio: 8.2 Airfoil: NACA 2415 (root), NACA 4412 (tip) Empty weight: 4,630 lb (2,100 kg) Gross weight: 8,351 lb (3,788 kg) Performance

Stall speed: 48 mph (77 km/h, 42 kn) Towing speed: 130 mph (209 km/h) Lift-to-drag: 14:1 Wing loading: 10.7 lb/sq ft (52.3 kg/m2)

Illustrations

Worked examples

Example 1 — a first encounter with Slingsby Hengist

Start with the simplest possible case. Write down what Slingsby Hengist claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Slingsby Hengist before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Slingsby Hengist ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Slingsby Hengist

In research: Slingsby Hengist appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Slingsby Hengist in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Slingsby Hengist is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1940s British military gliders, Aircraft first flown in 1942, Glider aircraft, so understanding it makes those chapters shorter.
In everyday life: Look for Slingsby Hengist outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Slingsby Hengist in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Slingsby Hengist means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Slingsby Hengist out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Slingsby Hengist in simple terms?

Why does Slingsby Hengist matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Slingsby Hengist?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Slingsby Hengist.