science

SCAL FB.30

SCAL FB.30 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 SCAL FB.30 rather than just read about it. In short: The SCAL FB.30 was a French twin boom, pusher configuration, two seat civil sport and touring aircraft designed by Antoine Bassou in the mid-1930s. Three, with different engines, were built and flown.

Key takeaways

SCAL FB.30 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SCAL FB.30 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SCAL FB.30 from memory before moving on to harder problems.

Reference excerpt

The SCAL FB.30 was a French twin boom, pusher configuration, two seat civil sport and touring aircraft designed by Antoine Bassou in the mid-1930s. Three, with different engines, were built and flown.

Design and development The SCAL FB.30 was a two seat monoplane with a two beam fuselage, a forward pod containing the cockpits and a low power engine at the rear. Antoine Bassou had produced several earlier two beam designs but these were tractor aircraft with the pod mounted well below the wing and the engine on the wing. In contrast, the FB.30's wing was set low on the pod. It was a wooden aircraft with a three-part wing built around a single box spar. The short, rectangular plan central section carried the pod and the booms were attached to its undersides. The outer panels were tapered in plan out to semi-elliptical tips. The wing was plywood covered ahead of the spar and fabric-covered behind. Slotted ailerons filled almost all the outer panels' trailing edges and could be used as camber-changing flaps. The pod was flat-sided, with the engine at the rear. The first FB.30 was powered by a 32 hp (24 kW), flat four Mengin and the second by a larger displacement, 40 hp (30 kW), Mengin G.H.M. The FB.31 had a 45 hp (34 kW), nine cylinder Salmson 9AD radial engine. There were two open cockpits, the passenger's over the centre of the wing and the pilot's well ahead of the leading edge. The FB.30, unusually for its time, had a fixed tricycle undercarriage. The nose-wheel was mounted to the pod but the mainwheels were enclosed within the forward, V-section booms. Behind the wing trailing edge the booms became rectangular in section and at their ends extended upwards to carry the tailplane, with the fin was mounted on it but rigidly braced back to the booms by parallel struts. The rear control surfaces were straight-edged and unbalanced.

Operational history Only three airframes were built, no.1 with the smaller Mengin, no.2 with the Mengin GHM and no.3, the sole Salmson-powered FB.31. Dates of first flights of the FB.30s are uncertain though no.2 was built in 1935. The FB.31 first flew on 2 November 1936 and was certified in September 1937. FB.30 no.2 was exported to the UK in June 1937 and registered there in October. Its time in the UK was short as it was lost in a fatal crash in June 1938. The FB.31 flew again after World War II, registered as F-PFOL in late 1953, and participated in a 1954 air rally at Alencon from its base at Lyon. It was de-registered in 1977.

Variants FB.30 32–40 hp (24–30 kW) Mengin flat twin engines. Two built. FB 31 45 hp (34 kW) nine cylinder Salmson 9AD radial engine. One built.

Specifications (FB.30 no.1, 32 hp Mengin) Data from L'Aeronautique November 1936General characteristics Crew: one Capacity: one passenger Length: 6 m (19 ft 8 in) Wingspan: 9.25 m (30 ft 4 in) Height: 1.55 m (5 ft 1 in) Wing area: 12 m2 (130 sq ft) Empty weight: 260 kg (573 lb) Gross weight: 500 kg (1,102 lb) Powerplant: 1 × Mengin flat twin, 24 kW (32 hp) Propellers: 2-bladed pusher Performance

Maximum speed: 175 km/h (109 mph, 94 kn) Cruise speed: 135 km/h (84 mph, 73 kn) Minimum speed: 70 km/h (43 mph) Landing speed: 50 km/h (31 mph) Range: 1,000 km (620 mi, 540 nmi) Service ceiling: 4,800 m (15,700 ft) calculated

References

Worked examples

Example 1 — a first encounter with SCAL FB.30

Start with the simplest possible case. Write down what SCAL FB.30 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 SCAL FB.30 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 SCAL FB.30 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 SCAL FB.30

In research: SCAL FB.30 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 SCAL FB.30 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: SCAL FB.30 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1930s French sport aircraft, Single-engined pusher aircraft, Twin-boom aircraft, so understanding it makes those chapters shorter.
In everyday life: Look for SCAL FB.30 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 SCAL FB.30 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SCAL FB.30 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 SCAL FB.30 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SCAL FB.30 in simple terms?

Why does SCAL FB.30 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 SCAL FB.30?

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 SCAL FB.30.