TM
75053
ML155A
mating the height of clouds up to 30,000 feet at night.
The ML155A may be used when there are very thin
cirrus clouds or when a haze partially covers the sky.
Windspeed and wind direction may be computed by
tracking the balloon visually and computing the angular
data received.
6. TECHNICAL CHARACTERISTICS:
Type _ _ _ _ _ _ _ _ _ _ _ _ Pilot.
Material _ _ _ _ _ _ _ _ _ _ _ Neoprene.
Color _ _ _ _ _ _ _ _ _ _ _ Orange.
Weight (inflated) _ _ _ _ _ 30 g.
Free lift _ _ _ _ _ _ _ _ _ 132 g.
Average rate of rise _ _ _ _ _ 600 fpm/183 meters per
min.
Bursting altitude _ _ _ _ 30,000 ft/9144 meters.
Dimensions (neck) _ _ _ 1 7/8in. long, 9/16-in dia.
Volume _ _ _ _ __ __ _ 0.003 cu ft.
7. MAJOR COMPONENT:
`Balloon ML155A.
8. SET, SYSTEM, FACILITY, AND CONFIGURATION
APPLICATIONS:
This equipment is used in a meteorological system.
9. ADDITIONAL EQUIPMENT REQUIRED AND AUX-
ILIARY EQUIPMENT: None.
10. TOOLS AND TEST EQUIPMENT: None.
11. REFERENCE DATA AND LITERATURE :
TM 11666022212 _ _ _ _ _ ML-155A
12. REPAIR PARTS SUPPORT CAPABILITY :
Figure 42.30-Gram Pilot Balloon ML155A.
No density.
13. TRAINING REQUIREMENTS:
1. NOMENCLATURE: Balloon ML155A.
Operator MOS 93E20, 93F20.
2. TYPE CLASSIFICATION: Standard A.
14. TYPICAL BASIS OF ISSUE.
3. SECURITY REQUIREMENTS: Unclassified.
15. PRICE DATA:
4. PRIMARY USE OR CONCEPT OF EMPLOYMENT:
a. Maior item _ _ _ _ _ _ _ _ _ _ __ _ _
||content||
.25Used to determine the direction and speed of winds
b. Repair parts (1-year cost based Expendable item,
aloft.
nonrepairable.
on 100 equipments).
5. BRIEF FUNCTIONAL DESCRIPTION:
16. ITEM REPLACED: None.
Balloon ML155A, a small orange pilot balloon, assists
17. REMARKS:
in the determination of wind direction and windspeed aloft
Issued as a unit replacement.
using Theodolite ML247( ) or ML474/6M and
99
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