COMBAT AND COMPETITION.pdf - Lakes Gliding Club

COMBAT AND COMPETITION
CHAPTER TEN
1. Burway. An ancient access road to the Long Mynd - still unmetalled in
those days.
2. CV Panel. Clear Vision Panel.
3. Unimog. A Mercedes four wheel drive tractor with very large diameter
wheels. The Spaniards had short circuited the rear quarter elliptic
suspension with a tow bar assembly which was attached to the rear of the
chassis and the axle casing! Used for trailer towing and hired out to
competitors. The maximum speed seemed to be all of about 20 mph.
4. Diamond Badge. The three diamonds, added to the Gold C badge, are
awarded for:- a height gain of 5000 metres, a distance flight of 500
kilometres and a goal flight of 300 kilometres.
5. Vne. Literally speed never to be exceeded. Maximum diving speed in
smooth air.
CHAPTER ELEVEN
1. Reynolds Number. A fluid dynamics number which is proportional to
density, viscosity, size, and speed. Would be low for a glider.
2. D Box. Formed by the main spar and the 'wrap round' nose aerofoil
section forward of the spar.
3. Pilot Rake. A number of pilot heads, arranged in a comb or rake -
mounted adjacenl to an aerodynamic body to measure Ihe pattern of local
airflow velocilies.
4. N.A.C.A. Nalional Advisory Committee for Aeronautics. These were
N.A.C.A. designated aerofoil sections.
5. C.G. Centre of Gravily.
6. A.S.I. Air Speed Indicator.
7. Posilion Error Tesling. Accurate slalic pressures are needed for the flight
instruments. The error can be measured in a number of ways but gliders
are limited to the relatively cumbersome static 'bomb'. Two calibrated
A.S.I.s are used, sharing a common pilot, one connected to the aircraft
slalic and Ihe olher to the bomb which trails some distance below. Yards
of rubber tubing and cable fill the cockpil before Ihe bomb is launched!
8. Sailplane and Gliding - October 1959, p266.
CHAPTER TWELVE
1. W.A.T. Weighl Allilude Temperalure. Graphs and lables for calculation
of the maximum allowable take off weighl for any given combination of
altitude, temperature, runway length and obstacle clearance on the climb
out. A 'carpet plol' developed from Ihem was easier and quicker lo use.
2. Aulomalic Flighl Conlrol Systems. The two main reasons for Ihe
inlroduclion of these systems on combal aircraft were:
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