Glass wing H-101

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H-101 somersault
H101 Salto Winningen-Koblenz.jpg
H101 somersault
Type: Single seat glider (normal flight / aerobatics)
Design country:

Germany Federal RepublicFederal Republic of Germany BR Germany

Manufacturer:
  • Start & Flug GmbH Saulgau
  • LTB Frank & Waldenberger
First flight:

March 6, 1970

Production time:

1970-1977 and 1993-1996

Number of pieces:

72

H-101 somersault

The H-101 Salto is a glider . It was designed by Ursula Hänle , the then wife of the creator of the glass wing aircraft, Eugen Hänle . The first flight was on March 6, 1970. The H-101 Salto was mainly built for glider aerobatics , but is also suitable for cross-country flights due to its comparatively good glide ratio.

Development history

The development of the Salto goes back to 1948 and an aircraft design by Wolfgang and Ulrich Hütter , who were responsible for the development of the famous Minimoa at Wolf Hirth . The basis of the Salto development is the Hütter H 30 , which has very clear visual similarities to the Salto or the H-301 Libelle. The goal of the Hütter brothers when developing the H-30 was to produce a particularly light glider made of wood. However, due to strength problems , this plan had to be discarded. Only a cooperation between Ulrich Hütter and Eugen Hänle seemed to bring the project to a realization. Since the two of them had joint experience in dealing with GRP , they wanted to incorporate this into glider construction. The H-30 was then in GRP Balsa - sandwich redesigned and then produced in the first six years of marriage by Ursula and Eugene Hänle first in kitchen and hallway of one's home and later in a workshop. Parallel to the production and development of the H-30, Hütter and Hänle set up the company Glasflügel. From experience with the H-30, aircraft such as the H-201 Libelle and later also the Salto emerged, with this showing the clearest similarities with the H-30. From 1970, Ursula Hänle and Wolfgang Hütter built the Salto in series in their new company “Start + Flug GmbH Saulgau” until 1977, producing 67 copies. Another five were manufactured by LTB Frank & Waldenberger between 1993 and 1996, making the total production 72 copies. In 2007 Ursula Hänle handed over the model support to the Salto service team.

technology

H-101 Salto with a special hood opening mechanism (sliding hood), serial number 18, built in 1972

Initially, the Salto with a wingspan of just 13.6 m was developed and built mainly for aerobatics. For this purpose, the wings of the "standard dragonfly" were shortened in the area of ​​the wing root and used in a somersault. In order to meet the special requirements of aerobatics, the Salto received an auxiliary spar and reinforced spar straps. In the construction, the usual overlapping spar stubs were dispensed with and the aircraft was equipped with a load-bearing spar box. The usual Schempp-Hirth brake flaps were replaced by trailing edge rotary brake flaps. These are particularly good-natured in their effect on the glider at high speeds, as can occur in aerobatics. The rate of descent caused by these flaps is, however, to be regarded as rather moderate, which is why the somersault was soon equipped with a braking parachute. Some aircraft were extended to a span of 15 m or 15.5 m with the help of clip-on wings, which significantly improves the glide performance of the somersault (~ 1: 37 instead of 1:34). This means that the somersault can still be used today in the club class as a competition aircraft.

particularities

Somersault on landing with the braking parachute partially unfolded and the trailing edge flaps extended
  • The Salto has a V-tail , which makes the aircraft immediately noticeable among other gliders.
  • The aircraft is equipped with automatic rudder connections as standard, which was by no means a matter of course in 1970.
  • The trailing edge rotary brake flaps are also noticeable, as they also differ from the two-tier Schempp-Hirth brake flaps that are common today. Since these trailing edge flaps only cause a moderate sinking during the approach, the designer Ursula Hänle provided the somersault with a braking parachute .
  • The elaborately shaped canopy is also striking, giving the pilot excellent all-round visibility.
  • Since the mold construction is the most complex and expensive part of composite fiber aircraft construction, Ms. Hänle used a trick here as well: The opposite shells of the tail unit (left-bottom / right-top and vice versa) were each made in the same shape. With a non-load-bearing V-tail, this makes aerodynamic sense and is cost-efficient.
  • The supporting spar box allows each wing to be mounted individually and as soon as a wing is mounted, the aircraft can be placed on it. This fact repeatedly causes confusion in glider pilot circles, as this is hardly possible with any other aircraft. Other gliders would be damaged by such a procedure during assembly.
  • According to the registration certificate of the Federal Aviation Office, the manufacturer of the aircraft is the company "Start + Flug, Saulgau", but the reader of the flight and operating manual is welcomed as part of the community of the "glass winged". (Quote: "We are happy to welcome you to the community of glass winged people and wish you and us that your expectations are fully met.") This indicates that the aircraft belongs to the aircraft family of Glasflügel Segelflugzeugbau GmbH.

Technical specifications

Parameter Data
length 5.95 m
span 13.6 m (15 m; 15.5 m)
Wing area 8.58 m² (9.14 m²)
profile Wortmann FX 66-17 All-182
Empty mass (acro) 182 kg
Max. Takeoff mass (acro) 280 kg
Wing loading 32.6 kg / m 2
Glide ratio 34 (≈37) at 90 km / h
Slightest sinking 0.6 m / s at 68 km / h and 240 kg takeoff weight
Maximum speed v NE 280 km / h (250 km / h)
Maneuver speed v A 160 km / h
Minimum speed v S 67 km / h with a takeoff weight of 240 kg
Load factor + 7.0 / −5.0 g

literature

  • Flight and operating manual for the glider type H 101 Salto. Issued December 1972 Rev. 1993.
  • Martin Simons: Gliders 1945–1965. EQUIP Verlag, ISBN 3-9807977-3-2 .
  • Jürgen Gaßebner: The most beautiful vintage gliders. 1st edition, Motorbuchverlag, 2002, ISBN 3-613-02195-1 .
  • Test: H 101 somersault. Flug-Revue, January 1975

Web links

Commons : H101 Salto  - Collection of images, videos and audio files

Individual evidence

  1. ↑ SPECIFIC AIRWORTHINESS SPECIFICATION for H 101 “Salto” (PDF; 27 kB)
  2. ↑ Frank & Waldenberger's company history at www.frankundwaldenberger.de (as of January 5, 2010)
  3. ↑ Model maintenance Model maintenance of the Salto H101